Transonic flow, 2D compressor blade

DOP · August 15, 2022, 12:17

Hi all,
I am trying to calculate transonic flow around the 2D compressor blade. And i'm stuck: solver crashing or solution don't convergence. I tried roSimpleFoam and roPimpleFoam. Are there better solvers for such type of transonic flow? I will also be grateful if someone can share experience in calculating the transonic flow in a compressor using standard OpenFOAM solvers.

dlahaye · August 15, 2022, 12:33

Convergence of rhoS/PimpleFoam is indeed delicate.

We found boundary condition settings crucial.

How are you setting boundary conditions for pressure, density and temperature on the inlet and outlet patches?

DOP · August 18, 2022, 04:37

Hello, Domenico
Thank you for your reply and a fresh look at the problem. I changed the fixed values BC to total pressure and velocity direction and now everything works. I jast tried to get solution for stall rigion. This is validation case so i will share results when will get.

dlahaye · August 18, 2022, 07:02

Wonderful! Well done! I look forward to seeing your results.

August 15, 2022, 12:17	Transonic flow, 2D compressor blade	#1
DOP New Member Panov Dmitrii Join Date: Jan 2013 Posts: 4 Rep Power: 13	Hi all, I am trying to calculate transonic flow around the 2D compressor blade. And i'm stuck: solver crashing or solution don't convergence. I tried roSimpleFoam and roPimpleFoam. Are there better solvers for such type of transonic flow? I will also be grateful if someone can share experience in calculating the transonic flow in a compressor using standard OpenFOAM solvers.

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August 15, 2022, 12:33		#2
dlahaye Senior Member Domenico Lahaye Join Date: Dec 2013 Posts: 723 Blog Entries: 1 Rep Power: 17	Convergence of rhoS/PimpleFoam is indeed delicate. We found boundary condition settings crucial. How are you setting boundary conditions for pressure, density and temperature on the inlet and outlet patches?

August 18, 2022, 04:37		#3
DOP New Member Panov Dmitrii Join Date: Jan 2013 Posts: 4 Rep Power: 13	Hello, Domenico Thank you for your reply and a fresh look at the problem. I changed the fixed values BC to total pressure and velocity direction and now everything works. I jast tried to get solution for stall rigion. This is validation case so i will share results when will get.

August 18, 2022, 07:02		#4
dlahaye Senior Member Domenico Lahaye Join Date: Dec 2013 Posts: 723 Blog Entries: 1 Rep Power: 17	Wonderful! Well done! I look forward to seeing your results.