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

Moving Mesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 2, 2011, 04:39
Default Moving Mesh
  #1
New Member
 
linda zhang
Join Date: Dec 2010
Posts: 7
Rep Power: 6
Linda is on a distinguished road
Hi, Foamers


I would like to simulate the bed morphology. There is one moving boundary(sea bottom) in the computation domain. The movement (Ux, Uy, Uz) of that boundary is determined by Exner equation and changes with time.

1. Could movingConeMotion in icoDyMFoam in OF-1.5-dev solve the problem I mentioned before?

2. If so, in dynamicMeshDict, does twoDMotion mean that there are two direction movements of the boundary mesh points?How can I transfer the movement of the boundary to the solver? Which boundary condition should I use?

3. If no, could you help to suggest which way I should go?

Thanks
Linda
Linda is offline   Reply With Quote

Old   September 2, 2011, 05:14
Default
  #2
Senior Member
 
Elvis
Join Date: Mar 2009
Location: Sindelfingen, Germany
Posts: 579
Blog Entries: 5
Rep Power: 13
elvis is on a distinguished road
Hello,

what about http://www.openfoamworkshop.org/6th_...liu_slides.pdf
Fruitful Modeling and Research Efforts by the Environmental Fluid Mechanics Group using OpenFOAM at University of Texas at San Antonio, TX , Xiaofeng Liu

I just searched for seabed openfoam at google scholar
elvis is offline   Reply With Quote

Old   September 5, 2011, 02:29
Default
  #3
New Member
 
linda zhang
Join Date: Dec 2010
Posts: 7
Rep Power: 6
Linda is on a distinguished road
Hello,elvis:

Thanks. I read Dr. Liu's thesis and paper. However, I am wondering whether there is a tutorial as this case. Does it take longer time to do the tactics or not?

regards
Linda
Linda is offline   Reply With Quote

Old   September 5, 2011, 05:27
Default
  #4
Senior Member
 
Elvis
Join Date: Mar 2009
Location: Sindelfingen, Germany
Posts: 579
Blog Entries: 5
Rep Power: 13
elvis is on a distinguished road
Dear Linda,

just saw that there is some work in these area
http://powerlab.fsb.hr/ped/kturbo/Op...006-jsc-16.pdf
http://gradworks.umi.com/3314965.pdf

Tutorials / tutorial cases are often provided by a Special Interest Group (SIG) that is working in that area
http://www.extend-project.de/user-groups/11/groups list some SIG that have founded

For "moving mesh" there are different stategies =>http://www.openfoamworkshop.org/6th_...ney_slides.pdf Adaptive Tetrahedral Re-Meshing for Deforming Domains,
K. Mooney, UMass Amherst

So you have to sort out which of them is the right one for your problem

Last edited by elvis; September 5, 2011 at 05:45.
elvis is offline   Reply With Quote

Old   June 18, 2013, 12:02
Default
  #5
New Member
 
kingleli
Join Date: Oct 2011
Posts: 9
Rep Power: 5
kingle is on a distinguished road
Quote:
Originally Posted by Linda View Post
Hello,elvis:

Thanks. I read Dr. Liu's thesis and paper. However, I am wondering whether there is a tutorial as this case. Does it take longer time to do the tactics or not?

regards
Linda
Hi, I think we are doing the similar work, I know some method of modeling morpholoy migration,such as Two-phase, FAM & automesh deformation , etc. But I think the classic method is moving mesh according Exner equation(sediment continuty), because the interface between the water and riverbed is sharp and not the mixture, so I don't think the FAM or two - phase method are appropriat for your project.I just know the theory about this method (I have read XiaofengLiu's paper) . However, I don't realize it. Because my knowledge on C++ is poor Now , i have been working on the sediment transport, especially on the bed load. If you have interest, we can communicate with each other, looking for your reply.
kingle 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
SnappyHexMesh for internal Flow vishwa OpenFOAM Native Meshers: snappyHexMesh and Others 23 August 6, 2014 03:50
How to let the mesh motion solver just solve a small region near a moving boundary? zhajingjing OpenFOAM 8 April 7, 2014 11:10
external flow with snappyHexMesh chelvistero OpenFOAM 11 January 15, 2010 20:43
CavitatingFoam with a moving mesh mass conservation error idosil OpenFOAM Running, Solving & CFD 3 November 27, 2007 18:27
Waves halted by moving mesh Piotr Czajko Main CFD Forum 1 November 24, 2007 03:00


All times are GMT -4. The time now is 22:40.