Hydrothermal fluid circulation in anisotropic permeable media associated with discrete fractures

来源期刊：中国有色金属学报(英文版)2000年第4期

论文作者：杨建文

文章页码：542 - 547

Key words：hydrothermal fluid circulation; anisotropic permeable media; fractures

Abstract: A proper form of the Rayleigh number, containing the geometric mean of the vertical and horizontal permeabilities was obtained. The critical value for the onset of stable convection was found. The results proved analytically and numerically that anisotropy in permeability resists the initiation of hydrothermal convection. The equivalence between homogeneously anisotropic media and multiply fractured media was also investigated. It was confirmed that multiply fractured models are comparable to anisotropic models as long as they have the same averaged horizontal or vertical permeabilities and other physical parameters.