simpleFoam & pimpleDyMFoam jump on fields

student666 · September 17, 2014, 23:03

Hi all,

I ran the same case with different solvers, it's similar to the 2Dmixervessel tutorial, but 3D.

To obtain the mesh, I merged stator and rotor cellZones and defined AMI patches at interface.

I ran once using pimpleDyMFoam and I had pressure and velocity field with no jump across AMI interfaces.
If I run the case using simpleFoam with fvOptions, I see a jump on both fields across the surface. Why? Is there a way to smooth this?

Here's a picture of the simpleFoam case.

https://www.dropbox.com/s/r0lupkk4buqkwof/p.png?dl=0

student666 · September 17, 2014, 23:07

here's the log file of the simpleFoam case

https://www.dropbox.com/s/5dx0hgl9kl...n.logfile?dl=0

student666 · September 18, 2014, 14:31

Problem solved, when you use simpleFoam with fvOptions you have not to forget the not rotating patches into dictionary.

That's the reason of the jump.

Hope this help.

September 17, 2014, 23:03	simpleFoam & pimpleDyMFoam jump on fields	#1
student666 Senior Member M. C. Join Date: May 2013 Location: Italy Posts: 286 Blog Entries: 6 Rep Power: 16	Hi all, I ran the same case with different solvers, it's similar to the 2Dmixervessel tutorial, but 3D. To obtain the mesh, I merged stator and rotor cellZones and defined AMI patches at interface. I ran once using pimpleDyMFoam and I had pressure and velocity field with no jump across AMI interfaces. If I run the case using simpleFoam with fvOptions, I see a jump on both fields across the surface. Why? Is there a way to smooth this? Here's a picture of the simpleFoam case. https://www.dropbox.com/s/r0lupkk4buqkwof/p.png?dl=0

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September 17, 2014, 23:07		#2
student666 Senior Member M. C. Join Date: May 2013 Location: Italy Posts: 286 Blog Entries: 6 Rep Power: 16	here's the log file of the simpleFoam case https://www.dropbox.com/s/5dx0hgl9kl...n.logfile?dl=0

September 18, 2014, 14:31		#3
student666 Senior Member M. C. Join Date: May 2013 Location: Italy Posts: 286 Blog Entries: 6 Rep Power: 16	Problem solved, when you use simpleFoam with fvOptions you have not to forget the not rotating patches into dictionary. That's the reason of the jump. Hope this help.