|
[Sponsors] |
Convective multi-region HT (MRconjugateHeatFoam) |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
April 13, 2013, 15:32 |
Convective multi-region HT (MRconjugateHeatFoam)
|
#1 |
New Member
Cameron
Join Date: Apr 2013
Posts: 4
Rep Power: 13 |
Hey Foamers,
I am interested in a multi-region, heat transfer solver that works with forced convection (chtMultiRegionFoam, features fluid-solid interaction but only simulates natural convection). Penn State's Dr. Craven and Dr. Campbell gave a really interesting talk at the 6th OF workshop titled "Multi-region Heat / Mass Transfer". In their presentation, they use and describe the solver MRconjugateHeatFoam. http://www.personal.psu.edu/dab143/O...ven_slides.pdf I booted up the 6th OF Workshop's distribution from the iso file, but I had no luck finding the solver. Does anyone have a recommendation on where to find it? Other ideas for modelling the coupled HT of a fluid channel and the solid geometry encasing it would also be welcome! -Cameron |
|
April 15, 2013, 04:59 |
|
#2 |
Member
Join Date: Nov 2012
Posts: 58
Rep Power: 13 |
Why do you claim/state/suppose that chtMultiRegionFoam deals only with natural convection?
|
|
April 15, 2013, 12:03 |
|
#3 |
New Member
Cameron
Join Date: Apr 2013
Posts: 4
Rep Power: 13 |
My assumption about chtMultiRegionFoam was based on different reports, tutorials, presentations, and forum posts I looked through last week. If it is incorrect, then please let me know!
In other news, I have found the conjugateHeatFoam solver (part of OpenFoam-1.6-ext), and I believe that it will suit my needs well. |
|
April 15, 2013, 12:31 |
|
#4 |
Member
Join Date: Nov 2012
Posts: 58
Rep Power: 13 |
So what is the difference in the equations between a forced convection and a natural convection solver? Is it not just the g-term? This can be deactivated in chtMultiRegionFoam.
If I am not mistaken, the difference between chtMultiRegionFoam and conjugateHeatFoam lies on other characteristics (in-/compressible, coupled/segregated and so on). |
|
April 16, 2013, 12:13 |
|
#5 |
Senior Member
HECKMANN Frédéric
Join Date: Jul 2010
Posts: 249
Rep Power: 17 |
Nature convection is not easy to achieve ! Theoretically yes, you just put a term with g and you should get your result. However, I've never encounter any case that is going smoothly with this.
It is so problematic sometimes that OF has some dedicated solver for Nature Convection. |
|
April 16, 2013, 15:04 |
|
#6 |
Member
Join Date: Nov 2012
Posts: 58
Rep Power: 13 |
It is nice to know that Fredo, I have never been involved with natural convection. But here I meant that a natural convection solver could probably be easily converted to a forced convection solver, not the other way around. Also, this is just my hypothesis, I would not call myself an expert :-)
|
|
April 17, 2013, 12:30 |
|
#7 | |
New Member
caduqued
Join Date: Apr 2009
Location: UK
Posts: 16
Rep Power: 17 |
Quote:
Hey Cameron, In any case, to answer your original question, if you still need those files, the original link is this: http://www.personal.psu.edu/dab143/OFW6/training.htm Hopefully they will keep the link up for some time. Regards, |
||
April 18, 2013, 14:12 |
|
#8 |
New Member
Cameron
Join Date: Apr 2013
Posts: 4
Rep Power: 13 |
Thanks for the link caduqued!
|
|
November 28, 2013, 06:47 |
|
#9 | |
Super Moderator
Tobias Holzmann
Join Date: Oct 2010
Location: Bad Wörishofen
Posts: 2,711
Blog Entries: 6
Rep Power: 51 |
Quote:
Hi, chtMultiRegion*Foam should be able to calculate forced convection - why should this solver not be able to do that? In my opinion the natural convection compared with forced convection is very small so you "could" set g to (0 0 0) but that does not make sence in my opinion. If you get forced convection you always can enable natural convection. It has no big influence but I think your calculating time would not be blow up if you use natrual convection too. I have solved forced convection 4 years ago in my Bachelor Thesis with the chtMultiRegionSimpleFoam with very good Quality and quantity results (incompressible). Additionally: In your title you wrote: (MRconjugateHeatFoam) - so I am asking myself what is the difference: chtMultiRegion = conjugated heat Transfer of Multi region (MRconjugateHeatFoam) = Multi Region conjugate heat Transfer I have no idea which differences are made in that solver - compared to the Standard cht solver in openfoam. Maybe it could solve compressible fluids too ... ? Do not know. Maybe you have a better prediction of wall Treatments or stuff like that. Hence you should compare the solvers but first I would use the official cht solver, make my Simulation and compare it with Literature or measurment data. Regards Tobi |
||
December 5, 2013, 01:41 |
MRconjugateHeatFoam and chtMultiRegionFoam
|
#10 |
Member
Kumudu
Join Date: Oct 2013
Posts: 63
Rep Power: 13 |
[QUOTE=Tobi;463887]Hi,
In your title you wrote: (MRconjugateHeatFoam) - so I am asking myself what is the difference: chtMultiRegion = conjugated heat Transfer of Multi region (MRconjugateHeatFoam) = Multi Region conjugate heat Transfer ***************************************** Hi, I want to use MRconjugateHeatFoam. I think, it solves only the advection diffusion equation for fluid and diffusion equation for solid. Also, all the flid and solid properties are constant unlike the chtMultiRegionFoam. The problem is it has defined only for two region, one for fluid and one for solid. However, chtMultiRegionFoam has the capability of using any number of regions. If you have used the MRconjugateHeatFoam to solve for more than two regions, please let me know how you change the code to add these new regions. Thanks, Kumudu |
|
Tags |
convective scheme, fsi, heat transfer, multi-region |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Suggestions for a multi region conjugate heat transfer problem | maddalena | OpenFOAM | 14 | September 4, 2013 18:03 |
[snappyHexMesh] Multi region meshing & recovering the original patch names | fluidpath | OpenFOAM Meshing & Mesh Conversion | 4 | May 19, 2013 19:13 |
[Commercial meshers] Using starToFoam | clo | OpenFOAM Meshing & Mesh Conversion | 33 | September 26, 2012 04:04 |
[Other] StarToFoam error | Kart | OpenFOAM Meshing & Mesh Conversion | 1 | February 4, 2010 04:38 |
[Gmsh] Import gmsh msh to Foam | adorean | OpenFOAM Meshing & Mesh Conversion | 24 | April 27, 2005 08:19 |