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On pressure compatibility condition in numerical simulation of incompressible viscous flows using primitive variable formulation

  • Sundaresan S. 
  • S. M. Deshpande
Algorithms Incompressible Flows
Part of the Lecture Notes in Physics book series (LNP, volume 490)

Abstract

The numerical simulation of incompressible viscous flows using primitive variable formulation requires that the pressure be obtained by solving the pressure Poisson equation (PPE). It is mentioned in the literature on incompressible flows [1,2] that when all the pressure boundary conditions are of Neumann type, then the pressure compatibility condition (PCC) has to be satisfied for guaranteeing the existence of solution. The main aim of this paper is to show that the PCC is not an important issue as has been claimed in the literature [1–3]. On the other hand, it will be shown that the crucial issue, in numerical simulation of incompressible viscous flows, is to ensure solenoidality of the velocity field accurately. We will further show that the accuracy of solenoidality depends on the choice of pressure boundary conditions. The demonstration is based on the computation for 2-D lid-driven cavity problem for Re=100 on 1292 uniform grid.

Keywords

Pressure Boundary Condition Incompressible Viscous Flow Pressure Poisson Equation Boundary Scheme National Aerospace Laboratory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • Sundaresan S. 
    • 1
  • S. M. Deshpande
    • 1
  1. 1.CFD Laboratory, Center of Excellence in Aerospace CFD, Dept of Aerospace EngineeringIndian Institute of ScienceBangaloreIndia

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