Abstract
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.
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The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (megagrant No. 075-15-2021-575).
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Mamonov, V.N., Miskiv, N.B., Nazarov, A.D. et al. Effect of ribbing of the internal rotating cylinder in the Couette–Taylor system on the value of rotational resistance moment. Thermophys. Aeromech. 30, 637–647 (2023). https://doi.org/10.1134/S0869864323040042
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DOI: https://doi.org/10.1134/S0869864323040042