| 含湿毛细多孔介质干燥过程相变传热传质分析 |
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| 引用本文： | 卢涛,沈胜强,葛玉林.含湿毛细多孔介质干燥过程相变传热传质分析[J].工程热物理学报,2003,24(1):100-102. |
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| 作者姓名： | 卢涛 沈胜强 葛玉林 |
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| 作者单位： | 大连理工大学动力工程系,辽宁,大连,116024 |
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| 基金项目： | 辽宁省科学技术基金资助项目(No.9522055) |
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| 摘 要： | 分析了含湿毛细多孔介质干燥过程的主要机理,建立了以液相饱和度、温度和气体压力为参数的一维数学模型, 采用全隐式有限差分方法对该模型进行了数值计算。计算结果表明,干燥过程可分为两个阶段:不稳定阶段和稳定阶段。 在不稳定阶段,模拟参数变化剧烈,而在稳定阶段,模拟参数变化平稳。
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| 关 键 词： | 多孔介质 干燥 传热传质 |
| 文章编号： | 0253-231X(2003)01-0100-03 |
| 修稿时间： | 2002年11月5日 |
ANALYSIS ON HEAT AND MASS TRANSFER WITH PHASE CHANGE IN WET CAPILLARY POROUS MEDIA DURING DRYING |
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| LU Tao SHEN Sheng-Qiang GE Yu-Lin.ANALYSIS ON HEAT AND MASS TRANSFER WITH PHASE CHANGE IN WET CAPILLARY POROUS MEDIA DURING DRYING[J].Journal of Engineering Thermophysics,2003,24(1):100-102. |
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| Authors: | LU Tao SHEN Sheng-Qiang GE Yu-Lin |
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| Abstract: | The primary mechanisms affecting drying process of wet capillary porous media were analyzed and a one-dimension model was established to predict the variations of saturation, temperature, and gas pressure in porous media during drying. The numerical technique was employed to solve the one-dimensional model with implicit finite difference method. Numerical results present that the drying process could be divided into two periods: unstable and stable. The simulation parameters change acutely in unstable period but they change smoothly in stable one. |
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| Keywords: | porous media drying heat and mass transfer |
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