CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Treating Contact Resistance between two solids in openFoam (Thermal and electric)

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 9, 2023, 06:25
Default Treating Contact Resistance between two solids in openFoam (Thermal and electric)
  #1
New Member
 
Andi
Join Date: Jun 2018
Posts: 13
Rep Power: 8
meshingpumpkins is on a distinguished road
I am trying to simulate a simple bar (region1 "R1" copper) which is connected with another bar ("R2" copper)

in the first step i would like to simulate only heattransfer from one side (400K) to the other side (300K) (rest is adiabat)

In the second step i would also account joule heating including an electric contact resistance.

for validation i used to do the simulation with and without resistance and also using only one region of copper for the whole bar....so no interface is present

solver: chtMultiRegionSimpleFoam

for the interface boundary condition i used: compressible::turbulentTemperatureCoupledBaffleMix ed

i was trying to emulate the resistance of contact with kappaLayer setting but if i compare my results with theory i would conclude that there is something wrong with my results. Has anyone any idea or experiance with contact resistance between solids in openfoam?


I am using the esi version v2112.
Attached Images
File Type: png copper bar.PNG (60.1 KB, 19 views)
File Type: jpg theory_contactresistance.jpg (154.4 KB, 23 views)
File Type: jpg wrongresult.jpg (32.2 KB, 21 views)
File Type: png boundary_interface.PNG (17.5 KB, 18 views)

Last edited by meshingpumpkins; January 9, 2023 at 07:50.
meshingpumpkins is offline   Reply With Quote

Old   January 13, 2023, 07:56
Default
  #2
New Member
 
Andi
Join Date: Jun 2018
Posts: 13
Rep Power: 8
meshingpumpkins is on a distinguished road
dear all!

i went to foundation version 9 and the results are like they should be compared to theory....

so there is some difference between esi and foundation with using
kappalayers.
Attached Images
File Type: jpg resistance_foundationversion.jpg (39.2 KB, 21 views)
meshingpumpkins is offline   Reply With Quote

Reply

Tags
chtmultiregion, contact resistance, interface, jouleheating, openfoam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Solver pivot error in thermal electric burcucicek FLUENT 0 September 28, 2020 11:20
[Other] Thermal calculation of the vacuum electric resistance furnace RoPr OpenFOAM Meshing & Mesh Conversion 0 May 13, 2019 04:21
Interior Surface for electric machine thermal analysis hasfe FLUENT 1 July 21, 2017 05:26
Electric mesh and thermal mesh in battery module sandeep7681 STAR-CCM+ 0 January 14, 2015 00:39
Thermal electric ANSYS tutorial epjx ANSYS 0 October 1, 2009 22:21


All times are GMT -4. The time now is 03:01.