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对矩形截面涡旋微槽试件在过载加速度环境下的传热特性进行了实验研究,所用工质为体积分数为30%的乙二醇水溶液,并由离心式恒加速度试验机为试件提供离心力来模拟所需的过载加速度环境.通过实验对不同工质流量、不同加热功率下的涡旋微槽在不同加速度条件下的传热性能进行了考察,分析了加速度环境对其传热特性的影响.结果表明:加速度方向对其传热特性有着决定性的影响,且Dean数越大,涡旋微槽适应过载加速度对其传热特性的影响的能力则越强.
The heat transfer characteristics of a rectangular cross-section vortex micro-groove specimen under overload acceleration conditions were studied experimentally. The working fluid used was 30% ethylene glycol aqueous solution and was provided by a centrifugal constant acceleration tester Centrifugal force to simulate the required overload acceleration environment.The heat transfer performance of vortex microgrooves under different accelerations with different working medium flow rates and heating powers was investigated experimentally.The influence of acceleration environment on the heat transfer characteristics The results show that the direction of acceleration has a decisive influence on the heat transfer characteristics, and the larger the Dean number, the stronger the ability of the vortex microgroove to adapt to the influence of overload acceleration on the heat transfer characteristics.