CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > System Analysis

Rise of temperature in a thin film by electric potential

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 21, 2019, 05:41
Default Rise of temperature in a thin film by electric potential
  #1
New Member
 
Sofia Gridoni
Join Date: Jan 2019
Posts: 1
Rep Power: 0
SofiG is on a distinguished road
Hello everyone,

I'm having some problems solving a heat trasfer problem.

I have some experimental data about temperature rise in a thin film due to electic power, i need to simulate them in fluent.
I have a glass, thickness around 4mm, over this glass there is a thin film of a material that conduct elecricity. At the edge of the glass and the film i have two clips that are connected to a generator that has a 12V voltage, I wanted to find out how the temperature rise in the upper surface of the thin film (the surface in contact with air).
I simulate this problem first of all by adding to fluent both energy equation and electric potential (I add the Joule equation too), but the temperauture rise was way too small compared to the actual temperature rise that i had in the experimental data. So i tried to add on my own the electric power that was generated in the film by adding a source terms, the heat generated per unit volume was calculated by the formula P=V^2/R and then i divide everything by the volume of the thin film by assuming that all the heat generated was in the thin film and not in the glass, approximation that i think was good becuase the electric conducticity of the film was 10^4 grater then the one of the glass. Of course when i added the source term i took out the electic potential in models.
By this system i got some more realistic data, but I wonder why?
By adding the source term wasnt the system the same as the one in which i had the electric potential?
In both case dont i just add a heat generation in the energy equation?

I'm sorry form my english but it's not my first language i did my best, i hope it's undestandable by someone

Thank you so much
SofiG is offline   Reply With Quote

Reply

Tags
electic potential, temperature

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
Closed volume pressure rise with temperature rise vinayak4399 FLUENT 10 March 11, 2020 09:29
Inside pipe wall temperature rise time t=? tibor Autodesk Simulation CFD 5 September 22, 2017 18:50
Natural convection through fin in Ansys FLUENT hifjur FLUENT 9 March 16, 2016 12:52
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 07:27
potential temperature Catherine Meissner Phoenics 6 July 2, 2008 09:31


All times are GMT -4. The time now is 19:21.