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

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 1049-1050)
• Pages: 148-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1049-1050.148
• Online since: October 2014
• Authors: Hong Ren Zhan, Hong Feng Xu*, Shi Fang Li, Xian Zhen Zhang, Ya Xia Li
• Keywords: Numerical Simulation, Particle Shape, Porous Medium, Thermal Dispersion

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