Least-squares hp/spectral element method for three dimensional Stokes equations
Applied Numerical Mathematics(2016)
Abstract
In this paper we propose a non-conforming least squares spectral element method for Stokes equations on three dimensional domains. Any kind of first order transformation has been avoided by using a block diagonal preconditioner for velocity and pressure variables. Preconditioned conjugate gradient method is used to obtain the numerical solution. The method is proved to be exponentially accurate. Numerical results are provided to validate the proposed estimates.
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Key words
Least-squares methods,Stokes equations,Preconditioner,Exponential accuracy
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