|December 8, 2009, 17:44||
Heat Transfer Boundary Conditions
Join Date: Oct 2009
Posts: 4Rep Power: 8
Hello, I'm confused with the heat transfer calculation at boundaries, and hope someone could kindly clarify that for me:
I'm simulating a fluid flow in a nozzle, and need to specify a convective heat transfer BC at the nozzle wall in the form of: -k_fluid * dT/dn = h_cw*(T-T_cw), where cw stands for cooling water, and I can specify the value of h_cw and T_cw. I saw this BC in a paper, but don't know how to implement it in Fluent. My questions are:
1. how would Fluent calculate the heat flux from the fluid to the wall in this case?
2. do I just input h_cw and T_cw in the convective tab of the wall BC panel, or,
3. do I need to write a UDF with DEFINE_HEAT_FLUX? if this UDF is needed, how should I put it? something like: cid = -k*C_T_G(c,t)?
I'm really troubled with this problem, would greatly appreciate any help or hint. Thank you!
|Thread||Thread Starter||Forum||Replies||Last Post|
|CFX doesn't continue calculation...||mactech001||CFX||6||November 15, 2009 22:25|
|boundary condition for Heat Transfer||sylvain||Main CFD Forum||4||June 30, 2005 15:26|
|Heat exchanger - Boundary conditions||Ani||FLUENT||3||January 20, 2005 06:05|
|Heat Transfer Coeff. at Heat Flux Boundary||Rushyen||CFX||6||January 18, 2001 06:09|
|A problem about setting boundary conditions||lyang||Main CFD Forum||0||September 19, 1999 18:29|