Front tracking and mesh manipulation

Nathanael3 · April 18, 2013, 17:48

Hi,

I would like to compute a wood chip set on fire. The mesh is 2D axisymetric.
Physically, there will be reactions fronts (I would like to refine the mesh around them) that will preceed the flame . Then, the flame (I don't want to compute it). Finally, ashes that I do not want to model.

I would like to know if there was any tutorial / threads related to front tracking, mesh shrining (in order to remove the burnt wood).

Thanks for your help !
Nath'

wyldckat · April 18, 2013, 18:26

Greetings Nathanael3 and welcome to the forum!

If I remember correctly, the OpenFOAM tutorial that comes to my mind is "multiphase/interDyMFoam/ras/damBreakWithObstacle", where the surface between fluid and the air is more refined and is gradually refined/unrefined during the simulation, while the interface surface goes along the way.

For the rest, there are several kinds of combustion solvers in OpenFOAM, found in the "tutorials" sub-folder "combustion". Problem is that I don't think that there are any "dynamic mesh" ones for what you're looking for, but I could be wrong or simply outdated

Good luck!
Bruno

Nathanael3 · April 19, 2013, 02:35

Hi Bruno,

Thanks for the advice, I will have a look at dam break with obstacle.

Nathanael.

April 18, 2013, 17:48	Front tracking and mesh manipulation	#1
Nathanael3 New Member Join Date: Apr 2013 Posts: 20 Rep Power: 13	Hi, I would like to compute a wood chip set on fire. The mesh is 2D axisymetric. Physically, there will be reactions fronts (I would like to refine the mesh around them) that will preceed the flame . Then, the flame (I don't want to compute it). Finally, ashes that I do not want to model. I would like to know if there was any tutorial / threads related to front tracking, mesh shrining (in order to remove the burnt wood). Thanks for your help ! Nath'

April 18, 2013, 18:26		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 128	Greetings Nathanael3 and welcome to the forum! If I remember correctly, the OpenFOAM tutorial that comes to my mind is "multiphase/interDyMFoam/ras/damBreakWithObstacle", where the surface between fluid and the air is more refined and is gradually refined/unrefined during the simulation, while the interface surface goes along the way. For the rest, there are several kinds of combustion solvers in OpenFOAM, found in the "tutorials" sub-folder "combustion". Problem is that I don't think that there are any "dynamic mesh" ones for what you're looking for, but I could be wrong or simply outdated Good luck! Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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April 19, 2013, 02:35		#3
Nathanael3 New Member Join Date: Apr 2013 Posts: 20 Rep Power: 13	Hi Bruno, Thanks for the advice, I will have a look at dam break with obstacle. Nathanael.