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Help Solving 3D Unsteady NS Eqns for Flapping Wing
Posted Mon April 25, 2005 @10:53PM
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Help Desk quarkz writes "Hi,

My colleages and I (research students) are thinking of solving the unsteady incompressible 3D NS eqns codes to model flapping wings. Hence, the boundary will be moving. We've been looking thru many schemes and we need some opinons...

  1. Projection or fractional or artificial compress, SIMPLER which is more suitable? We're a bit confused.
  2. 2nd order crank Nicolson or backward Euler for time discretization?
  3. How to move the boundary? What we know is to rotate the whole grids, suggested by Liu & Kawachi. Is there a better solution?
  4. We'll be using structured grids. Is it better to write ourselves or get a ready program? Is it efficient to generate 2d grids and stacked them together?

Sorry for asking so many questions. Anyway, thanks in advance!"


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