CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Heat transfer on solid/fluid

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

Like Tree1Likes
  • 1 Post By Satish

LinkBack Thread Tools Display Modes
Old   October 27, 2006, 05:04
Default Heat transfer on solid/fluid
Posts: n/a
Hi, Im trying to simulate how to cool a brake disc of a car. I set the disc as solid. The idea is to cool it with air that moves around it. The idea is to set an initial temperature for the disc and a constant temp for the fresh air. But Im seeing that I only can put fixed temperature for the solid. Perhaps Im not seeing something but.. where can I set a non-fixed temperature for the disc in order to simulate the problem?? Also, for the walls that separate the solid from the fluid, is sufficient putting them as coupled or I have to something else?

Thank you folks.
  Reply With Quote

Old   October 30, 2006, 03:52
Default Re: Heat transfer on solid/fluid
Posts: n/a
When u are trying to simulate the brake disc cooling, it involves condution as well as convection.

This problem can be done in two ways...

1) Solving for the convection and conduction combinedly.

2) Decoupling the problem, by solving for the convection first and by using the "h" values solving for the conduction alone( here in the 2nd stage, we wont solve for the fluid flow). This decoupling helps when the mesh size is too large, i.e when solving the brake disc with the full vehicle model.

As you might be solving only the brake disc alone, by considering the fluid volume around, you can solve the condution and convection simultaneously.

To give the initial temperature condition to the rotor solid, we have to patch the solid surface and solid volume with the initial temperature of the rotor.then it wont be constant and will be changing with time. This can be captured by the unsteady run.

Irshad22 likes this.
  Reply With Quote

Old   October 30, 2006, 23:17
Default Re: Heat transfer on solid/fluid
Posts: n/a
Thank you very much Satish! Very clear explanation.
  Reply With Quote

Old   November 2, 2006, 04:24
Default Re: Heat transfer on solid/fluid
nabeel mohsin
Posts: n/a
hi i have done of 2d solid heat trnasfer it worked and a heated cylinder is cooled by coil in which having fluid problem is not converging yet

  Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Two-sided Wall Heat Transfer BC - No Separate Solid Mesh and No Heat Transfer Coeff swahono OpenFOAM Running, Solving & CFD 9 May 22, 2017 16:27
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Convective / Conductive Heat Transfer in Hypersonic flows enigma Main CFD Forum 2 November 1, 2009 23:53
How can I increase Heat Transfer at Domain Interf? B.Simon CFX 3 October 28, 2008 19:53
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55

All times are GMT -4. The time now is 00:47.