CFD Online URL
[Sponsors]
Home > Forums > CFX

Analysis for bake-out of a structure

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 8, 2009, 06:16
Question Analysis for bake-out of a structure
  #1
New Member
 
Anna Encheva
Join Date: Jul 2009
Posts: 5
Rep Power: 7
anna_67 is on a distinguished road
Hello,

I have to prepare a model - about 40 tons in reality with many cooling channel for bake- out analysis, which means - the structure should be heated from room temperature to a temperature of 240 deg.C. by using a fluid, either water or gas. The result should be which is the shortest time to which you can bring the structure to 240 deg.C and by which flow rate, pressure, etc.
I have to play around with different fluids, different pressures , maximum allowable is 40 bar, and different mass flow rates. In this case which should be the most robust initial conditions I have to apply and how can I get from the results the pressure drop as well - the cooling channels in the whole structure are with many curvatures, bendings, etc.
Thank you for the advices
anna_67 is offline   Reply With Quote

Old   July 8, 2009, 08:38
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 9,880
Rep Power: 78
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
The documentation discusses robust boundary condition combinations. Have a read. It is trivial to get the pressure drop in CFD-Post, just calculate the areaAve pressure (or total pressure usually) over the inlet and outlet boundaries.

Glenn Horrocks
ghorrocks is offline   Reply With Quote

Old   July 8, 2009, 19:32
Default
  #3
Senior Member
 
ckleanth's Avatar
 
George
Join Date: Mar 2009
Location: Birmingham, UK
Posts: 257
Rep Power: 8
ckleanth is on a distinguished road
if you're on about optimising a design or a procedure then yes cfd is what you should be doing.

however to be honest i think you itend to use the wrong software for the job..

from the description of your problem i think you'd be better off on doing "what if" analysis with 1D fluid/thermal software like flowmaster or you could investigate the posibility to use modelica (open source)
__________________
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

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
New ANSYS forum structure, what do you think? Peter FLUENT 10 February 6, 2009 05:07
New ANSYS forum structure, what do you think? Peter CFX 5 February 4, 2009 12:59
Short Course: Computational Thermal Analysis Dean S. Schrage Main CFD Forum 11 September 27, 2000 18:46
Is CFD Science or Art ? John C. Chien Main CFD Forum 36 October 5, 1999 13:58
E-Z question about Von Mises stress Andrew Epp Main CFD Forum 4 September 17, 1999 03:11


All times are GMT -4. The time now is 14:06.