Numerical investigation on heat transfer of supercritical CO2 in rolling motion

doi:10.7523/j.issn.2095-6134.2018.02.020

Abstract

Abstract: The numerical calculations with and without rolling motion are carried out to investigate the effects of rolling motion on flow and heat transfer of supercritical CO₂. It is concluded that the effect of rolling motion on the supercritical CO₂ is much stronger than that on conventional single-phase fluid. The rolling motion causes the periodic oscillation of the local heat transfer coefficient and suppresses the whole heat transfer deterioration. As the supercritical CO₂ temperature increases, the influence of rolling motion on the heat transfer decreases markedly. The heat transfer deterioration phenomenon gradually weakens as the rolling period decreases or rolling amplitude increases.

Key words: rolling motion, numerical simulation, flow distribution, supercritical fluid

CLC Number:

TL331

ZHAO Zhenxing, LIN Yuansheng, ZHANG Kelong, LIU Zhouyang. Numerical investigation on heat transfer of supercritical CO₂ in rolling motion[J]. , 2018, 35(2): 280-288.

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Numerical investigation on heat transfer of supercritical CO₂ in rolling motion

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