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Problem with the MUSCL convective flux scheme solver

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Old   June 8, 2019, 14:22
Post Problem with the MUSCL convective flux scheme solver
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Bartolomeo Fanizza
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Hi everyone,

I started to use converge studio some weeks ago. I'm studying the example case of the supersonic channel and i found a problem with the MUSCL solver. I setted the solver parameters in MUSCL reconstructured central difference and step as a flux limiters (STEP limiter tolerance setted in 1e-5).

The problem is the solution of the shock in the channel doesn't look monotone. I plotted the Mach number contour on tecplot and the shock zone looks indented and not clear as it should be. Then i plotted the pressure values on the lower wall of the channel on Matlab and the graphic is characterized by anomaouls fluctuations.

I setted another case with the flux blending (default) scheme and first order upwind and the solution of the mach number and the pressure is right so i thounght i'm not setting the MUSCL scheme in the right way. Can anyone help me to know better about the setting of this scheme on Converge Studio?
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Old   June 11, 2019, 10:59
Yanheng Li
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Can you send your problem and setup to So some of our support engineer will take a look at your setup. Thanks.
Yanheng Li
Research Engineer-Applications

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Old   July 3, 2019, 17:07
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Could you use MUSCL for both momentum and global? The current implementation of MUSCL requires that mom and global be consistent on numerical schemes.

Karan Bansal
Senior Research Engineer
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converge case setup, monotone, monotonicity preserving, muscl, supersonic

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