|
[Sponsors] |
how to use fireFoam pyrolysis model moving mesh |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
July 17, 2020, 08:18 |
how to use fireFoam pyrolysis model moving mesh
|
#1 | |
New Member
Armin Alavi
Join Date: May 2019
Location: Tehran
Posts: 22
Rep Power: 7 |
Hello Foamers
I have problems using the moving mesh option in the pyrolysis model provided in fireFoam solver. I set up a 2D case as you see in the first picture. the red region is fluid region and the blue one is the solid region that is to be pyrolised. The red region has a very high temperature and causes the solid material to pyrolyse. Note that the case works fine without the moving mesh option in the pyrolysis model. I have two problems here: 1.the first one is that my simulation corrupts after some iterations (i only get 0.4 seconds of simulation) and leaves me the bellow error: Quote:
It is suggested that if you use the moving mesh option the pyrolysis region gets smaller due to mass loss, but mine gets bigger and it is extremely irrational. as you see in the second picture, boundary cells between fluid and solid are stretched in the pyrolysis direction. I want the solid cells that are pyrolysed completely to join the fluid region, untill all the solid region is pyrolysed and i have nothing left but a full fluid region. Is that even possible? Thank you very much, any help would be highly appreciated. Armin Alavi |
||
December 12, 2020, 13:36 |
|
#2 | |
Senior Member
|
Hello Armin Alavi,
Have you coupled any solvers to find the interaction between solid and fluid regions ? - possibly multiregionFOAM and fireFOAM. May I know what kind of interface boundary condition you have implied for energy transfer. Is there any significant purpose of using moving mesh in your case ? I couldn't able to exactly figure out the change in second picture, where you mentioned pyrolysis zone gets bigger ? Quote:
Quite keen to know your problem objective and application. Thank you |
||
Tags |
firefoam, moving mesh, pyrolysis |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[snappyHexMesh] Add Mesh Layers doesnt work on the whole surface | Kryo | OpenFOAM Meshing & Mesh Conversion | 13 | February 17, 2022 08:34 |
foam-extend-4.1 release | hjasak | OpenFOAM Announcements from Other Sources | 19 | July 16, 2021 06:02 |
Pyrolysis in FireFOAM - default assumptions included in developed version? | Kummi | OpenFOAM Running, Solving & CFD | 0 | August 29, 2019 04:29 |
Question on moving mesh, mesh velocity is really small! | ripperjack | Main CFD Forum | 2 | April 28, 2014 14:37 |
Icemcfd 11: Loss of mesh from surface mesh option? | Joe | CFX | 2 | March 26, 2007 19:10 |