mass convergency problem

c120613 · May 25, 2010, 06:16

Dear all,

I'm running simulations for rotor 37 but I have the convergence problem in particular related with the mass equations RMS. The other residuals seem okay.

Do you have an idea which parameter I have to vary in order to have the convergency.

The simulations are run in steady conditions where the blade turns at -1800 RPM and the shroud turns at +1800 RPM. The value of the mass flow is equal around 0,57 kg/sec per passage.

Please let me know how I can fix this problem and if you need some other numerical details let me know as well.

Kind regards

DD

ghorrocks · May 25, 2010, 07:20

Have you read in the documentation about obtaining convergence? Also have a look at the FAQ in this forum (http://www.cfd-online.com/Wiki/Ansys_FAQ).

May 25, 2010, 06:16	mass convergency problem	#1
c120613 Member Domenico Join Date: Sep 2009 Location: Cranfield Posts: 48 Rep Power: 16	Dear all, I'm running simulations for rotor 37 but I have the convergence problem in particular related with the mass equations RMS. The other residuals seem okay. Do you have an idea which parameter I have to vary in order to have the convergency. The simulations are run in steady conditions where the blade turns at -1800 RPM and the shroud turns at +1800 RPM. The value of the mass flow is equal around 0,57 kg/sec per passage. Please let me know how I can fix this problem and if you need some other numerical details let me know as well. Kind regards DD

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May 25, 2010, 07:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Have you read in the documentation about obtaining convergence? Also have a look at the FAQ in this forum (http://www.cfd-online.com/Wiki/Ansys_FAQ).