The Periodic Initial Value Problem and Initial Value Problem for the Modified Boussinesq Approximation

The Periodic Initial Value Problem and Initial Value Problem for the Modified Boussinesq Approximation

Year:    2002

Journal of Partial Differential Equations, Vol. 15 (2002), Iss. 2 : pp. 57–71

Abstract

The Boussinesq approximation, where the viscosity depends polynomially on the shear rate,finds more and more frequent use in geological practice. In this paper, we consider the periodic initial value problem and initial value problem for this modified Boussinesq approximation with the viscous part of the stress tensor τ^v = τ(e)- 2μΔe, where the nonlinear function τ(e) satisfies τ_{ij}(e)e_{ij} ≥ C|e|^p or τ_{ij}(e)e_{ij} ≥ C(|e|²+|e|^p). The existence, uniqueness and regularity of the weak solution is proved for p > \frac{2n}{n + 2}.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/2002-JPDE-5448

Journal of Partial Differential Equations, Vol. 15 (2002), Iss. 2 : pp. 57–71

Published online:    2002-01

AMS Subject Headings:   

Copyright:    COPYRIGHT: © Global Science Press

Pages:    15

Keywords:    non-Newtonian incompressible fluids