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Old   March 31, 2012, 02:18
Default Pessure BC case
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Hello everyone,

I have tried running my case with a pressure inlet BC, but it has just not even done the first iteration for past 15hrs.

The same case runs fine with velocity specified inlet.

I understand that pressure inlet is computationally complex.

But what should i do to make my case run with a pressure inlet?

Kindly reply asap.

Thanks
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Old   March 31, 2012, 04:03
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My simulation exited after 6 iterations. Saying "Floating point exception: overflow

any suggestions?
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Old   March 31, 2012, 07:18
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Search the forum. Floating point error has been discussed zillions of times.
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Old   April 1, 2012, 10:42
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Sijal Ahmed Memon (turboenginner@gmail.com)
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Could you describe your problem with some details. If possible please post some pics
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Old   April 1, 2012, 10:46
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Mine is a little complex internal flow system.

I tried the case with reduced relative total pressure at inlet, and the case is running.

any suggestions pl.?
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Old   April 4, 2012, 07:24
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As I said, this question has been asked a million times. I really shoudl write an FAQ on it one day.

Your simulation is numerically unstable. You need to improve the stability - improve mesh quality and smaller time steps (at least to start with) are the general approach to address it.
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Old   April 5, 2012, 10:18
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will try reducing the time step n improving mesh
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