Abstract Investigations into the characteristics of turbulent heat transfer and coherent flow structures in a plane-channel subjected to wall-normal system rotation are conducted using direct numerical simulation (DNS). In order to investigate the influence of system rotation on the temperature field, a wide range of rotation numbers are tested, with the flow pattern transitioning from being fully turbulent to being quasilaminar, and eventually, fully laminar. In response to the Coriolis force, secondary flows appear as large vortical structures, which interact intensely with the wall shear layers and have a significant impact on the distribution of turbulence kinetic energy (TKE), turbulence scalar energy (TSE), temperature statistics, and turbulent heat fluxes. The characteristic length scales of turbulence structures responsible for the transport of TSE are the largest at the quasilaminar state, which demands a very large computational domain in order to capture the two-dimensional spectra of temperature fluctuations. The effects of the Coriolis force on the turbulent transport processes of the temperature variance and turbulent heat fluxes are thoroughly examined in terms of their respective budget balances.

中文翻译：

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壁法向旋转通道流动中湍流传热的直接数值模拟

摘要 使用直接数值模拟 (DNS) 对受壁法向系统旋转影响的平面通道中的湍流传热和相干流结构的特性进行了研究。为了研究系统旋转对温度场的影响，测试了广泛的旋转数，流动模式从完全湍流过渡到准层流，最终完全层流。响应科里奥利力，二次流表现为大涡结构，与壁面剪切层相互作用强烈，对湍流动能（TKE）、湍流标量能（TSE）、温度统计和湍流热通量。负责 TSE 传输的湍流结构的特征长度尺度在准层状状态下最大，这需要非常大的计算域来捕获温度波动的二维光谱。科里奥利力对温度变化和湍流热通量的湍流传输过程的影响根据它们各自的预算平衡进行了彻底检查。