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The Research of Thermal Dispersion in Porous Medium with Different Skeleton Structures

机译：不同骨架结构多孔介质热分散的研究

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摘要

A numerical simulation method is hereby adopted in this paper to calculate and analyze the thermal dispersion influence factors of three particle-shaped porous mediums of two-dimensional porous medium with different skeleton structures. Result shows that the thermal dispersion influence factors include fluid thermal properties, Darcy velocity, porosity and skeleton structure, etc. Under the same condition, the thermal dispersion coefficient of a circular particle model is maximum, and it increases with the rise of Pe_d number; with the increase of the porosity or the reduction of Darcy velocity, the thermal dispersion coefficient reduces increasingly. When considering the thermal dispersion effect, the axial temperature variation of fluid is more applicable for numerical simulation, which proves that it shall consider the thermal dispersion during researches on porous medium models.
机译：本文采用了数值模拟方法，以计算和分析具有不同骨架结构的三种颗粒状多孔介质的三种颗粒状多孔介质的热分散影响因子。 结果表明，热分散影响因素包括流体热性质，达西速度，孔隙率和骨架结构等。在相同的条件下，圆形粒子模型的热分散系数最大，随着PE_D数的升高而增加; 随着孔隙率的增加或达西速度的降低，热分散系数越来越多地减少。 当考虑热分散效果时，流体的轴向温度变化更适用于数值模拟，这证明它应考虑在多孔介质模型的研究期间的热分散。

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