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

Ahmed et al. - 2024 - A Modified Overset Method in OpenFOAM for Simultaneous Motion..

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

Like Tree3Likes
  • 2 Post By jnagy
  • 1 Post By AhmedHamada

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 2, 2024, 06:21
Default Ahmed et al. - 2024 - A Modified Overset Method in OpenFOAM for Simultaneous Motion..
  #1
New Member
 
Jozsef Nagy
Join Date: Dec 2018
Posts: 15
Rep Power: 7
jnagy is on a distinguished road
Comments and questions are welcomed on the article Ahmed et al. A Modified Overset Method in OpenFOAM for Simultaneous Motion and Deformation: A Case Study of a Flexible Flapping Foil, April 2024, OpenFOAM Journal, https://doi.org/10.51560/ofj.v4.96
Tianyz and Jim1310 like this.
jnagy is offline   Reply With Quote

Old   April 3, 2024, 14:20
Default
  #2
New Member
 
Manchester
Join Date: Aug 2022
Posts: 27
Rep Power: 4
Tianyz is on a distinguished road
Quote:
Originally Posted by jnagy View Post
Comments and questions are welcomed on the article Ahmed et al. A Modified Overset Method in OpenFOAM for Simultaneous Motion and Deformation: A Case Study of a Flexible Flapping Foil, April 2024, OpenFOAM Journal, https://doi.org/10.51560/ofj.v4.96

Hi Ahmed,

Your work is really interesting! I have one question for you. By checking the source code, you try to modify the current the overset library to identify and then specify a certain zone to apply the mesh motion and deformation. I noticed that you use the solidBodyDisplacementLaplacian as an example, so does the other mesh motion solver be supported? For example displacementLaplacian. Which will adjust the deformation of the whole overset domain when it terms to the large deformation, including the boundary of the overset mesh.

Best,
Tian
Tianyz is offline   Reply With Quote

Old   April 8, 2024, 05:55
Default
  #3
New Member
 
Karim Ahmed
Join Date: Nov 2017
Posts: 3
Rep Power: 8
Karim ahmed is on a distinguished road
Hello Tian,
Thank you for your interest. Yes I already worked with the displacement Laplacian using our modified solver and it run perfectly fine. However, It will deform a certain patch inside the overset mesh , but i never tried to deform the boundary of the overset mesh itself. Of course when you use a uniform diffusivity this move the boundaries of the overset a little bit when you have large deformation at an interior patch.
Regards,
Karim
Karim ahmed is offline   Reply With Quote

Old   May 13, 2024, 11:56
Default Deforming background mesh
  #4
New Member
 
Dimitris Tsoumpelis
Join Date: Sep 2022
Location: Athens, Greece
Posts: 8
Rep Power: 4
Jim1310 is on a distinguished road
Hello Ahmed,


First of all i want to thank you for your valuable contribution in the openfoam community.
I would like to share a problem which i think is related to your research. For a simulation that i want to run i have concluded that an overset mesh where the background mesh is deformed would be useful. More specifically i aim to simulate the roll motion of a ship (which can potentially be extreme, therefore overset mesh should be used) in a wave flume. The waves in the wave flume are going to be generated from a wave maker (therefore the background mesh should be deformed). Do you know if any such mesh capability already exists?


Kind regards,
Dimitris

Last edited by Jim1310; May 14, 2024 at 07:35.
Jim1310 is offline   Reply With Quote

Old   June 1, 2024, 10:35
Default
  #5
New Member
 
Ahmed
Join Date: Jan 2021
Posts: 1
Rep Power: 0
AhmedHamada is on a distinguished road
Quote:
Originally Posted by Jim1310 View Post
Hello Ahmed,


First of all i want to thank you for your valuable contribution in the openfoam community.
I would like to share a problem which i think is related to your research. For a simulation that i want to run i have concluded that an overset mesh where the background mesh is deformed would be useful. More specifically i aim to simulate the roll motion of a ship (which can potentially be extreme, therefore overset mesh should be used) in a wave flume. The waves in the wave flume are going to be generated from a wave maker (therefore the background mesh should be deformed). Do you know if any such mesh capability already exists?


Kind regards,
Dimitris
Hi Dimitris,
You can conduct this in multiple ways:
1) use some wave model instead of the wave maker.

If you want to add the wave make motion in the simulation
2) use multiple overset (Front) meshes, one for the hull and another for the wave maker.
or
3) The background mesh can be deformed as the zones are defined in this modified overset. So you need to name the background and add the wave maker deformation to it, similar to the front mesh defromation. Check the dynamicOversetZoneFvMesh/Tutorial/LE_Case/backGround/constant
/dynamicMeshDict
https://github.com/AhmedAHamada/dyna...ynamicMeshDict
yukesh_karki likes this.
AhmedHamada is offline   Reply With Quote

Reply
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
Map of the OpenFOAM Forum - Understanding where to post your questions! wyldckat OpenFOAM 10 September 2, 2021 05:29
OpenFOAM Training Jan-Jul 2017, Virtual, London, Houston, Berlin CFDFoundation OpenFOAM Announcements from Other Sources 0 January 4, 2017 06:15
OpenFOAM Training, London, Chicago, Munich, Sep-Oct 2015 cfd.direct OpenFOAM Announcements from Other Sources 2 August 31, 2015 13:36
On the alpha Eqn of VOF method when using Immersed boundary method in OpenFOAM keepfit OpenFOAM 4 January 31, 2014 14:32
Fixed mesh method for rigid body motion philippose OpenFOAM 1 January 12, 2009 04:57


All times are GMT -4. The time now is 12:35.