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Título

Preconditioned Navier-Stokes schemes from the generalised lattice Boltzmann equation

AutorIzquierdo, Salvador; Fueyo, Norberto
Fecha de publicación2008
EditorInderscience Publishers
CitaciónProgress in Computational Fluid Dynamics 8: 189-196 (2008)
ResumenPreconditioning of Navier-Stokes equations is a widely used technique to speed up Computational Fluid Dynamics simulations of steady flows. In this work a systematic study is performed of time-derivative preconditioners of Navier-Stokes equations that can be derived from the generalised lattice Boltzmann equation. In this way, lattice Boltzmann models equivalent to preconditioned Navier-Stokes systems are constructed, and it becomes possible to take advantage of the knowledge generated in this field to improve the convergence to steady state of lattice-Boltzmann flow-calculations. Two different preconditioners are obtained, which are analysed according to their condition numbers and compared with typical Navier-Stokes preconditioners. Copyright © 2008, Inderscience Publishers.
URIhttp://hdl.handle.net/10261/50891
DOI10.1504/PCFD.2008.018089
Identificadoresdoi: 10.1504/PCFD.2008.018089
issn: 1468-4349
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