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March 23, 2000, 13:04 |
Divergence off the PPE.
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#1 |
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Can pressure Poisson equation (PPE) be used when computing unsteady incompressible flows, were there exist moving boundaries?
As I can see, when derive the PPE, taking divergence of NS-equations, the time dependent term du/dt cancels out as well as the diffusion term. Leaving only the convection terms behind for the source term in the PPE? As the time dependent term is expelled, where do I then calculate the unsteady pressure? And why is du/dt term then present in the Neumann boundary condition when solving the PPE? Grateful for an answer: Svante Hellzén |
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