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

reasonable result for air flow in city buildings?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 21, 2006, 21:36
Default reasonable result for air flow in city buildings?
  #1
George
Guest
 
Posts: n/a
Dear friends, i'm just using fluent for analysising the flow field in building group.Because of big space and limitation of my personal computer,i'm confronted with some problems,please help me, (1)i'm not clear what is the Re number in this situation.Surposed inlet veolecity speed is 10m/s and the whole space is 400m*300*150m. (2)hex grid size in my mesh is about 2m to 10m, i'm not sure whether it is reasonale,when iterating,fluent show message"turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 126152 cells" even continuity residual drops to 1e-4. (3)as you konw,air viscosity is very small,just 1.7894e-05,should i need using similarity theory to reduce the size of whole model for my simulation,what kinds of rule should i take? i'm appreciating for your help.

Best Regards George
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 22:31
Help: Poiseulle flow benchmariking Mohammad Kermani Main CFD Forum 1 November 12, 1999 17:15
Flow visualization vs. Calculated flow patterns Francisco Saldarriaga Main CFD Forum 1 August 3, 1999 00:18
Question on 3D potential flow Adrin Gharakhani Main CFD Forum 13 June 21, 1999 06:18
computation about flow around a yawed cone Tylor Xie Main CFD Forum 0 June 9, 1999 08:33


All times are GMT -4. The time now is 08:40.