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Nondimensionalization in FIDAP

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Old   August 9, 2007, 21:53
Default Nondimensionalization in FIDAP
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I am trying to solve a fluid flow problem associated with laser wel melt pool. Problem includes a fixed free surface, heat flux input. BUOYANCY feature is used, density is specified in Bousinesq form. The problem has a very poor convergence behaviour so I decided to use nondimensionalization. However, now the solver crashes without even trying solving. I checked all the values they seem ok. Reynolds number is around 4 and Prandtl is around .25 for the referans values I used.

Any help will be appreciated.


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Old   August 16, 2007, 10:33
Default Re: Nondimensionalization in FIDAP
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it seems like one of the referans values were way too high so I corrected it and now it runs. But the results I am getting are very different from the ones in the dimensional form. In fact, they are not even close. Any ideas? I used (b) set of equations as mentioned in the nondimensionalization chapter of fidap manual.

thank you...
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