InterFoam vs InterDyMFoam

Rose2011 · June 20, 2011, 08:26

Hi Everyone,

I am a new user of OpenFOAM and am aiming to use it as part of my Master thesis. I am modelling a floating object under the influence of waves (I will use the groovyBC boundary condition). However I am a little confused as to the difference between the interFoam solver and the interDyMFoam solver.

Could someone please explain the difference between these solvers and for what scenarios they are best used? Is interDyMFoam specifically for use with a dynamic mesh?

Thanks in advance,

Rose

nimasam · June 20, 2011, 16:04

hi
interDyMfoam use a tool to refine mesh dynamically in selected cell ,so you can have sharper interface!

Arnoldinho · June 21, 2011, 03:21

Generally, interDymFoam is interFoam plus mesh modification. This mesh modification can either consist of mesh refinement in local areas (e.g. to sharpen the fluid interface, as already said) or of a mesh motion part due to calculated quantities (e.g forces).

If you have to decide which one you need, ask yourself the question if your floating object is moving in the water due to wave forces, or if it is fixed. In case of mesh refinement at the interface: Do you really need it (as it can take quite much computational time), or is a generally (statically) refined mesh in the wave area enough for you...

Arne

Rose2011 · June 21, 2011, 05:21

Thank you for your replies. My floating object is not fixed and I am particularly interested in what happens at the interface, so I guess that leads to using interDyMFoam. Maybe I will try both interFoam and interDyMFoam to compare results.

Thanks again,

Rose

smraniaki · March 6, 2013, 10:56

Does anybody knows what method is used in InterDyMFoam to refine boundary surface meshes?

June 20, 2011, 08:26	InterFoam vs InterDyMFoam	#1
Rose2011 New Member Rose Lambert Join Date: Jun 2011 Posts: 6 Rep Power: 14	Hi Everyone, I am a new user of OpenFOAM and am aiming to use it as part of my Master thesis. I am modelling a floating object under the influence of waves (I will use the groovyBC boundary condition). However I am a little confused as to the difference between the interFoam solver and the interDyMFoam solver. Could someone please explain the difference between these solvers and for what scenarios they are best used? Is interDyMFoam specifically for use with a dynamic mesh? Thanks in advance, Rose

June 21, 2011, 03:21		#3
Arnoldinho Senior Member Arne Stahlmann Join Date: Nov 2009 Location: Hanover, Germany Posts: 209 Rep Power: 17	Generally, interDymFoam is interFoam plus mesh modification. This mesh modification can either consist of mesh refinement in local areas (e.g. to sharpen the fluid interface, as already said) or of a mesh motion part due to calculated quantities (e.g forces). If you have to decide which one you need, ask yourself the question if your floating object is moving in the water due to wave forces, or if it is fixed. In case of mesh refinement at the interface: Do you really need it (as it can take quite much computational time), or is a generally (statically) refined mesh in the wave area enough for you... Arne Last edited by Arnoldinho; June 21, 2011 at 04:02.

March 6, 2013, 10:56	InterDyMFoam	#5
smraniaki New Member Join Date: Dec 2012 Posts: 19 Rep Power: 13	Does anybody knows what method is used in InterDyMFoam to refine boundary surface meshes?

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June 20, 2011, 16:04		#2
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,266 Blog Entries: 1 Rep Power: 24	hi interDyMfoam use a tool to refine mesh dynamically in selected cell ,so you can have sharper interface!

June 21, 2011, 05:21		#4
Rose2011 New Member Rose Lambert Join Date: Jun 2011 Posts: 6 Rep Power: 14	Thank you for your replies. My floating object is not fixed and I am particularly interested in what happens at the interface, so I guess that leads to using interDyMFoam. Maybe I will try both interFoam and interDyMFoam to compare results. Thanks again, Rose