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首页> 外文期刊>International Journal of Heat and Mass Transfer >3D heat transfer analysis in a loop heat pipe evaporator with a fully saturated wick
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3D heat transfer analysis in a loop heat pipe evaporator with a fully saturated wick

机译：具有完全饱和油芯的回路热管蒸发器中的3D传热分析

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摘要

A practical quasi three-dimensional numerical model is developed to investigate the heat and mass transfer in a square flat evaporator of a loop heat pipe with a fully saturated wicking structure. The conjugate heat transfer problem is coupled with a detailed mass transfer in the wick structure, and incorporated with the phase change occurring at the liquid-vapor interface. The three-dimensional governing equations for the heat and mass transfer (continuity, Darcy and energy) are developed, with specific attention given to the wick region. By comparing the results of the numerical simulations and the experimental tests, the local heat transfer mechanisms are revealed, through the obtained temperature distribution and the further derived evaporation rates along the liquid-vapor interface. The results indicate that the model developed herein can provide an insight in understanding the thermal characteristics of loop heat pipes during steady-state operation, especially at low heat loads.
机译：建立了一个实用的准三维数值模型，以研究具有完全饱和芯吸结构的环形热管的方形平面蒸发器中的传热和传质。共轭传热问题与灯芯结构中的详细质量传递结合在一起，并与在液-气界面处发生的相变结合在一起。建立了传热传质的三维控制方程（连续性，达西和能量），并特别注意了芯子区域。通过比较数值模拟和实验测试的结果，通过获得的温度分布和沿液-气界面的进一步导出的蒸发速率，揭示了局部传热机理。结果表明，本文开发的模型可以为了解稳态运行期间（尤其是在低热负荷下）环路热管的热特性提供洞察力。

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