材料科学
冷却液
蒸腾作用
多孔性
传热
计算流体力学
机械
传质
流量(数学)
多孔介质
复合材料
热力学
化学
物理
生物化学
光合作用
作者
Weijie Chen,Ke Wang,Yongqing Wang,Shan‐Tung Tu,Zunchao Liu,Huijuan Su
标识
DOI:10.1016/j.ijthermalsci.2023.108755
摘要
In this paper, a novel gradient porosity transpiration cooling plate structure (GP-TCPS) is proposed to address the heat transfer deterioration phenomenon owing to non-uniform local temperature distribution in transpiration cooling plate structure (TCPS). The flow and heat transfer (FAHT) of the GP-TCPS were analyzed qualitatively and quantitatively by computational fluid dynamics (CFD) and response surface method (RSM). The effects of various parameters on the injection pressure (Pc) and average cooling efficiency (ηave) of the GP-TCPS were investigated, ultimately identifying optimal structural parameters. The results show that the GP-TCPS significantly improves the temperature uniformity by 20.58–23.78 % compared to uniform porosity transpiration cooling plate structure (UP-TCPS) at low coolant mass flow rates. Compared with the UP-TCPS, the Pc of the GP-TCPS decreases by 84.5–86.2 %, and the deviation of the ηave is 1.3–2.4 %. The RSM indicates that the most important parameters affecting the Pc and ηave of the GP-TCPS are average particle diameter and the thickness of porous media, respectively. The Pc of the optimized structure is reduced by 57.19–77.39 %, the ηave is increased by 7.72–9.42 %, and the temperature uniformity is increased by 52.33–66.14 %. The results provide valuable insights into the mechanism of TCPS and offer promising solutions to mitigate heat transfer deterioration.
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