Numerical simulation of heat and mass transfer in a 3D model of a loop heat pipe evaporator

IF 0.2 Q4 PHYSICS, MULTIDISCIPLINARY

St Petersburg Polytechnic University Journal-Physics and Mathematics Pub Date : 2017-10-01 DOI:10.1016/j.spjpm.2017.09.013

Aleksey A. Pozhilov, Dmitri K. Zaitsev, Evgueni M. Smirnov, Aleksander A. Smirnovsky

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引用次数: 12

Abstract

The article presents results of 3D numerical simulation of flow and conjugate heat and mass transfer in a model of the TacSat-4 satellite loop heat pipe evaporator. The mathematical model includes the Reynolds-averaged Navier–Stokes equations describing the flow in the liquid and vapor regions, Darcy's law for filtration modeling in the wicks and the energy equation with accurate coupling of connected sub-domains including effects of evaporation on interfaces between the porous and vapor regions. According to the simulation results, the evaporation localizes mainly at the vapor groove corners near the evaporator body. The vapor grooves operate under essentially different conditions, as a result, the flow rates differ by several times. Significant thickening of the evaporator body yields only weak reduction in a level of the grooves’ flow rate non-uniformity.

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环形热管蒸发器三维模型传热传质数值模拟

本文介绍了TacSat-4卫星环路热管蒸发器模型中流动和共轭传热传质的三维数值模拟结果。数学模型包括描述液体和蒸汽区域流动的reynolds -average Navier-Stokes方程，用于芯内过滤建模的Darcy定律，以及包含蒸发对多孔和蒸汽区域界面影响的连接子域精确耦合的能量方程。模拟结果表明，蒸发主要集中在靠近蒸发器本体的蒸汽槽转角处。汽槽在不同的工况下运行，其流量相差数倍。蒸发器体的显著增厚仅在一定程度上降低了槽的流量不均匀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

St Petersburg Polytechnic University Journal-Physics and Mathematics PHYSICS, MULTIDISCIPLINARY-

自引率

50.00%

发文量