Abstract

Average heat transfer in a turbulent flow on a plate with a system of double-cavity diffuser-type dimples is studied experimentally. The regime of turbulent flow almost reproduces the airflow in a cooling system of a turbine blade. Physical and numerical simulation of flow in a double-cavity diffuser-type dimple is performed. Two self-organizing vortices emerging in the dimple were documented. They provide continuous mass transfer between the dimple and the flow. Numerical simulation results agree well with the physical experiment.

中文翻译：

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双腔扩散器型酒窝传热与流动的物理和数值模拟

摘要

实验研究了具有双腔扩散器型凹痕的平板在湍流中的平均传热。湍流状态几乎再现了涡轮叶片的冷却系统中的气流。对双腔扩散器型酒窝中的流动进行了物理和数值模拟。记录了在酒窝中出现的两个自组织涡旋。它们在酒窝和水流之间提供连续的质量传递。数值模拟结果与物理实验吻合良好。