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April 5, 2005, 14:59 |
Time step in time explicit solver
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#1 |
Guest
Posts: n/a
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I know that Fluent chooses the time step (in an unsteady explicit model) as: CFL Dx /(u+a). But what is exactly Dx? The help says it is the local grid size. What does it mean? Consider that I have a quadrilateral 2D mesh, is it the diagonal? the biggest dimension? To anyone that can help me...Thank you
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August 5, 2009, 11:32 |
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#2 |
Senior Member
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The dx is the minimum of cell size
cheers |
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