source term

zese · September 17, 2021, 03:24

Dear friends

I have a question about adding a source term to cfx. I want to amplify the flow by f=A*exp(w*t) where A is the amplitude and w is the frequency. there is no flow injection just some waves are added in two small regions. do you know how I can do that in either CFX or Fluent?

Best regards

ghorrocks · September 17, 2021, 07:19

You need to think about what physically realistic process could generate the effect you want, and then you develop a source term to implement that process.

So maybe applying a force per unit volume over a region, and the force oscillates? Or maybe a region of fluid with its displacement defined to oscillate? Or a plate in the flow which oscillates and moves the fluid?

September 17, 2021, 03:24	source term	#1
zese Senior Member Zese Join Date: Sep 2013 Posts: 102 Rep Power: 12	Dear friends I have a question about adding a source term to cfx. I want to amplify the flow by f=Aexp(wt) where A is the amplitude and w is the frequency. there is no flow injection just some waves are added in two small regions. do you know how I can do that in either CFX or Fluent? Best regards

September 17, 2021, 07:19		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	You need to think about what physically realistic process could generate the effect you want, and then you develop a source term to implement that process. So maybe applying a force per unit volume over a region, and the force oscillates? Or maybe a region of fluid with its displacement defined to oscillate? Or a plate in the flow which oscillates and moves the fluid? __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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