Internal Energy in Fluent

ymoucha · February 10, 2014, 11:17

Hi everybody,

Can any one help with the internal energy? how does Fluent calculate it? i am filling a 100L PCM tank with cold water through heat exchangers, the issue is that the calculated gained energy: $\int$ (mCp delta T) dt dosen't match with the internal energy of the tank calculated by Fluent!!

Could any one help please??

cfdivan · February 11, 2014, 05:07

Hi Yo,

Are you sure that the internal energy in Fluent means exactly the same that you are looking for? Find out on user guide the definition equation for internal energy.

Regards,

February 10, 2014, 11:17	Internal Energy in Fluent	#1
ymoucha New Member Yo Join Date: Mar 2010 Posts: 2 Rep Power: 0	Hi everybody, Can any one help with the internal energy? how does Fluent calculate it? i am filling a 100L PCM tank with cold water through heat exchangers, the issue is that the calculated gained energy: $\int$ (mCp delta T) dt dosen't match with the internal energy of the tank calculated by Fluent!! Could any one help please??

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February 11, 2014, 05:07		#2
cfdivan Member Join Date: Jun 2011 Posts: 51 Rep Power: 15	Hi Yo, Are you sure that the internal energy in Fluent means exactly the same that you are looking for? Find out on user guide the definition equation for internal energy. Regards,