传质对饱和多孔通道泊苏耶贝纳德流熵产生波动的影响

穆尼 尔·, 拉赫 玛·, 穆拉 德·
加贝斯大学化学和工艺工程系

摘要

本文报道了在垂直热梯度和质量梯度下，长径比 A=5 的饱和多孔通道中不可逆性的瞬态数值研究.使用达西-布林克
曼公式的控制方程已通过使用控制体积有限元法（CVFEM）进行数值求解。只考虑两个变量，施密特数和浮动率。其他参数
值是固定的，与泊苏耶-贝纳德流有关（在零质量梯度下）。结果表明，不同状态下的流动趋向于稳态，这取决于施密特数和
浮力比。

关键词

混合对流；多孔介质；熵生成；普里高津定理

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