CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Community Contributions > OpenFOAM CC Toolkits for Fluid-Structure Interaction

[solids4Foam] Problems while validating Turek and Hron (2006) FSI2 and FSI3 problems in solids4Foam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 6, 2021, 18:02
Lightbulb Problems while validating Turek and Hron (2006) FSI2 and FSI3 problems in solids4Foam
  #1
New Member
 
Subhasisa
Join Date: Sep 2016
Posts: 2
Rep Power: 0
subhasisa.rath is on a distinguished road
I have currently started working on FSI problems using solids4Foam toolkit in foam-extend 4.0. While validating the Turek and Hron FSI problem from the tutorial, I am facing few problems as follows:

1. First of all, in the Turek and Hron paper, they have used "Saint Venant–Kirchhoff" material instead of "Neo-Hookean solid" material. Thus I have changed the material in simulation.

2. While validating FSI2, after every try with different materials (linear elastic, Saint Venant–Kirchhoff and Neo-Hookean solid), different FSI interface schemes (fixedRelaxation, Aitken and IQNILS) and different linear and non-linear solid models, the simulation is diverging between 7-8 sec with the following FOAM error.

--> FOAM Warning :
From function void neoHookeanElastic::correct(surfaceSymmTensorField& sigma)
in file materialModels/mechanicalModel/mechanicalLaws/mechanicalLaw/mechanicalLaw.C at line 549
Material linearity enforced for stability!

3. While validating FSI3 with Neo-Hookean solid, simulation is not diverging but results are not matching properly with Turek and Hron paper. WIth Saint Venant–Kirchhoff model, simulating is not converging even after 15sec. Amplitude or displacement (dx and dy) gradually reducing.

4. I have also tried with two different Meshes and reduced the under relaxation factors for D,DD, DEqn, DDEqn but facing the same problem.
subhasisa.rath is offline   Reply With Quote

Reply

Tags
foam-extend 4.0, fsi, solids4foam

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
[solids4Foam] Problems while validating Turek and Hron (2006) FSI2 and FSI3 problems in solids4Foam subhasisa.rath OpenFOAM CC Toolkits for Fluid-Structure Interaction 0 September 6, 2021 17:37


All times are GMT -4. The time now is 08:27.