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Effect of ribbing of the internal rotating cylinder in the Couette–Taylor system on the value of rotational resistance moment
Thermophysics and Aeromechanics ( IF 0.5 ) Pub Date : 2024-01-03 , DOI: 10.1134/s0869864323040042
V. N. Mamonov , N. B. Miskiv , A. D. Nazarov , A. F. Serov , V. I. Terekhov

The experimental results on the effect of longitudinal ribs on the rotational resistance moment for the Couette–Taylor flow between two rotating cylinders are presented. The tangential Reynolds number in the experiments was varied by changing the velocity of cylinder rotation and the working fluid (water-glycerin solution) viscosity. The experiments covered laminar, transient, and turbulent flow regimes (Re = 200–1·105). It is shown that the ribs have an amplifying effect on the rotational resistance moment and mechanical energy dissipation only in the region of small Reynolds numbers (Re < 2000) in the laminar regime and in the presence of Taylor vortices in the gap. The intensification effect can reach two and more times and is caused by an intensive flow turbulization by longitudinal ribs. In the turbulent regime, the heat release intensification is not observed, which is confirmed by the data available in the literature.



中文翻译:

Couette-Taylor系统内部旋转圆柱体的肋对旋转阻力矩值的影响

给出了纵向肋对两个旋转圆柱体之间的库埃特-泰勒流的旋转阻力矩影响的实验结果。实验中的切向雷诺数通过改变圆筒旋转速度和工作流体(水-甘油溶液)粘度来改变。实验涵盖层流、瞬态流和湍流流态 (Re = 200–1·10 5 )。结果表明,仅在层流区域中的小雷诺数(Re < 2000)区域和间隙中存在泰勒涡时,肋对旋转阻力矩和机械能耗散具有放大作用。强化效果可达两倍及以上,是由纵向肋片强烈的流动紊流引起的。在湍流状态下,没有观察到放热加剧,这一点已被文献中的数据证实。

更新日期:2024-01-03
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