CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

UDF for heat generation

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 7, 2011, 07:22
Default UDF for heat generation
  #1
Member
 
prince
Join Date: Jun 2011
Posts: 56
Rep Power: 14
prince_pahariaa is on a distinguished road
Hii all..

My problem has internal heat generation of around 15 KW. It is near the hemisphere present in my geometry. Problem is heat is not generated through out the hemisphere. It emerges through only part of it. While drawing in GAMBIT, the whole hemisphere is built once. So in fluent i am not getting any idea how to incorporate only half part of solid for heat generation. I guess through writing UDF it can be done. I am rather new to software and this is first problem which i am working in detail. Really need help on this one

Thanking u all..
prince_pahariaa is offline   Reply With Quote

Old   July 8, 2011, 06:47
Default divide the zone
  #2
Member
 
prince
Join Date: Jun 2011
Posts: 56
Rep Power: 14
prince_pahariaa is on a distinguished road
I was trying to solve my problem by using UDF concept. But its not working. I guess i need to go back to GAMBIT and construct the hemisphere in two parts so that i can create two zones. Or if i can able to divide the hemisphere into two parts in fluent itself, my work will become lot easier. I dont know how to do divide in fluent or m not sure whether it can be done or not.

Hoping some help here..

Thanks
prince_pahariaa is offline   Reply With Quote

Old   July 8, 2011, 07:38
Default
  #3
New Member
 
Kristian Etienne Einarsrud
Join Date: Oct 2010
Location: Trondheim
Posts: 29
Rep Power: 15
KristianEtienne is on a distinguished road
Hi,

You can do the separation in fluent, no need to do the whole remeshing task or using a UDF.

First, you need to mark the region which contains one half of your hemisphere. Do this through the "Adapt -> Region" menu. Here you can give the coordinates of your region of interest. When you have given your coordinates, click on "Mark" to store this register. (Do NOT click on the "Adapt" button, as this is used to refine the mesh).

Next, go to "Mesh->Separate->Faces" Under options choose "Mark", under Registers, choose the register you created in the previous step, under "Zones", select the hemisphere which you want to separate. Click on "separate" and you will now have divided your hemisphere into two regions.

Good luck!

-KE
KristianEtienne is offline   Reply With Quote

Old   July 11, 2011, 03:36
Default Problem in finding "Mesh- Separate faces" option
  #4
Member
 
prince
Join Date: Jun 2011
Posts: 56
Rep Power: 14
prince_pahariaa is on a distinguished road
Thankss for the replyy..

Initially i ran into trouble in finding "Mesh-> Separate faces" option. Later i found it under "GRID->Separate Faces" option. I am going to follow the suggestion u have give. Hopefully it should work. I will let u know.

Thanks for the help..
prince_pahariaa is offline   Reply With Quote

Old   July 11, 2011, 03:58
Default
  #5
New Member
 
Kristian Etienne Einarsrud
Join Date: Oct 2010
Location: Trondheim
Posts: 29
Rep Power: 15
KristianEtienne is on a distinguished road
Hello again,

Yes, some names on the menu where changed between versions 6.3 and 12, among others; "Grid" was changed to "Mesh".

Good that you found it anyways. Good luck!
KristianEtienne is offline   Reply With Quote

Reply

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
udf for heat generation rate sarah l Fluent UDF and Scheme Programming 53 December 5, 2022 09:45
entropy generation with UDF mohammadkm Fluent UDF and Scheme Programming 22 June 10, 2020 23:37
Looking for UDF files of the tutorial "Simulation of Wave Generation in a Tank" seucj Fluent UDF and Scheme Programming 12 August 21, 2015 06:52
UDF for heat generation prince_pahariaa Fluent UDF and Scheme Programming 0 July 7, 2011 07:04
Latest news in mesh generation Robert Schneiders Main CFD Forum 0 March 2, 1999 05:07


All times are GMT -4. The time now is 15:54.