TRANSPIRATION COOLING WITH LOCAL THERMAL NONEQUILIBRIUM: MODEL COMPARISON IN MULTIPHASE FLOW IN POROUS MEDIA

被引：0
|
作者：
Lindner, Franz [1 ]
Nuske, Philipp [2 ]
Weishaupt, Kilian [2 ]
Helmig, Rainer [2 ]
Mundt, Christian [1 ]
Pfitzner, Michael [1 ]
机构：
[1] Univ Fed Armed Forces, Inst Thermodynam, Dept Aerosp Engn, D-85577 Neubiberg, Germany
[2] Univ Stuttgart, Dept Hydromech & Modelling Hydrosyst, D-70569 Stuttgart, Germany
来源：
JOURNAL OF POROUS MEDIA | 2016年 / 19卷 / 02期
关键词：
porous evaporator; transpiration cooling; multiphase flow; phase change; local thermal nonequilibrium; mixture model; fully coupled model; VAPOR PHASE-CHANGE; HEAT-TRANSFER; NUMERICAL-SIMULATION; MIXTURE MODEL; 2-PHASE FLOW; CONVECTION; EVAPORATION; TRANSPORT;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This article investigates the evaporation process in porous media during transpiration cooling. This means that a strong heat source fully evaporates a high liquid flux, leading to complex flow situations. This multiphase flow with phase change setting is simulated with two different models, implemented in MATLAB and DuMu, a free and open source simulator, respectively. These models use different mathematical and numerical schemes but are able to simulate local thermal nonequilibrium. For a sample 1D case, the models are tested against one another and compared to results from the literature. Considerable differences to the published results are found, but the two models in this work show almost the same behavior, without any calibration employed.
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页码：131 / 153
页数：23
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