Translating Sphere in Openfoam using re-mesh Approach

Darren Leong · May 11, 2011, 23:10

Dear OpenFoamers,

I would like simulate translating submerged bodies (e.g. sphere) in OpenFoam, with the idea of making the setup robust for most motion described, e.g. for a docking manoeuvre with large translations to investigate hydrodynamic interactions.

I have been able model this in ANSYS-CFX using a moving and re-meshing approach, the purpose of doing it in OpenFoam is to compare & reduce the computational time needed for such simulations. An example of the CFX run is given in the link below:

http://www.youtube.com/watch?v=T404lwpVI7s

The closest attempt I've found is the adaptive tet remeshing technique by Sandeep Menon and David Schmidt from their powerpoint below.

http://www.openfoamworkshop.org/2009...idt_slides.pdf

I would very grateful of any help given and will be more than happy to post results/documentation of the work in parallel with its progress if allowed.

deepsterblue · May 12, 2011, 09:48

This stuff is already in OF-1.6-ext. Look for the circCylinder3d tutorial in the moveDynamicMesh section.

The version in 1.6-ext is not parallel, but I have a local version that is.

Darren Leong · May 12, 2011, 20:17

Dear Sandeep,

That's relief to know. Will do as advised and get back to you on the running it in parallel after.

Thank you for the information =)!

Warmest regards,
Darren

Quote:

Originally Posted by deepsterblue

This stuff is already in OF-1.6-ext. Look for the circCylinder3d tutorial in the moveDynamicMesh section.

The version in 1.6-ext is not parallel, but I have a local version that is.

May 11, 2011, 23:10	Translating Sphere in Openfoam using re-mesh Approach	#1
Darren Leong Member Darren Leong Join Date: Dec 2010 Posts: 64 Rep Power: 15	Dear OpenFoamers, I would like simulate translating submerged bodies (e.g. sphere) in OpenFoam, with the idea of making the setup robust for most motion described, e.g. for a docking manoeuvre with large translations to investigate hydrodynamic interactions. I have been able model this in ANSYS-CFX using a moving and re-meshing approach, the purpose of doing it in OpenFoam is to compare & reduce the computational time needed for such simulations. An example of the CFX run is given in the link below: http://www.youtube.com/watch?v=T404lwpVI7s The closest attempt I've found is the adaptive tet remeshing technique by Sandeep Menon and David Schmidt from their powerpoint below. http://www.openfoamworkshop.org/2009...idt_slides.pdf I would very grateful of any help given and will be more than happy to post results/documentation of the work in parallel with its progress if allowed.

May 12, 2011, 09:48		#2
deepsterblue Senior Member Sandeep Menon Join Date: Mar 2009 Location: Amherst, MA Posts: 403 Rep Power: 25	This stuff is already in OF-1.6-ext. Look for the circCylinder3d tutorial in the moveDynamicMesh section. The version in 1.6-ext is not parallel, but I have a local version that is. __________________ Sandeep Menon University of Massachusetts Amherst https://github.com/smenon

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