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starcd 3.24 has bugs?

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Old   May 13, 2008, 07:56
Default starcd 3.24 has bugs?
  #1
whitemelon
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I did a transient simulation of the exhaust system of engine by starcd 3.24, the negative density appeared when the first step was over.The time step is 2.7778e-5,the engine speed is 6000rpm,the mesh is all hexa by ICEMCFD.There's no effect on convergence by adjusting the relaxation factor and pressure correcter factor,I have no idea of changing the situation. But a strange sign occured when i used the star cd 3.15 for the simulation, the negative density disappeared, i don't know why?
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Old   May 14, 2008, 08:03
Default Re: starcd 3.24 has bugs?
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Will
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Try upgrading to the the latest verion (3.26 or 4.06) 3.24 is a few years old now
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Old   May 16, 2008, 00:42
Default Re: starcd 3.24 has bugs?
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whitemelon
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The problem also exist when i use starcd 3.26.
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Old   May 16, 2008, 01:47
Default Re: starcd 3.24 has bugs?
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Joern Beilke
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"switch 60 on"

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Old   May 16, 2008, 08:16
Default Re: starcd 3.24 has bugs?
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whitemelon
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"switch 60 on" ,wha't the mean?
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Old   May 16, 2008, 09:33
Default Re: starcd 3.24 has bugs?
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Joern Beilke
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Just enter the command into prostar an see if it works.

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Old   May 16, 2008, 10:44
Default Re: starcd 3.24 has bugs?
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whitemelon
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switch on 60,it doesn't work.
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