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Experimental and numerical study on configuration, shape, distance and angle of attack in film cooling implementing vortex generator Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-23 Nirmal Halder
The impact of vortex generator configuration, shape, angle of attack and distance between vortex generator and film cooling hole has been studied using both experimental and numerical methods for enhancing the gas turbine blade’s film cooling efficiency. Infrared (IR) thermography technique has been used for investigating the temperature field. In order to obtain the velocity field ANSYS FLUENT has
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Availability monitoring and improvement method for in-service nuclear power plants based on high-precision prediction of availability Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-20 Jinyuan Shi
A high-precision availability prediction, availability monitoring, and availability improvement method for in-service nuclear power plants has been proposed. The calculation formula for availability characteristic quantities and categories of planned maintenance for nuclear power plants are introduced. For nuclear power plants that have been in operation for less than 5 years, an availability prediction
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Analysis of unsteady flow and pressure pulsation of multistage centrifugal pump based on actual size Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-18 Baoling Cui, Yingbin Zhang, Yakun Huang, Zuchao Zhu
In this paper, the unsteady flow and pressure pulsation in 11-stage centrifugal pump were analyzed based on large eddy simulation. The performances from the numerical simulation agreed with the ones from the experiment. The numerical results show that large pressure gradient area appears on trailing edge of blade pressure surface, and large vorticity intensity area appears on blade suction surface
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Numerical study on the influence of inlet distortion on integrated nacelle fans based on coupling crosswind and angle of attack Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-17 Junyang Yu, Dingding Qin, Chongjia Guo, Peng Sun, Wenguang Fu
Crosswind and angle of attack are critical factors that influence the safe operation of civil aviation engines, which are also essential criteria in the certification of civil engine airworthiness. Conducting research on the effects and mechanisms of angle of attack and crosswind on the integrated characteristics and flow field of nacelle and fan holds significant engineering value. In this study,
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Implementation of heat transfer techniques for an axial flux permanent magnet generator design Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-17 Erol Kurt, Mustafa Demirci, Mustafa İlbaş
Heat transfer problem is explored for a new-designed low power generator. A self-cooling mechanism of the generator is designed and implemented for the forced convection via a fan being on the generator rotor. In addition, air is naturally directed towards the lateral parts of the machine in air gaps between stator and rotors. The designed fan has 16 blades with 65 degrees. The CFD and experimental
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Experimental study on combustion stability of a gas turbine model combustor under oxygen-lean conditions Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-08 Shunchuang Qin, Minwei Zhao, Zhihao Zhang, Hui Tang, Ningbo Zhao, Xiao Liu, Hongtao Zheng, Fuquan Deng
Flue gas recirculation has emerged as a promising low-NOx emission technology in advanced gas turbines, while the slower oxidation rate induced by the low oxygen content could potentially cause combustion instability. We conducted an experimental investigation in a single-nozzle swirl combustor to examine the impact of oxygen content, inlet flow rate as well as temperature on combustion instability
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A combined experimental and computational investigation of an inducer’s characteristics with gas-water two-phase flow Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-03 Jie Chen, Yong Wang, Houlin Liu, Lilin Lv, Yanhong Mao, Linglin Jiang
The objective of the paper is to investigate the internal flow characteristics inside the inducer under the gas-water condition using a combination of experiment and numerical simulations. Gas-water mixing is achieved by an annular gas mixing device and visualized by high-speed imaging technology. Meanwhile, the shear stress transport (SST) k- ω model coupled with the VOF model is applied to investigate
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Transient flow and thermodynamics analysis of a scroll compressor based on CFD Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-04-01 Ying-li Zhang, Xiang-ji Yue, Fan Yang, Jia-nan Ding, Jia-hua Hong, De-chun Ba
The scroll compressor is a kind of positive-displacement compressor applied in refrigeration systems, heat pump systems, and air conditioner systems. Using the spring smoothing method and considering the heat transfer, the numerical simulation model of the scroll compressor is established under standard working conditions. The results show that the CFD model is well validated by the experiment result
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Experimental and numerical comparisons among various skewed blades of low speed axial fan rotors Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-03-20 Ankit Bhai Patel, K Viswanath
Literature indicates that there is lack of study related to the effects of axially skewed blades on the aerodynamic performance of axial flow fans. In this study rotors of various blade skews, namely, axial, circumferential and axial-circumferential types, are studied and their aerodynamic performances are compared to those of the baseline radial rotors of two types, namely, constant chord and varying
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Waste heat utilization using organic rankine cycle from a pressurized pulverized combined cycle power plant Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-03-19 Nitesh Kumar Choudhary, Goutam Khankari, Sujit Karmakar
Power plants release a massive amount of waste heat at very low temperatures. Posing a challenge for efficient conversion into useful work through conventional methods. By selecting appropriate working fluids, low-grade power cycles can solve this problem by converting waste heat to electricity. The present work dealt with waste heat utilization using the Organic Rankine Cycle (ORC) from a 400 MWe
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Application of a new DES model based on Wray-Agarwal turbulence model in flow simulation of a mixed-flow pump Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-03-16 Leilei Ji, Haoming Li, Wei Li, Weidong Shi, Shuo Li, Yang Yang, Chensong Zhao, Ramesh K Agarwal
In recent years, it has been demonstrated for many two- and three-dimensional external and internal turbulent flows that the one-equation Wray-Agarwal turbulence model can compute the complex turbulent flow fields with high computational accuracy, excellent computational convergence and efficiency. In this paper, Wray-Agarwal (WA) turbulence model is employed as part of a detached eddy simulation (DES)
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Investigation into the predicted performance of a cooling fan for an sCO2 concentrated solar power plant Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-03-08 Francois D Boshoff, Sybrand J van der Spuy, Johannes P Pretorius, Christiaan J Meyer
An axial flow fan is designed for dry cooling of a sCO2 Brayton cycle for a CSP plant, and a scaled model of the fan is manufactured and tested experimentally in an ISO 5801:2017 Type A fan test facility. While the design procedure’s estimate of the total-to-static efficiency at the design flow rate is relatively high, at 74.4%, the experimental fan efficiency was found to be only 50.6%. This paper
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Energy loss mechanism of a full tubular pump under reverse power generation conditions using entropy production theory Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-03-02 Lijian Shi, Yiyu Chen, Xianlei Yu, Yi Han, Yao Chai, Muzi Xue
This paper investigates the energy dissipation mechanism of the internal flow field of the full tubular pump during reverse power generation and pump conditions, utilizing CFD and model test methods to research the device’s hydraulic characteristics, internal flow field and entropy production. The results indicate that the reverse power generation and pump conditions’ performance curves have opposite
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Heat transfer characteristics of the air-oil heat exchanger with spiral tube Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-02-27 Zhihai Kou, Baolin Cao, Qi Zhang, Binbin Li, Guangchao Li, Xunyan Yin
The cooling problem of hot-end components has become an important factor restricting the aero-engine performance, life and reliability. In order to improve the cooling quality of the cooling air, the supercritical aviation kerosene was used as a heat sink to cool the cooling air in a spiral heat exchanger. The flow and heat transfer process of the air-oil heat exchanger with spiral tube were numerically
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Investigation of non-axisymmetric endwall contouring in a high loaded turbine stator cascade Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-02-23 Zhengshuai Du, Le Cai, Yingjie Chen, Songtao Wang, Hongfei Tang, Jun Zeng
The intensity and structure of the secondary flows have significant influences on the turbine cascade losses. Combining with the extension method of Non-linear Programming by Quadratic Lagrangian (NLPQLP), two endwall parametric methods respectively based on the B-spline surface and Fourier series are used to optimize the aerodynamic losses of a turbine cascade. The optimization processes are based
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Thermal performance of three concentrating collectors with bifacial PV cells. Part II – parametrical study Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-02-08 Miguel Lança, João Gomes, Diogo Cabral, Sahand Hosouli
One of the problems in using PV cells to extract energy from sunlight is the temperature effect on PV cells. As the solar panel is heated, the conversion efficiency of light to electrical energy is diminished. Moreover, successive temperature elevations can cause dilatations in the array of cells which may also contribute to the degradation of the receiver. Some of the operating temperature mitigation
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A data-driven polynomial chaos method for uncertainty quantification of a subsonic compressor cascade with stagger angle errors Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-02-06 Haohao Wang, Limin Gao, Guang Yang, Baohai Wu
The probability-based uncertainty quantification (UQ) methods require a large amount of sampled data to construct the probability distribution of uncertain input parameters. However, it is a common situation that only limited and scarce sampled data are available in engineering applications due to expensive tests. In the present paper, the Data-Driven Polynomial Chaos (DDPC) method is adopted, which
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Design improvement for suction shape in rotary compressor Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-02-06 Joonhyung Kim, Munseong Kwon, Jaewoo Park, Sunghyuk Park, Woong Hwang
Rotary compressors applied to heating and cooling cycles accounts for a large proportion of the total energy consumed in the system. Therefore, improving compressor efficiency is crucial in order to reduce energy consumption. Design review and improvement efforts have primarily focused on compression and discharge parts with high pressure. However, due to the limitations in design improvements for
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Thermohydraulic performance parameter based experimental investigation of frustum shaped roughened solar air heater Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-01-29 Dharam Singh, Vikash Kumar
An outdoor experimental investigation was conducted to explore the thermohydraulic characteristic (Nusselt no. and friction factor) of artificial roughened solar air heater (ARSAH) having frustrum shaped roughened element on absorber plate. Data were recorded and further processed to generate Nusselt number and friction factor correlation to predict the effect of flow and roughness parameter on performance
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Characteristics of the axial compressor with different stator gaps in compressed air energy storage system Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-01-19 Pengfei Li, Zhitao Zuo, Xin Zhou, Jingxin Li, Wenbin Guo, Haisheng Chen
The axial compressor in compressed air energy storage (CAES) system needs to operate stably and efficiently within a wide working range. The stator gap plays a critical role in suppressing corner separation and enhancing blade throughflow. The primary objective of this study is to determine the optimal combination of stator gaps to further expand the stable working range of the compressor while ensuring
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Numerical study on the three-dimensional flow of water film on the outer surface of the hollow stationary blade Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-01-16 Yang Chen, Yujuan Zhao, Xiaodan Zhang, Yanhao Cao, Liang Li
In order to figure out the influence of water film on the performance of the turbomachinery, understand the mechanism of the interaction between the high-speed airflow and the water film in turbomachinery, and provide a reference for the design of the subsequent experiments and hollow stationary blade water removal by heating. The commercial software FLUENT with the Eulerian Wall Films model is used
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A numerical study on effect of intra and inter spaced winding configuration on performance of oil forced transformer cooling system Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-01-13 Yamala Muralikrishna, Seerapu Siva Satyanarayana Reddy, Mithilesh Kumar Sahu, M Mohan Jagadeesh Kumar
The present work aims at investigating, numerically, the heat transfer characteristics of transformer cooling system under forced circulation for three different winding configurations. The purpose of a transformer cooling system is to keep the hot spot temperature within the critical value for a long life of transformer, which increases with enhanced cooling of transformer windings. Thus, two different
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Modeling the co-combustion of bi-fuel blends in a drop tube furnace: A numerical approach Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2024-01-02 Subhajit Aich, Barun Kumar Nandi, Aditi Sengupta, Piyush Sharma
The present study focuses on the numerical modeling of the co-combustion of reject coal (RC) and sal leaves (SL) in a drop tube furnace (DTF) under different conditions, including air-fuel and oxy-fuel environments. The numerical results highlight the significant influence of replacing the N2 atmosphere with CO2 on the temperature profiles of individual fuels and their blends. For instance, when exposed
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Assessment of the Newcomen engine’s development potential as heat engine for low temperature waste heat Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-05-16 Gerald Müller, Branislav Mereš
There is a large but mostly unused energy resource available from low temperature waste heat with temperatures of 80–150°C. The lack of a cost-effective technology prevents the generation of power ...
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A review of nucleate pool-boiling heat transfer in different liquids and nanofluids Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-05-13 Khudir Z Zarrag, Firas B Ismail, Tan E Sann, Laith J Habeeb
The goal of this review is to examine the current state of the art in nucleate pool boiling heat transfer in a variety of different fluids. The review is divided into many sections that discuss hea...
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Study on modeling test method and the critical Reynolds number of a micro centrifugal pump Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-05-08 Ning Bao, Zihan Zhao, Chunlei Shao
In order to test the performance of the micro centrifugal pump and carry out performance analysis by using water instead of blood as the test medium, a modeling test method of the micro centrifugal...
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The effect of secondary passages on cavitation and radial forces in a liquid propellant turbopump Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-05-04 Yashwant Moganaradjou, Anindita Apurbaa Phukan, S Vengadesan, Dhiman Chatterjee, B Prejil Kumar, P Rijish Kumar, P Unnikrishnan Nair
Numerical studies on rocket pumps are computationally expensive and hence the secondary passages such as sidewall clearance gaps, wear ring gaps, axial balancing mechanism, coolant/lubricant paths,...
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Secondary air induced flow structures and mixing in a fixed bed combustor Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-28 Awais Junejo, Sergio Chapela, Jacobo Porteiro, Yasir M Al-Abdeli
Air staging features widely in biomass combustion from small space heaters to industrial-scale moving grate systems. Whilst studies have been conducted into the impact of air staging on emissions a...
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A detailed investigation of enhancement in heat transfer using Al2O3 nanofluid as coolant Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-27 B Swain, AR Pati, SS Mohapatra
In the current research, enhancement in the film and transition boiling regime is tried to obtain using Al2O3 nanofluid as coolant. The coolant properties such as physical, thermal and interfacial ...
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Advanced exergoeconomics of a steam power plant based on double-tier splitting of exergy destruction rates Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-26 Uchenna G Azubuike, Howard O Njoku, Onyemaechi V Ekechukwu
The advanced exergy and exergoeconomic analysis methodologies excel over their conventional counterparts by quantifying endogenous/exogenous exergy destruction rates and related costs that reveal t...
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Numerical study on cavitation flow and induced pressure fluctuation characteristics of centrifugal pump Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-26 Haichen Zhang, Haojie He, Wei Dong
In order to reveal the variation law between cavitation process and pressure pulsation characteristics of centrifugal pump, the internal flow characteristics and pressure pulsation characteristics ...
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Effect of wear damage on aero-thermal performance of the film-cooled squealer tip in a turbine stage Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-26 Mingliang Ye, Xin Yan, Kun He
Effects of wear damage on the aerodynamic performance, heat transfer and film cooling effect in the squealer tip region of a gas turbine stage were investigated under engine condition. Two wear par...
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Reliability based design of propeller and Rushton impellers for maximizing the overall heat transfer coefficient in coal gasification Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-25 J Purushottam Karthik, CM Raguraman, C Tara Sasanka
The present study aims to identify the optimal process parameters to maximize the Overall Heat Transfer Coefficient for preparation of coal-water slurry used for gasifier in power plants. For this ...
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Experimental and Numerical Optimization Study on an Airfoil-Shaped Heat Exchanger Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-21 Xuesen Yang, Wei Zhao, Xianda Cheng, Wei Dong, Weiwei Luo, Qingjun Zhao
Heat exchanger design is a laborious and time-consuming task that often relies on a trial-and-error process. In light of this, our study proposes a design method for optimizing airfoil-shaped heat ...
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Parameter sensitivity analysis of an electrochemical-thermal model for energy-storage lithium-ion batteries Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-12 Mingfei Li, Wanmei Sun, Mumin Rao, Shuxin Cui, Qiang Fu, Wei Chen
The lithium-ion batteries used for energy storage have the characteristics of large volume, high capacity, and long cycle life. Understanding the influence of physical parameters on electric potent...
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Numerical investigation on combustion flow characteristics of a micro gas turbine swirl combustor with different protruded bluff body structures Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-04-01 Hong Liu, Zhuoxiong Zeng, Kaifang Guo
A micro gas turbine swirl combustor with protruded bluff body is proposed. Compared with no bluff body, the protruded bluff body can significantly improve the combustion performance. When the bluff...
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Modifications of double-rim geometry to improve thermal performance of squealer tip in a turbine stage Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-30 Xin Yan, Jinxing Yu, Kun He
The double-recessed (i.e. double-rim) design is an alternative to improve thermal performance of the squealer tip. In this paper, the aero-thermal performance of double-rim squealer tip in a turbin...
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Design evaluation reviews on the savonius, darrieus, and combined savonius-darrieus turbines Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-28 Komsan Tantichukiad, Azmi Yahya, Anas Mohd Mustafah, Azmin Shakrine Mohd Rafie, Ahmad Suhaizi Mat Su
The combination of Savonius and Darrieus turbines had been proposed with the aim to overcome the weaknesses and complement the strengths from each design. This paper gathers relevant information an...
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Effect of flash-boiling spray on ignition and flame-holding characteristics under sub-atmospheric pressure Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-22 Junjie Miao, Kailin Jiang, Xiankai Li, Chao Yin, Yuxin Fan
To prevent the performance degradation and flameout of an afterburner/ramjet combustor under sub-atmospheric pressure, the flash-boiling spray by twin-orifice nozzle is attempted to incorporate wit...
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Utilizing artificial intelligence to develop an advanced compressor airfoil family for industrial, aero-derivative, and heavy-duty gas turbines Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-21 Alireza Shahrabi Farahani, Esmaeil Mohammadi, Mohammad Alizadeh
This paper describes the procedure for developing a new airfoil family. This airfoil family applies to heavy-duty, industrial, and aero-derivative gas turbine compressors ranging from subsonic to t...
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Theoretical model and simulation of a twin-Screw multiphase pump with novel smooth screw rotors for gas-Oil mixed transportation Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-21 Shiyang Pan, Jun Wang, Xihao Zhao, Hongxin Li, Zengli Wang, Maofei Geng, Dong Cui
A pair of screw rotors, the core components of twin-screw multiphase pumps, primarily determine the pump performance. The conventional screw rotor contains unsmooth edges caused by unsmooth points ...
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Parametric and economic analysis of condensing heat exchanger combined with organic rankine cycle for heat and water recovery from boiler flue gas Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-17 Erfan Ghamati, Javad M Roudaki
This study concerns with heat and water recovery from the flue gas of a natural gas-fired thermal power plant. A combined system of condensing heat exchanger (CHE) and Organic Rankine Cycle (ORC) i...
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A new method for reciprocating compressor fault diagnosis based on indicator diagram feature extraction Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-15 Weifeng Wu, Chengyi Li, Zhongqing Zhu, Xiaoran Li, Yin Zhang, Jing Zhang, Yifan Yang, Xiaoling Yu, Bingsheng Wang
The damage of vulnerable components inside the cylinder of reciprocating compressor, including the valve, piston ring, packing and piston ring, will cause the unexpected shutdown of the compressor ...
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Investigation of energy loss mechanism of shroud region in A mixed-flow pump under stall conditions Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-15 Leilei Ji, Shenglei He, Yongkang Li, Wei Li, Weidong Shi, Shuo Li, Yangyang, Yongfei Yang, Yong Gao, Ramesh K Agarwal
The energy consumption of various pumps accounts for almost 20% of the world’s electricity production, and the improvement of pump efficiency could save enormous energy consumption globally. In a m...
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Influence of vortex interactions on the exergy transfer and performance of OWC wells turbine Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-13 Kaihe Geng, Ce Yang, Hanzhi Zhang, Ben Zhao, Chenxing Hu, Jianbing Gao, Yanzhao Li
To provide deep dives about aerodynamic loss mechanisms in Wells turbines for wave energy conversion, a loss audit analysis was performed by numerical experiments in a monoplane Wells turbine with ...
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Adjoint based aero-structural design optimisation of a transonic fan blade Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-14 Cleopatra Cuciumita, Ning Qin, Shahrokh Shahpar
A novel optimisation process has been proposed in this paper to maximize the aerodynamic efficiency of a modern fan blade while satisfying the structural constraint imposed by the material limits. ...
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Effect of different axial deflected angles of reversed blade-angle slots on the axial flow compressor performance and stability Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-14 Haoguang Zhang, Xinyi Zhong, Enhao Wang, Chiyuan Zhang, Wuli Chu
The aim of the paper is to explore the influence of the reversed blade-angle slot casing treatment (RBSCT) and its axial deflected angle (ADA) on the compressor performance and stability, and to re...
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The influence of blade trailing edge modification on the pressure pulsation inside a two-stage centrifugal pump Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-13 Baoling Cui, Yinchu An, Xiaotian Han, Wenqing Li
Adjusting the clearance between the rotor and the stator in the centrifugal pump is an effective measure to reduce the pressure pulsation. In this paper, we investigated the influence of blade trai...
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Investigation on NO reduction behavior within complex atmosphere during pilot ignition of low calorific gas Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-09 Yongbo Du, Meng Xing, Jingkun Zhang, Lei Deng, Defu Che
Low calorific gas (LCG) is largely produced in industries and agricultures, but its utilization is difficult due to the poor combustibility and high NOx emission. The pilot ignition combustion has ...
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Study on the balance force regulation method of multi-stage pump balance drum system Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-08 Qian Chen, Yang Lihuan, Qi Zhipeng, Yang Congxin
Balanced drum systems are widely used in high-pressure multi-stage pump axial force balancing mechanisms. When the pump working, the fluid (solid-fluid mixture) collides with each other or rubs aga...
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Mechanism analysis and uncertainty quantification of blade thickness deviation on rotor performance Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-07 Wuli Chu, Tianyuan Ji, Xiangyi Chen, Bo Luo
The blade thickness distribution is an important geometric parameter of a compressor rotor blade. It determines the aerodynamic performance of a rotor, which should be carefully designed. However, ...
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Vortex structure and pressure fluctuation of a pump-turbine in pump mode using large Eddy simulation Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-03-07 Yang Zhang, Wei Jiang, Yuchuan Wang, Ye Li, Diyi Chen
Pump-turbines are usually used to ensure the stability of power system frequency and make up for the shortcomings of the intermittent nature of new energy such as wind energy. They are an important...
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Techno-economic analysis of thermal energy storage systems Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-27 Anil Kumar Patil, Manoj Kumar
The rising energy demand can be met by increasing the share of renewable energy by overcoming the barriers of poor conversion efficiency, intermittent energy supply, and lower thermo-economic viabi...
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The effect of wake vortex on the unsteady characteristics of tip leakage flow in a high-loading counter-rotating compressor Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-27 Qiangren Xu, Wei Zhao, Qingjun Zhao, Weiwei Luo, Xiuming Sui, Binbin Liu
The effect of upstream wake vortex on the unsteady characteristics of downstream tip leakage flow (TLF) in a high-loading counter-rotating compressor, have been revealed. For the strength of the ti...
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Numerical study of heat transfer and pressure drop of nanofluids in a combined porous media of hydrophobic and hydrophilic surfaces Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-21 Amir Babaei, Ehsan Aminian, Hamid Saffari
The present study provides a 3D numerical research on the hydro-thermal performance of water-Al2O3/CuO nanofluids and water/Al2O3-CuO hybrid nanofluid inside a U-bend tube incorporating a porous me...
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Investigations on the unsteady flow mechanism of the high-throughflow fan with partial-height booster rotor Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-20 Chuangxin Zhou, Shengfeng Zhao, Xin’gen Lu
This paper describes the use of numerical simulations to evaluate the complicated steady and unsteady flow in a high-throughflow fan stage. A detailed investigation of the aerodynamic performance i...
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Microwave application as an alternative method to increase the efficiency of PtC catalyst in PEMFCs Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-16 Ömer Şahin, Adem Yilmaz, Arzu Ekinci
This study aims to develop a high-performance Pt/C catalyst for the cathode and anode parts of a modified Proton exchange membrane (PEM) fuel cell in nitrogen and argon gases at different microwave...
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Experimental investigation of crossflow air effect on spray characteristics of gelled Jet-A1 fuel using an internally impinging air-blast atomizer Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-17 Balaguru Pandian, Rajarshi Das
The present study aims to experimentally analyse the influence of crossflow aerodynamic parameters on the spray characteristics of gelled Jet-A1 fuel. A Jet-A1 gel fuel is prepared by combining 85 ...
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Numerical investigation of trailing edge losses in transonic ORC turbines Proc. Inst. Mech. Eng. Part A J. Power Energy (IF 1.7) Pub Date : 2023-02-17 Mustafa Bilgiç, Tolga Yasa, Özgür U Baran, Mehmet H Aksel
Profile loss that contributes 1/3 of their total loss is one of the major sources of entropy within the turbine blades. Understanding loss mechanisms and accurate prediction of them play critical r...