CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

heat generation in CFX

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 7, 2009, 04:48
Default heat generation in CFX
  #1
Ema
New Member
 
Tuffy
Join Date: Jun 2009
Posts: 28
Rep Power: 17
Ema is on a distinguished road
Hi everyone,
I need your help.

1)What does it mean that CFX has an EMAG capability?
I'm using cfx in the multyfield way, coupling an exported file from a mechanical transient thermal simulation to cfx. Someone told me that I can run this al in CFX using the emag capability of cfx.

2)Is someone using this kind of simulation? 'cause have a second problem, when i analize my results i notice that cfd post has a defect: even if cfx and mechanical are running together and they are part of the same project and even if i set the same unit of measurement regarding the temperature (K), actually the half of my .rth file (the one belonging from mechanical) is posting processed in C and not in K.

Really hope someone can help me.
Thanks to everyone in advance!!!!!
Ema is offline   Reply With Quote

Old   August 7, 2009, 05:49
Default
  #2
Senior Member
 
ckleanth's Avatar
 
George
Join Date: Mar 2009
Location: Birmingham, UK
Posts: 257
Rep Power: 18
ckleanth is on a distinguished road
1) yes... cfx has emag capability. everything that you need to know about the module is now explained in the manual.

2) yes i'm using emag within cfx, doesn't matter what units post spits out as numbers are processed in C or K depending on what you set your default units to be. however i cant seem to understand the confusion as the two issues are not linked
__________________
Top 4 tips
1. Knowledge is everything and Ignorance is dangerous.
2. Understand your limitations and try to eliminate them.
3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window.
4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials
ckleanth is offline   Reply With Quote

Old   August 7, 2009, 06:03
Default
  #3
Ema
New Member
 
Tuffy
Join Date: Jun 2009
Posts: 28
Rep Power: 17
Ema is on a distinguished road

to use a multifield simulation i must include an input file exported from my mechanical simulation without run it before.
Once that i have saved this file, (with the same units of measurement of cfx, and the same simulation time) i can include it in cfx and run it here.
analizing the results i see that the elements belonging to cfx have results expressed in K, and the others in C, because, even if the legend is in K for all the stuff, the temperatures are lower than what i expect, exactly of 273 K or C.
Ema is offline   Reply With Quote

Old   August 7, 2009, 06:35
Default
  #4
Senior Member
 
ckleanth's Avatar
 
George
Join Date: Mar 2009
Location: Birmingham, UK
Posts: 257
Rep Power: 18
ckleanth is on a distinguished road
when you import data you must define the units. obviously there might be something "lost in translation" ??
__________________
Top 4 tips
1. Knowledge is everything and Ignorance is dangerous.
2. Understand your limitations and try to eliminate them.
3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window.
4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials
ckleanth is offline   Reply With Quote

Old   August 7, 2009, 06:39
Default
  #5
Ema
New Member
 
Tuffy
Join Date: Jun 2009
Posts: 28
Rep Power: 17
Ema is on a distinguished road
Of course I've defined it. I guess it's a defect with cfd post. The .rth file is being post processed in K not C when results are resumed as part of the same system. So i might find a workaround...
Ema is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat transfer coefficient in CFX code Halim CFX 12 February 10, 2013 05:20
Heat Flux display in CFX post CFDLife CFX 3 July 2, 2008 09:17
heat generation rate ssh FLUENT 0 April 16, 2008 22:49
how to simulate 2d solid heat conduction using CFX richard CFX 3 March 24, 2008 08:27
modelling heat generation occourred by friction Ruggero Pellegrin CFX 0 February 11, 2005 07:29


All times are GMT -4. The time now is 16:22.