CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > CONVERGE

Problem with the MUSCL convective flux scheme solver

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 8, 2019, 13:22
Post Problem with the MUSCL convective flux scheme solver
  #1
New Member
 
Bartolomeo Fanizza
Join Date: Jun 2019
Posts: 4
Rep Power: 5
Bartholomew is on a distinguished road
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?
Thanks
Bartholomew is offline   Reply With Quote

Old   June 11, 2019, 09:59
Default
  #2
yli
Member
 
Yanheng Li
Join Date: Jan 2016
Location: Convergent Science, Madison WI
Posts: 33
Rep Power: 8
yli is on a distinguished road
Hi,

Can you send your problem and setup to support@convergecfd.com? So some of our support engineer will take a look at your setup. Thanks.
__________________
Yanheng Li
Research Engineer-Applications

CONVERGECFD
yli is offline   Reply With Quote

Old   July 3, 2019, 16:07
Default
  #3
New Member
 
kbansal's Avatar
 
Join Date: Dec 2015
Posts: 27
Rep Power: 8
kbansal is on a distinguished road
Hi,

Could you use MUSCL for both momentum and global? The current implementation of MUSCL requires that mom and global be consistent on numerical schemes.

Thanks,
__________________
Karan Bansal
Senior Research Engineer
CONVERGECFD
kbansal is offline   Reply With Quote

Reply

Tags
converge case setup, monotone, monotonicity preserving, muscl, supersonic

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ANSYS Meshing] Help with element size sandri_92 ANSYS Meshing & Geometry 14 November 14, 2018 07:54
Problem with an old Simulation FrankW CFX 3 February 8, 2016 04:28
Is there a problem in the Euler solver? Combas SU2 4 March 28, 2014 15:48
Godunov scheme Peter Main CFD Forum 6 November 27, 2009 10:51
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 04:05


All times are GMT -4. The time now is 10:20.