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

Cooling simple 3D geometry problem

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 12, 2006, 10:03
Default Cooling simple 3D geometry problem
  #1
Luk
Guest
 
Posts: n/a
Dear all, I am very fresh Gambit/Fluent user and need to solve a CFD simple problem on the lend computer. My geomery is very simple: I have (created in inventor and exported as .stp) solid it and cylinder matching this hole that symobolics volume of water. I want to simulate cooling of the solid by water that flows through it. I am playing with this for a long time but noticed no interaction between solid and fluid despite patched temperature difference. I guess that problem is in meshing/setting boundary conditions of the "pipe". Can anyone describe way to mesh it properly in gambit? I tryed to do: - load a solid and subtract a cylinder (to get a solid with hole) and than add a cylinder as a second volume. After that set BC's and mesh - load a solid and cylinder without subtracting and mesh it.

None of these tryes give any "cooling" result in final solution (nor Fluent notices any shadow faces). I would be very grateful for any help, With best regards, Lukasz
  Reply With Quote

Old   May 12, 2006, 10:09
Default Re: Cooling simple 3D geometry problem
  #2
Luk
Guest
 
Posts: n/a
Sorry for mistakes, in second line should be "solid and cylinder". The mistake is because I was trying to make solid with hole to avoid subtraction in Gambit.
  Reply With Quote

Old   May 12, 2006, 10:24
Default Re: Cooling simple 3D geometry problem
  #3
philipov
Guest
 
Posts: n/a
You do not need the cylinder. Just set the inner surface of the solid to be BC as constant temperature (the temperature of the fluid).
  Reply With Quote

Old   May 12, 2006, 10:39
Default Re: Cooling simple 3D geometry problem
  #4
Luk
Guest
 
Posts: n/a
Dear Sir, I am not quite sure If I understood You well. I assumed that fluid (Water) will be heated by surrounding hot block (which, in turn will be cooled down). So I though that I need fluid zone inside. In the end I am interested in cooling ratio of the block and leaving water temperature as a function of time.

Luk
  Reply With Quote

Old   May 12, 2006, 10:47
Default Re: Cooling simple 3D geometry problem
  #5
philipov
Guest
 
Posts: n/a
If you want , send me a scheme of your task and I'll write down what can be done. As I understood you want to see temperature of the fluid and temperature of the solid also. If you do not have fluid flow, then just write: M(fluid).cp(fluid).(t1-tx)=M(solid).cp(solid).(tx-t2)
  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
[Gmsh] Problem meshing an imported geometry Alicia OpenFOAM Meshing & Mesh Conversion 0 March 30, 2010 05:53
1D thermal stress problem simple barrodbeam newsboost OpenFOAM Running, Solving & CFD 3 January 2, 2009 16:12
Problem in Initializing Blocking for 2d geometry nitin Dewangan CFX 6 October 24, 2008 02:03
Meshing Film cooling geometry Janendra Telisinghe CFX 1 January 31, 2006 07:16
? Simple CFD problem Davy Main CFD Forum 0 August 21, 1998 07:19


All times are GMT -4. The time now is 17:52.