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Type: Conference paper
Title: Calculation of equivalent permeability of different fracture intersections in fracutred porous media
Author: Tian, Z.
Shang, J.
Xu, C.
Natarajan, N.
Citation: MODSIM2013: 20th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2013 / J. Piantadosi, R. S. Anderssen and J. Boland (eds.): pp.1542-1546.
Publisher: The Modelling and Simulation Society of Aust & NZ
Publisher Place: Australia
Issue Date: 2013
ISBN: 9780987214331
Conference Name: International Congress on Modelling and Simulation (20th : 2013 : Adelaide, South Australia)
Editor: Piantadosi, J.
Anderssen, R.S.
Boland, J.
Statement of
Zhao Feng Tian, Jian Shang, Chaoshui Xu, N. Natarajan
Abstract: This paper reports a case study of calculation of equivalent permeability in Hot Dry Rock (HDR) system using an approach based on finite volume Computational Fluid Dynamics (CFD) method. In this case study, mass flow rates of water in two fractures crossing in a 300 mm x 300 mm two-dimensional (2D) block are predicted by CFD method for different pressure drops. The predicted mass flow rates are then used to calculate the equivalent permeability, Kx at x direction and Ky at y direction. A series of angles between these two fractures, α, are investigated and the results of α= 90, 60 and 50 degrees are reported in the paper. It is found that Kx slightly increases (by about 2%) when the angle of fractures decreases from 90 to 50 degrees. The values of Ky reduce by about 21% when the angle of fractures decreases, indicating the permeability is dependent on the heterogeneous property of the block. The developed approach is used to investigate the effects of pressure drops on the equivalent permeability. It is found the values of the equivalent permeability are slightly influenced by the pressure drop values in the investigated ranges.
Keywords: Computational Fluid Dynamics (CFD)
fracture, equivalent permeability
hot dry rock
Description: 22nd National Conference of the Australian Society for Operations Research — ASOR 2013 DSTO led Defence Operations Research Symposium — DORS 2013
Rights: Copyright status unknown
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Appears in Collections:Aurora harvest 4
Mechanical Engineering conference papers

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