CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CD-adapco

Total temperature

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 26, 2002, 23:30
Default Total temperature
  #1
Emilio
Guest
 
Posts: n/a
Can anybody clearify me the meaning of Total temperature...
  Reply With Quote

Old   December 27, 2002, 05:04
Default Re: Total temperature
  #2
massimo
Guest
 
Posts: n/a
The total temperature is:

Ttot = T + ( 0.5 * V^2 + k ) / cp

I have a question for you; What is the meaning of Heat Flux? In fact into the men¨ "get wall data" there is the function "HFlux" and this maybe or total heat trough the wall or only heat convection.

In the first case:

Heat Flux(trough the wall)=TIRA - TRAD -Heat convection

The second case:

Total heat(trough the wall)=TIRA - TRAD - Heat flux

Can you help me? Bye Massimo
  Reply With Quote

Old   December 28, 2002, 00:07
Default Re: Total temperature
  #3
Emilio
Guest
 
Posts: n/a
Unless you are analyzing some very particular case, radiative heat transfer is generally of no importance, and unless you turn it on through the specific command it is not calculated. The heat flux in this case means convective plus conductive heat transfer.

bye and thanks, but what I would like to know is what is the meaning of total temperature what does it physically represent..?? I guess it might be important in high speed flows..
  Reply With Quote

Old   December 28, 2002, 06:16
Default Re: Total temperature
  #4
massimo
Guest
 
Posts: n/a
The total temperature is a very important physics fenomena in fact it is the temperature of a single particle during its motion. So the total temperature must consider the velocity component and the density of a fluid.

Bye and thank you for your help.
  Reply With Quote

Old   December 28, 2002, 06:36
Default Re: Total temperature
  #5
massimo
Guest
 
Posts: n/a
Excuse me but I have a problem with a wall data. My case is the following:

- I have an external and internal cylinder between that there is a hot fluid; so I have modelled the two cylinder with solid cells and the intermediate fluid with fluid cells. I'd like to display the wall data into external surface in particular I' d like to display the wall data in a normal section. The normal section can't displays the Area of the cells that lie at this section and the area is very important becouse the heat flux is for unit of area [w/m^2].

How can I get it? Bye

  Reply With Quote

Old   December 29, 2002, 23:02
Default Re: Total temperature
  #6
CJ Tune
Guest
 
Posts: n/a
Tried plotting a graph? Try picking and/or creating vertices on the model and then use the command SENS to add and scan through the (already loaded) post data. If you just picked existing vertices then no need to use SENS. Load the data into the graph registers.
  Reply With Quote

Reply

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
static temperature more than total temperature ?? mahesh FLUENT 3 June 21, 2009 17:08
static temperature and total temperature showwa FLUENT 2 December 15, 2008 05:38
How do about total temperature BC in rhopSonicFoam yijin_li OpenFOAM Running, Solving & CFD 0 December 3, 2008 02:34
HELP!!! total temperature of backflow Jack FLUENT 0 October 13, 2005 14:20
backflow total temperature? rachid FLUENT 0 September 25, 2005 20:59


All times are GMT -4. The time now is 04:21.