Decoupled spectral element methods for steady viscoelastic flow past a sphere
نویسندگان
چکیده
A spectral element method is described for the flow of a viscoelastic fluid past a sphere in a tube. An approximate Jacobian is used to solve the system of nonlinear algebraic equations derived from the spectral element discretization as a cost-effective alternative to the full Newton method. The linearized equations are solved using a preconditioned generalised minimal residual (GMRES) method. Numerical results showing the behaviour of the drag on the sphere as a function of the elasticity of the fluid are presented. A comparison with other methods is made and shows good agreement with the results of the proposed method.
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