منابع مشابه
An Unstructured-Grid, Parallel, Projection Solver for Computing Low-Speed Flows
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Gravity waves arise in gravitationally stratified compressible flows at low Mach and Froude numbers, and these waves impose a sharp restriction on the time step. This paper presents a filtering strategy for the fully compressible equations based on normal-mode analysis that is used throughout the simulation to compute the fast dynamics and is able to damp only chosen modes. This method is based...
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We consider the steady-state equations for a compressible uid. For low-speed ow, the system is sti because the ratio of the convective speed to the speed of sound is quite small. To overcome this di culty, we alter the time evolution of the equations but retain the same steady-state analytic equations. To achieve high numerical resolution, we also alter the arti cial viscosity of the numerical ...
متن کاملA finite element penalty-projection method for incompressible flows
The penalty–projection method for the solution of Navier–Stokes equations may be viewed as a projection scheme where an augmentation term is added in the first stage, namely the solution of the momentum balance equation, to constrain the divergence of the predicted velocity field. After a presentation of the scheme in the time semi-discrete formulation, then in fully discrete form for a finite ...
متن کاملA Parallel Adaptive Projection Method for Incompressible Two Phase Flows
Direct numerical simulation of high-density ratio multiphase flows requires a lot of computational resources. We have developed a parallel algorithm for solving the incompressible Navier-Stokes equation in two-phase flows on an adaptive hierarchy of mesh. The interface between the two fluids is treated by a coupled Level-Set/Ghost-Fluid method; the parallel AMR is handled by the PARAMESH packag...
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ژورنال
عنوان ژورنال: Journal of Computational Physics
سال: 1999
ISSN: 0021-9991
DOI: 10.1006/jcph.1998.6152