Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 10    No. 4    August 2000

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Hydrothermal fluid circulation in
anisotropic permeable media associated with discrete fractures①
YANG Jian-wen(杨建文)

School of Earth Sciences, University of Tasmania, Hobart, Tasmania 7001, Australia

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.


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

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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