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首页> 外文期刊>International Journal of Heat and Mass Transfer >Simulation of thermal processes in a flat evaporator of a copper-water loop heat pipe under uniform and concentrated heating
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Simulation of thermal processes in a flat evaporator of a copper-water loop heat pipe under uniform and concentrated heating

机译：均匀集中加热下铜水回路热管平面蒸发器中的热过程模拟

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摘要

A 3D model has been developed for investigating heat and mass transfer in a flat evaporator of a copper-water loop heat pipe. It takes into account heat-transfer processes in the active zone, the barrier layer of the wick, the wall and the compensation chamber. The problem was solved by the finite difference method with the use of a nonuniform grid adapted to the configuration of the flat evaporator and its geometric peculiarities. Investigations have been carried out for understanding the effect of the heating zone size on heat distribution in the evaporator. The heating area was 9 cm~2 with a uniform heat supply and 1 cm~2 with a concentrated one. Numerical simulation has been performed for a heat load range from 20 to 1100 W. Data have shown that a decrease in the heating area at a fixed heat load results in both increasing temperature on the evaporator wall under the heater and local wick draining in the active zone. The results of the model have been verified using results of experimental tests.
机译：已经开发了3D模型，用于研究铜-水回路热管的平面蒸发器中的传热和传质。它考虑了有效区域，油芯的阻隔层，壁和补偿室中的传热过程。该问题通过有限差分法解决，方法是使用非均匀栅格来适应平面蒸发器的构造及其几何特性。已经进行了研究以了解加热区尺寸对蒸发器中的热分布的影响。加热面积为9 cm〜2，有均匀的热量供应； 1 cm〜2，有集中的热量。对20至1100 W的热负荷范围进行了数值模拟。数据表明，在固定的热负荷下，加热面积的减少会导致加热器下方蒸发器壁上的温度升高，以及主动装置中的局部芯吸现象。区。该模型的结果已使用实验测试的结果进行了验证。

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