Transmissivity Averaging in Fracture Flow on Self-affine Linear Profiles: Arithmetic, Harmonic, and Beyond
Alexandre Lavrov
Abstract:Numerical modeling of unidirectional flow in self-affine fractures using the lubrication approximation requires averaging of the transmissivity between the nodes. Seven averaging techniques are reviewed: arithmetic averaging of transmissivity; harmonic averaging of transmissivity; two averaging techniques derived by cell-based collocation method; global reconstruction of profile by means of multiquadrics; arithmetic averaging of aperture; harmonic averaging of aperture. In order to evaluate the performance of … Show more
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