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How to use "densit.f" for multicomponent case?

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Old   March 3, 2004, 03:30
Default How to use "densit.f" for multicomponent case?
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BK
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Hi, everybody. My case is transient, 3 scalars(active), compressible problem. As I know, "Ideal f(T,P)" option is not valid in my case. And "Multicomponent" option is not valid because the background gas density is constant. So I determined using user subroutine("densit.f"). How do I code this subroutine?
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Old   March 3, 2004, 04:15
Default Re: How to use "densit.f" for multicomponent case?
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Richard
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If your fluid is a mixture of active scalars (and perhaps a background fluid), and each scalar behaves as an ideal gas, then the correct option for density is "Ideal f(T,p)". Look at equation (1-35) of the v3.15 Methodology Manual - "Ideal gases or mixtures thereof". You don't need to use densit.f.
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Old   March 3, 2004, 08:06
Default Re: How to use "densit.f" for multicomponent case?
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BK
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Thank you very much, Richard.
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