Why fluent active ENERGY model?

Sylnet · May 7, 2011, 13:26

Why when I use the Species model with species transport fluent active the energy model? I have a box with 2 inlet and 1 outlet. In to the 2 inlet I put 2 different fluid but with the same temperature. If i have 2 fluid with the same temperature i think that I don't need a Energy model!

Thankyou

litterfree · May 9, 2011, 04:49

when you use the Species model the energy equation will active automatically . if you do not want to solve the energy equation, you can deselect the energy equation in the "solution panel" .
or select "volume-weghted-mixing-law" algorithm for density in the "material panel" for mixture material

Sylnet · May 9, 2011, 06:27

Ok, thankyou! But if I have a energiy equation actived or not the option "volume-weghted-mixing-law" it's always actived. If I want to simulate a mixing of two different fluid with a same temperature in a box, is it important that to have a energy equation actived?

Thankyou

litterfree · May 9, 2011, 08:47

Quote:

Originally Posted by Sylnet

Ok, thankyou! But if I have a energiy equation actived or not the option "volume-weghted-mixing-law" it's always actived. If I want to simulate a mixing of two different fluid with a same temperature in a box, is it important that to have a energy equation actived?

Thankyou

i think, you are not need to solve the energy equation. so you can save some computation time and resouce

hope you can understand my words, my english is poor. i want to learn

May 7, 2011, 13:26	Why fluent active ENERGY model?	#1
Sylnet New Member Sylnet Join Date: May 2011 Posts: 5 Rep Power: 15	Why when I use the Species model with species transport fluent active the energy model? I have a box with 2 inlet and 1 outlet. In to the 2 inlet I put 2 different fluid but with the same temperature. If i have 2 fluid with the same temperature i think that I don't need a Energy model! Thankyou

May 9, 2011, 04:49		#2
litterfree New Member litter Join Date: May 2011 Posts: 17 Rep Power: 15	when you use the Species model the energy equation will active automatically . if you do not want to solve the energy equation, you can deselect the energy equation in the "solution panel" . or select "volume-weghted-mixing-law" algorithm for density in the "material panel" for mixture material __________________ never ever give up

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Use of k-epsilon and k-omega Models	Jade M	Main CFD Forum	40	January 27, 2023 08:18
Diff bet total energy & thermal energy model??	vijeshjoshi23	CFX	5	October 9, 2009 11:31
diff bet total energy model and thermal energy model??	vijeshjoshi23	Main CFD Forum	0	October 8, 2009 03:29
free sw to model ocean wave energy device?	Allen	Main CFD Forum	0	August 31, 2009 17:59
Why FVM for high-Re flows?	Zhong Lei	Main CFD Forum	23	May 14, 1999 14:22

May 9, 2011, 06:27		#3
Sylnet New Member Sylnet Join Date: May 2011 Posts: 5 Rep Power: 15	Ok, thankyou! But if I have a energiy equation actived or not the option "volume-weghted-mixing-law" it's always actived. If I want to simulate a mixing of two different fluid with a same temperature in a box, is it important that to have a energy equation actived? Thankyou