CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Static temperature

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

LinkBack Thread Tools Display Modes
Old   March 30, 2005, 12:14
Default Static temperature
Posts: n/a
I am using C_T(c,t) for a few months thinking that it was the static temperature. I saw with a UDF that C_T(c,t) was the total temperature. Is it possible to calculate this static temperature? How can Fluent do that? There is a macro which can represent the real temperature?

Salutation, David
  Reply With Quote

Old   March 31, 2005, 04:25
Default Re: Static temperature
Posts: n/a
for incompressible flows (M<0.3) total temperature is equal to static temperature. for compressible flows static temperatur is computed from T0/Ts = 1+(gamma-1)/2*M^2 with T0=total temp.,Ts=static temp. and gamma=cp/cv.

hope it helps, rom
  Reply With Quote

Old   April 1, 2005, 10:57
Default Re: Static temperature
Posts: n/a
Thanks for your reply Rom. I did not explane properly my problem. I set a convection problem as boundary condition on a wall. So the difference of temperature make some change of temperature in the reservoir. This difference can be seen if we plot the static temperature contour. This difference of temperature can't be seen if we plot the total temperature contour (they plot the initial condition for instance).

When we use UDF, C_T(c,t) returns the total temperature. I have a source term who depends of the static temperature in my reservoir. So I have a problem, I want that Fluent uses my source term with the static temperature (which is supposed to be the real temperature measure with a thermometer) instead of the total temperature.

I use UDM for be sure that the temperature of C_T(c,t) is the total temperature.

Salutation, David
  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
error: uninitialized local variable 't' used MASOUD Fluent UDF and Scheme Programming 3 November 26, 2012 06:24
Tf is averaged by static or total temperature ?? NPU_conanxie Main CFD Forum 0 April 6, 2011 21:30
Bulk temperature Tf is obtained from total or static temperature? NPU_conanxie FLUENT 0 March 30, 2011 05:56
defining a term for a domain using DEFINE_ADJUST MASOUD Fluent UDF and Scheme Programming 1 September 24, 2010 05:08
enum MASOUD Fluent UDF and Scheme Programming 0 June 5, 2010 00:49

All times are GMT -4. The time now is 12:20.