CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Free Stream & Wall Temp UDF (http://www.cfd-online.com/Forums/fluent/68817-free-stream-wall-temp-udf.html)

jww October 2, 2009 09:37

Free Stream & Wall Temp UDF
 
I have a free stream temperature which is changing with time. I can define this in a profile (rather than a UDF) easily enough, but I need to communicate the current free stream temperature and adiabatic wall temperature to a UDF which defines the heat flux (using DEFINE_PROFILE) as a function of these variables.

Specifically,
q(x,y,z,t) = H(x,y,z)[T_inf(t)*R(x,y,z) - T_w(x,y,z,t)]
where
q = heat flux
H = heat transfer coefficient (known)
T_inf = free stream temperature (defined in a profile)
R = recovery factor (known)
T_w = adiabatic wall temperature

What syntax is used in a UDF to obtain the free stream temperature at the current time? Also, do I use WALL_TEMP_OUTER to obtain the adiabatic wall temperature at the current time?


All times are GMT -4. The time now is 02:01.