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首页> 外文会议>日本伝熱シンポジウム >Direct numerical simulation of stably-stratified turbulent channel flows with CO{sub}2 supercritical pressure
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Direct numerical simulation of stably-stratified turbulent channel flows with CO{sub}2 supercritical pressure

机译：具有CO {SUB} 2超临界压力的稳定分层湍流通道的直接数值模拟

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摘要

In this study, Direct Numerical Simulations of stably-stratified turbulent channel flows with CO{sub}2 supercritical pressure were conducted to investigate strongly property change and buoyancy effects on turbulent structures and heat transfer. Caused from high-Pr effects near critical point, buoyancy effects on flow laminarization were reduced and temperature intensity was increased near channel center. Correlation terms of property change and turbulent convective motion were dominant factor but correlation terms of property change and heat conduction were inactive for the mean-temperature equation budget.
机译：在该研究中，进行了CO {} 2的稳定分层湍流通道的直接数值模拟2超临界压力以研究强烈的性能变化和对湍流结构和传热的浮力影响。从临界点附近的高Pr效果引起，减少了对流动层压的浮力效应，并且在通道中心附近增加了温度强度。性质变化和湍流对流运动的相关性占主导地位因子，但性能变化和热传导的相关性对于平均温度方程预算是不活跃的。

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