rho

jwang1_09 · November 14, 2013, 05:28

Hello everyone,
Could you tell me the meaning of rho,Sens_Geo and Sens_Mach? After completing the adjoint compute,I use the Tecplot software to ppen the results,there are many options including Diss_wish,PsiE,PsiRho,Psi_X?

Thanks for your help!

economon · November 19, 2013, 17:09

Hi,

The adjoint state contains variables that corresponds to each of the conserved variables in the flow problem, i.e. an Adjoint Density (PsiRho) corresponds to the fluid Density (Rho), etc. The Sens_Geo parameter is an integrated measure of the geometric sensitivity to a particular objective function on the entire surface of interest, which is similar to an integrated force coefficient in the flow problem, for instance. We often use this as part of the Cauchy criteria to evaluate convergence.

Hope this helps,
Tom

November 14, 2013, 05:28	rho	#1
jwang1_09 Member wangjian Join Date: Nov 2013 Posts: 54 Rep Power: 12	Hello everyone, Could you tell me the meaning of rho,Sens_Geo and Sens_Mach? After completing the adjoint compute,I use the Tecplot software to ppen the results,there are many options including Diss_wish,PsiE,PsiRho,Psi_X? Thanks for your help!

November 19, 2013, 17:09		#2
economon Super Moderator Thomas D. Economon Join Date: Jan 2013 Location: Stanford, CA Posts: 271 Rep Power: 14	Hi, The adjoint state contains variables that corresponds to each of the conserved variables in the flow problem, i.e. an Adjoint Density (PsiRho) corresponds to the fluid Density (Rho), etc. The Sens_Geo parameter is an integrated measure of the geometric sensitivity to a particular objective function on the entire surface of interest, which is similar to an integrated force coefficient in the flow problem, for instance. We often use this as part of the Cauchy criteria to evaluate convergence. Hope this helps, Tom akun646, mlooti and Kaizhi Ding like this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
print stack error	CFT	OpenFOAM	7	May 14, 2016 12:31
writing execFlowFunctionObjects	immortality	OpenFOAM Post-Processing	30	September 15, 2013 06:16
what does this verbose error mean?	immortality	OpenFOAM Running, Solving & CFD	1	February 6, 2013 16:47
pisoFoam with k-epsilon turb blows up - Some questions	Heroic	OpenFOAM Running, Solving & CFD	26	December 17, 2012 03:34
Error log	vw.cfd	OpenFOAM	6	August 7, 2009 05:44