CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

Dynamic moving mesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 5, 2008, 17:14
Default Hi Paul, I think we should
  #61
New Member
 
Jan Goebel
Join Date: Mar 2009
Location: Mannheim, Baden Wuerttemberg, Germany
Posts: 24
Rep Power: 8
jango is on a distinguished road
Hi Paul,

I think we should check out the case on monday. Maybe you should change the time step (because of the time step continuity errors), let`s check all data and compare it to the Fluent- case.
Great job, so far, I know this case is a little complicated ;-)

greetz,

Jan

P.S.:Have a nice weekend
jango is offline   Reply With Quote

Old   June 12, 2008, 11:26
Default Hi Paul & Jan I wanted to a
  #62
Member
 
David Hora
Join Date: Mar 2009
Location: Zürich, Switzerland
Posts: 63
Rep Power: 8
david is on a distinguished road
Hi Paul & Jan

I wanted to ask if you have found a solution in the meantime. I'm having a similar problem with stitchMesh which is basically a static sliding interface.

I want to simulate an impeller with MRFSimpleFOAM. My mesh consists of 3 parts (InletTube, Impeller and Volute) which were merged into one case. I'm using OpenFOAM-1.4.1-dev from powerlab and was able to stitch the mesh between InletTube and Impeller. Unfortunately I get the following error message when I try to stitch the mesh between Impeller and Volute:


Create mesh for time = 0

Coupling patches IMPELLEROUTLET and VOLUTEINLET
Resulting (internal) faces will be in faceZone IMPELLEROUTLETVOLUTEINLETCutFaceZone

Note: the overall area covered by both patches should be identical ("integral" interface).
If this is not the case use the -partial option

Adding point and face zones
Reading all current volfields


--> FOAM FATAL ERROR : Cannot determine best atan point. Doing face: 6(1772575 1772576 2344107 2335573 2335572 2344108) Cur point: 2336994 Next points: 3(2336995 322249 322274)

From function void enrichedPatch::calcCutFaces() const
in file slidingInterface/enrichedPatch/enrichedPatchCutFaces.C at line 277.

FOAM aborting


Regards
david
david is offline   Reply With Quote

Old   September 22, 2009, 13:59
Default
  #63
Member
 
Gautami Erukulla
Join Date: Mar 2009
Posts: 40
Rep Power: 8
gautami is on a distinguished road
Hello,

I am using OpenfOAM 1-5 on linux suse 10.3.

I could successfully execute the movingCone case in icoDyMFoam. And now I am trying to implement the same on a rectangular domain with four sides:-inletwall outletwall topwall and bottomwall.
I am trying to move the inlet wall with a constant velocity.But after running the case when I see the results the inlet wall moves and as it moves it compresses by domain.
My computational domain gets compressed and reduces in size.
Can someone please guide me.

Thank you,
Gautami.
gautami is offline   Reply With Quote

Old   December 30, 2010, 13:32
Default Cannot Determine Best Atan Point
  #64
New Member
 
Nadeem
Join Date: Mar 2009
Location: München, Bavarian, Deutschland
Posts: 24
Rep Power: 8
ubaid is on a distinguished road
Hello Everybody,

I am trying to rotate a wheel inside a room. To deal with motion, i am using slidingInterface and icoDyMFoam solver.

But unfortunately i am stuck to a problem at the very beginning of the simulation and the is the following one.


Cannot determine best atan point. Doing face: 8(1859704 1859968 1859701 1859967 16123 16130 1859969 1859970) Cur point: 1859970 Next points: 4(1859704 1859969 1859968 585674)

From function void enrichedPatch::calcCutFaces() const
in file polyMeshModifiers/slidingInterface/enrichedPatch/enrichedPatchCutFaces.C at line 277.

FOAM aborting

I tried to grasp at the code but still dint understand it. Can anyone please let me know, how could I handle this case. There is a problem with my mesh or with something else.

Best Regards,
Ubaid
ubaid is offline   Reply With Quote

Old   June 7, 2012, 10:04
Default
  #65
Member
 
Nick
Join Date: Nov 2011
Location: Tongji University,Shanghai,China
Posts: 33
Blog Entries: 6
Rep Power: 6
sunliming is on a distinguished road
Hi Niklas,
I'm quite interested in the channel flow with a vibrating 'floor' case, 'cause I'm working on a similar simulation described below:
I am doing a LES simulation of flow over a flexible wall undergoing a streamwise travelling wave motion, the lower boundary of the domain is shown in the picture below. The elevation of the lower wall is a function of both time and space, i.e. y_wall=amplitude*sin[k(x-ct)], where c is the phase speed and k is frequency, which means every point of the lower boundary oscillates up and down its own equilibrium position with different phase angle.
So how can I deal with such kind of boundary motion and corresponding dynamic mesh?
Any suggestion will be appreciated!
Sunliming
Tongji University,

Shanghai, China,
Email: sunliming59045@hotmail.com
sunliming is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
moving (dynamic) mesh gives fluctuating pressure daniel FLUENT 1 July 31, 2010 14:32
dynamic meshing, rotating moving mesh...... madhan FLUENT 1 January 24, 2007 00:55
Moving Dynamic Mesh in Fluent 6.2 R.M.Bharath Somayaji FLUENT 0 January 9, 2006 21:36
Moving(dynamic) mesh in Fluent yonghyun FLUENT 1 January 25, 2005 15:50
moving solid in dynamic mesh James FLUENT 1 October 4, 2002 07:22


All times are GMT -4. The time now is 05:02.