DSMC Foam - HArd Sphere Model
I am new to OPENFOAM and i learning it through the tutorials .. I wish i could program by myself for different kind of flow problems .
In DSMCFOAM solver tutorials , for wedge15
// Wall Interaction Model
// Binary Collision Model
If i wanted to change this model to Hard sphere model , what should i do ? ,
Also if i wanted to change the wall interaction model , what should i do ?
I understand that i should program the necessary model in the solver folder inside the installation directory ??? :confused::confused:
It will be great if some one help me out in this ..
Hi archeoptyrx !
First of all, you should look at the other submodels that are already implemented for dsmcFoam, they are in the $FOAM_SRC/lagrangian/dsmc/submodels folder.
If one of them suits you, just change the entry in your dmscProperties dictionnary, for instance :
If you really need to add a new model, it will be more complicated.
See the following tutorial that can give you a few hints :
Good luck on that,
Yes I got it . But how do i find the constants that has to be included with this ? .. eg
Binary collison model LArsonbarognke .......
what i should include here ? . How do i find the constants for this model ?
Is it same from the G A Bird book ??? Should i happen to give all the constants that is specified for this model in the book ??
Thanks for the help
As I said, you should take a look at the submodel's source code located in the folder :
For instance, for your specific example : if you look at the "LarsenBorgnakkeVariableHardSphere.C" source file, you will notice these lines in the constructor of this class :
I hope it will help, do not hesitate to look inside the source code and/or to run cases and analyse the output errors.
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