| 湿饱和多孔介质冻结过程中壁面效应的影响 |
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| 引用本文： | 马骥,王补宣.湿饱和多孔介质冻结过程中壁面效应的影响[J].化工学报,1996,47(1):16-21. |
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| 作者姓名： | 马骥 王补宣 |
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| 作者单位： | 清华大学热能工程系!北京100084,清华大学热能工程系!北京100084 |
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| 摘 要： | 采用节点跳跃技术的隐式数值焓法，对湿饱和多孔介质在第三类边界条件下发生的一维“双区域”导热控制型冻结过程进行求解，着重讨论了壁面效应的存在对冻结过程的影响．
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| 关 键 词： | 多孔介质 壁面效应 冻结过程 |
EFFECT OF VARIABLE POROSITY NEAR THE WALL ON FREEZING HEAT TRANSFER IN LIQUID-SATURATED POROUS MEIDIA |
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| Ma Ji,Wang Buxuan.EFFECT OF VARIABLE POROSITY NEAR THE WALL ON FREEZING HEAT TRANSFER IN LIQUID-SATURATED POROUS MEIDIA[J].Journal of Chemical Industry and Engineering(China),1996,47(1):16-21. |
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| Authors: | Ma Ji Wang Buxuan |
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| Affiliation: | Ma Ji,Wang Buxuan(Tsinghua University,beijing ) |
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| Abstract: | The one-dimensional conduction-dominated freezing heat transfer problem has been numerically solved using the implicit enthalpy method with the node-jump technique.The effect of variable porosity near the wall on freezing heat transfer rate is presented and discussed for the first time.The results for glass bead saturated with water have shown that during the precooling period,there is no obvious effect of variable porosity on the freezing process,while during the freezing period.the variable porosity will enhance freezing heat transfer and obviously increase the freezing depth. |
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| Keywords: | porous media effect of variable porosity near the wall freezing heat transfer |
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