# Conjugate heat transfer

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

 January 17, 2002, 10:31 Conjugate heat transfer #1 Jing Guest   Posts: n/a Hi, I am working on simulating a fluid-solid cooling system in StarCD version 3.10. I have several questions about the conjugate heat transfer. 1) In my case, the fluid region is compressible and there is heat transfer between solid and fluid. I wonder if I should choose total enthaply as a conservation parameter for solving energy equation of fluid. 2) How does StarCD calculate the temperature on the fluid/solid interface? In the manual, it is only said that the continuity of the energy flux is considered. All opinions are appreciated!

 January 17, 2002, 14:53 Re: Conjugate heat transfer #2 john Guest   Posts: n/a 1. you can choose total enthalpy. 2. you have heat flux from solid side, say, Hflux_solid=(T_wall - T_cell_solid)/D_solid * C where D_solid is distance between wall and near wall cell in solid, and C is heat conductivity. Heat flux from fluid side, is, Hflux_fluid=(T_wall - T_cell_fluid)/D_fluid *Coeff where the coefficient Coeff depends on if the fluid is laminar or turbulent (in later case, normally a kind of wall function is used). By equating these two heat fluxes, you can then get T_wall, the temperature at solid-fluid interface.

 January 17, 2002, 14:55 Re: Conjugate heat transfer #3 john Guest   Posts: n/a sorry, both equations should be multiplied by the wall face area.

 January 21, 2002, 12:06 Re: Conjugate heat transfer #4 Jing Guest   Posts: n/a Hi, John! Thanks for your ideas! The second point you written down about the calculation of T_WALL is just what we means the "CONJUGATE HEAT TRANSFER". I would like to make sure again: Does StarCD calculate the T_WALL in this way? I ask so only because that it is not mentioned in the manual. Thanks!

 January 21, 2002, 12:27 Re: Conjugate heat transfer #5 john Guest   Posts: n/a Yes, that is how STAR-CD calculates wall temperature at solid-fluid interface.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post cirilo CD-adapco 1 April 18, 2006 09:16 Rabbit FLUENT 0 October 18, 2002 00:32 H. Roy Main CFD Forum 1 June 27, 2002 01:06 A. Roy Phoenics 1 June 26, 2002 18:35 Kanghua Chen Main CFD Forum 15 October 11, 1999 14:59

All times are GMT -4. The time now is 04:35.