simpleFoam, Solving Pressure problem

jamescraigie29 · October 13, 2013, 22:40

Hi All,

Im currently running a case using simpleFoam to analyse the flow over a helicopter fuselage.

There seems to be an issue when solving for pressure.
For example the initial residual =1 but the final residual also =1. Clearly there is something wrong and it takes a VERY long time to solve.

I have mainly used only simpleFoam and havent had this kind of issue before. Does anyone know what could be causing this? Could be something very simple?

Any advice would be appreciated.

Regards,

James.

ARTem · October 14, 2013, 05:05

Hello, James.
Can you give more details about your case (i.e. boundary conditions)?

Maimouna · October 15, 2013, 08:42

Dear,

I have one question about paraView window 3.12.0. It is working properly, but the Apply icon is not activated?
Whats the problem?
What shall I do to activate it?

Best regards
Maimouna

RodriguezFatz · October 15, 2013, 08:55

James, that sounds like your pressure equation doesn't converge and takes the maximum number of iterations ("maxIter" in fvSolution) to try ("VERY long time to solve."). Did you change something in your fvSolution file?

October 13, 2013, 22:40	simpleFoam, Solving Pressure problem	#1
jamescraigie29 New Member James Join Date: Oct 2013 Posts: 1 Rep Power: 0	Hi All, Im currently running a case using simpleFoam to analyse the flow over a helicopter fuselage. There seems to be an issue when solving for pressure. For example the initial residual =1 but the final residual also =1. Clearly there is something wrong and it takes a VERY long time to solve. I have mainly used only simpleFoam and havent had this kind of issue before. Does anyone know what could be causing this? Could be something very simple? Any advice would be appreciated. Regards, James.

October 15, 2013, 08:42	ParaView window	#3
Maimouna Senior Member ok Join Date: Oct 2013 Posts: 346 Rep Power: 14	Dear, I have one question about paraView window 3.12.0. It is working properly, but the Apply icon is not activated? Whats the problem? What shall I do to activate it? Best regards Maimouna

October 15, 2013, 08:55		#4
RodriguezFatz Senior Member Philipp Join Date: Jun 2011 Location: Germany Posts: 1,297 Rep Power: 27	James, that sounds like your pressure equation doesn't converge and takes the maximum number of iterations ("maxIter" in fvSolution) to try ("VERY long time to solve."). Did you change something in your fvSolution file? __________________ The skeleton ran out of shampoo in the shower.

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October 14, 2013, 05:05		#2
ARTem Member Artem Shaklein Join Date: Feb 2010 Location: Russia, Izhevsk Posts: 43 Rep Power: 16	Hello, James. Can you give more details about your case (i.e. boundary conditions)?