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Modeling two-phase flow in a micro-model with local thermal non-equilibrium on the Darcy scale

机译:在达西尺度上具有局部热不平衡的微观模型中模拟两相流

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Loosening local equilibrium assumptions in two-phase flow in porous media gives rise to new, unknown variables. More specifically, when loosening the local thermal equilibrium assumption, one has to describe the heat transfer between multiple phases, present at the same mathematical point. In this paper, we calibrate a macro-scale mathematical model which is free of local equilibrium assumptions to experimental observations. We emphasize the correct determination and upscaling of necessary input parameters from the experimental data achieved by image analysis. By choosing an appropriate scaling parameter, we are able to reproduce experimental measurements satisfactorily. This is a first step towards quantifying heat transfer in two-phase flow in porous media. Ultimately, our aim is to find the limits of the applicability of local equilibrium assumptions in two-phase flow in porous media.
机译:多孔介质两相流中局部平衡假设的松散会产生新的未知变量。更具体地说,在放松局部热平衡假设时,必须描述存在于同一数学点的多个相之间的热传递。在本文中,我们校准了一个宏观数学模型,该模型没有实验观察的局部均衡假设。我们强调通过图像分析获得的实验数据,正确确定必要的输入参数并按比例放大。通过选择适当的缩放参数,我们可以令人满意地重现实验测量值。这是量化多孔介质中两相流传热的第一步。最终,我们的目标是找到多孔介质中两相流中局部平衡假设的适用范围。

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