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August 12, 2010, 05:53 |
thermo model - where is R() defined?
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#1 |
New Member
Olivier Macchion
Join Date: Jun 2010
Posts: 12
Rep Power: 16 |
Hello
I am writing a new thermo class to model the mixture of two gases, for example air (itself a mixture) and methane. I think I have understood how to define it, but I have trouble understanding how to link the scalar used to transport the methane specie, called Y in the 0 directory, to the properties of the methane specie defined in the thermophysicalProperties file. What I have done is the following: 1) Added the following makeBasicMixture ( multiComponentMixture, constTransport, hConstThermo, perfectGas ); to the file basicMixtures.C 2) Added the following Y_ ( IOobject ( “Y”, mesh.time().timeName(), mesh, IOobject::MUST_READ, IOobject::AUTO_WRITE ), mesh ), to the file basicThermo.C 3) Created a new perfectGas directory, called speciesPerfectGas, and changed the calculation of psi to the following: inline scalar speciesPerfectGas:si(scalar, scalar T, scalar Y) const { return 1.0/((R()*(1-Y) + R_Y*Y)*T); } I have tried to find where R() is calculated, to know how to define R_Y in the previous code, but I can't find it. Would someone know that please? Is there an example of multiComponentMixture somewhere? Cheers Olivier Last edited by OMN; August 12, 2010 at 07:37. |
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August 18, 2010, 04:07 |
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#2 |
Senior Member
Christian Lucas
Join Date: Aug 2009
Location: Braunschweig, Germany
Posts: 202
Rep Power: 18 |
Hi,
have a look at the class specie in the folder "thermophysicalModels/specie/specie" Regards, Christian |
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August 18, 2010, 05:31 |
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#3 |
New Member
Olivier Macchion
Join Date: Jun 2010
Posts: 12
Rep Power: 16 |
Thank you Christian!
Cheers Olivier |
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June 21, 2011, 21:08 |
multiComponentMixture
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#4 |
Member
Jim Carow
Join Date: Apr 2010
Location: Michigan, USA
Posts: 41
Rep Power: 16 |
Hello Olivier,
I am working on a similar feature. Would you be willing to share your implementation? thank you and best regards, James |
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June 24, 2011, 02:43 |
implementation
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#5 |
New Member
Olivier Macchion
Join Date: Jun 2010
Posts: 12
Rep Power: 16 |
Yes of course James.
Have you got an email? regards Olivier |
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June 24, 2011, 08:45 |
implementation
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#6 |
Member
Jim Carow
Join Date: Apr 2010
Location: Michigan, USA
Posts: 41
Rep Power: 16 |
My email is:
james dot p dot carow at wmich dot edu Thank you Olivier and have a good weekend! James |
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Tags |
mixture of gases, modeling, psi, thermophysical |
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