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March 26, 2007, 12:34 |
overspecified or sufficiently specified ?
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I have 2 questions. The first is basically aimed at any CFD solution process, whilst the second is for Phoenics.
I have a domain with some objects within it. At the left and right end I set an inlet and an outlet, both of the same size. I want to solve an incompressible steady state fluid flow. If I set these following conditions : 1. The pressure at the inlet (Pin) and at outlet (Pout) are fixed. 2. The velocity at the inlet (Vin) and at outlet (Vout) are the same (Vin = Vout). I don't fix the value, I just want the convergent velocity will give me the condition Vin = Vout. Question-1 : Is this problem feasible to solve in Phoenics ? Algebraically speaking, we have some available equations : 1. momentum equation 2. continuity equation 3. Pin = fixed 4. Pout = fixed 5. Vin = Vout Is this sufficiently specified or overspecified ? Question-2 : Can you suggest me how to set this kind of problem in Phoenics ? I don't know exactly how to set a periodic boundary condition Vin = Vout in Phoenics. |
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