Entropy contours

m5m5kh · September 22, 2013, 02:01

hi dear Foamers
I simulated my case as a porous medium with porousSimpleFoam just adding an energy equation to it.
I got the data of U and T. I decided to present entropy generation either.
what should I do for plotting entropy just by T and U data?
Is there any solver for this case or not?

please help me in this case

best regards
Mohsen

wyldckat · September 22, 2013, 13:14

Hi Mohsen,

AFAIK, OpenFOAM only provides entropy calculations for simulations that use the thermodynamics modelling part of OpenFOAM.
Here's a thread on this topic: http://www.cfd-online.com/Forums/ope...-openfoam.html

Best regards,
Bruno

m5m5kh · September 25, 2013, 15:13

Ok!
what sould I do now ?

do you have any suggestion Bruno?

wyldckat · September 27, 2013, 18:49

Hi Mohsen,

I see that you've begun approaching the possible solution here: http://www.cfd-online.com/Forums/ope...eneration.html

It's essentially what I was going to ask and suggest, namely:

You wrote in your first post that you had added the energy equation to the solver, but you didn't specify how exactly you added said equation.
In other words: if you added a specific energy equation that does not rely on OpenFOAM's thermodynamics, then you have to implement your own entropy equation as well.

I'll try to give some basic help on your other thread.

Best regards,
Bruno

September 22, 2013, 02:01	Entropy contours	#1
m5m5kh Senior Member mohsen kh Join Date: Jan 2013 Location: Iran Posts: 125 Rep Power: 14	hi dear Foamers I simulated my case as a porous medium with porousSimpleFoam just adding an energy equation to it. I got the data of U and T. I decided to present entropy generation either. what should I do for plotting entropy just by T and U data? Is there any solver for this case or not? please help me in this case best regards Mohsen

September 22, 2013, 13:14		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Hi Mohsen, AFAIK, OpenFOAM only provides entropy calculations for simulations that use the thermodynamics modelling part of OpenFOAM. Here's a thread on this topic: http://www.cfd-online.com/Forums/ope...-openfoam.html Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

September 27, 2013, 18:49		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Hi Mohsen, I see that you've begun approaching the possible solution here: http://www.cfd-online.com/Forums/ope...eneration.html It's essentially what I was going to ask and suggest, namely: You wrote in your first post that you had added the energy equation to the solver, but you didn't specify how exactly you added said equation. In other words: if you added a specific energy equation that does not rely on OpenFOAM's thermodynamics, then you have to implement your own entropy equation as well. I'll try to give some basic help on your other thread. Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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September 25, 2013, 15:13		#3
m5m5kh Senior Member mohsen kh Join Date: Jan 2013 Location: Iran Posts: 125 Rep Power: 14	Ok! what sould I do now ? do you have any suggestion Bruno?