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October 16, 2017, 14:19 |
Problem to solve T8 cascade test
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#1 |
New Member
Ana Adalgiza
Join Date: May 2013
Posts: 2
Rep Power: 0 |
Hello, I'm trying simulate a T8 cascade test in Fluent, but the shock wave is dissipating in fluid who causes the maximum Mach number lower than expected.
The boundary conditions who i used are: -Inviscid flow; -Energy is on; -Steady state; -Pressure inlet: 43.842 Pa; -Temperature: 292 K; -Pressure outlet: 23.080 Pa; -Periodicity in the blade channel; -Operating Conditions: 0 Pa. In the solver i used density-based, in the solution method i tried to use implicit-AUSM. The spatial discretization in gradient is setted as Least squares cell based. Initially, i run calculation to the flow as first order upwind and when the solution is converged i changed that to the second order. The mesh was checked and the quality is ok! I used the same mesh and case to an in-house program (this program is validated) and i obtained a good resolution of shock wave. Can someone help me? Thanks everyone, Ana |
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October 17, 2017, 03:46 |
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#2 |
Member
Jaesan Yoon
Join Date: Sep 2017
Posts: 36
Rep Power: 9 |
picture might be help to figure out problem.
did you use same mesh for the two solvers? how about adapt mesh near shockwave |
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October 19, 2017, 21:36 |
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#3 |
New Member
Ana Adalgiza
Join Date: May 2013
Posts: 2
Rep Power: 0 |
I'm working as a Turbine. I used the same mesh in both solver. I did not try to use the adaptative mesh.
In picture shown what is happening. |
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Tags |
euler, resolution, shock wave |
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