How to choose an equation of state in physical model

songkai · May 24, 2018, 10:48

Hello everyone,

now i am working with cycle of the flow simulation in cylinder chamber but i do not know which EOS should i choose for a mixing of air and fuel, the result of desity according to T, P i have with matlab done.

Thanks a lot

fluid23 · May 24, 2018, 13:27

You can use the user-defined EOS option when you define your physics continua. Then you just need to create a field function that has your EOS. Its a fairly easy process. The user manual has a good explanation. If a single equation is insufficient, you can always use the Table(T,P) function as well.

songkai · May 25, 2018, 15:37

Quote:

Originally Posted by fluid23

You can use the user-defined EOS option when you define your physics continua. Then you just need to create a field function that has your EOS. Its a fairly easy process. The user manual has a good explanation. If a single equation is insufficient, you can always use the Table(T,P) function as well.

Thanks a lot

i get it and have a try

May 24, 2018, 10:48	How to choose an equation of state in physical model	#1
songkai New Member Songkai Yang Join Date: Apr 2018 Posts: 22 Rep Power: 8	Hello everyone, now i am working with cycle of the flow simulation in cylinder chamber but i do not know which EOS should i choose for a mixing of air and fuel, the result of desity according to T, P i have with matlab done. Thanks a lot

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May 24, 2018, 13:27		#2
fluid23 Senior Member Matt Join Date: Aug 2014 Posts: 947 Rep Power: 17	You can use the user-defined EOS option when you define your physics continua. Then you just need to create a field function that has your EOS. Its a fairly easy process. The user manual has a good explanation. If a single equation is insufficient, you can always use the Table(T,P) function as well.