Same BC with different mesh

chencw · January 29, 2018, 01:51

Hi everyone,

I'm working on supersonic nozzle by sonicfoam. When I used a simple geometry, everything works well. However, when I switch to a complex geometry with same BC, many problems happened in first few steps like negative temperature or PBICG has failed to converge within the maximum number of iterations 1000.

Anyone know what's wrong with it? My idea is that maybe my BC is non-physical in new geometry?

Thanks,
chencw

luther1990 · January 29, 2018, 22:42

Check the mesh quality. If it is low, you need to lower the discretization scheme.

January 29, 2018, 01:51	Same BC with different mesh	#1
chencw New Member Join Date: Dec 2017 Posts: 12 Rep Power: 8	Hi everyone, I'm working on supersonic nozzle by sonicfoam. When I used a simple geometry, everything works well. However, when I switch to a complex geometry with same BC, many problems happened in first few steps like negative temperature or PBICG has failed to converge within the maximum number of iterations 1000. Anyone know what's wrong with it? My idea is that maybe my BC is non-physical in new geometry? Thanks, chencw

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
sliding mesh problem in CFX	Saima	CFX	46	September 11, 2021 08:38
Star CCM Overset Mesh Error (Rotating Turbine)	thezack	Siemens	7	October 12, 2016 12:14
[ICEM] surface mesh merging problem	everest	ANSYS Meshing & Geometry	44	April 14, 2016 07:41
[ICEM] Problem making structural mesh on a surface	froztbear	ANSYS Meshing & Geometry	1	November 10, 2011 09:52
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere!	sc298	OpenFOAM Meshing & Mesh Conversion	2	March 27, 2011 22:11

January 29, 2018, 22:42		#2
luther1990 New Member Yuncheng Xu (Cloud) Join Date: May 2011 Location: State College, PA Posts: 20 Rep Power: 15	Check the mesh quality. If it is low, you need to lower the discretization scheme.