Summary
A new finite-difference scheme for the incompressible Navier-Stokes equations in two space dimensions is formulated. This scheme uses the velocity vector and the pressure gradients as dependent variables. A Multi-Grid scheme for the system of equations is proposed. The algebraic convergence rate of the new (PGA-MG) scheme is compared to the convergence of the (DGS-MG) scheme of Brandt and Dinar [1]. As test problems we use either a smooth test case, the flow in a driven cavity or the flow in a separator model.These problems represent flows with decreasing order of smoothness. It was found that the new PGA-MG scheme has a good convergence rate even for those Reynolds numbers for which the DGS-MG scheme is unstable.
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References
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© 1984 Springer Fachmedien Wiesbaden
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Fuchs, L. (1984). Multi-Grid Schemes for Incompressible Flows. In: Hackbusch, W. (eds) Efficient Solutions of Elliptic Systems. Notes on Numerical Fluid Mechanics, vol 10. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-663-14169-3_4
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DOI: https://doi.org/10.1007/978-3-663-14169-3_4
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
Print ISBN: 978-3-528-08084-6
Online ISBN: 978-3-663-14169-3
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