CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   CFX (https://www.cfd-online.com/Forums/cfx/)
-   -   Global length (https://www.cfd-online.com/Forums/cfx/19600-global-length.html)

Dustin Lee April 30, 2003 03:58

Global length
 
Dear all: Can someone please tell me "How the Global lengeh is calculated?" from CFX-5.5 out-file.

Robin April 30, 2003 11:33

Re: Global length
 
Square root of the volume.

SHRINIVAS May 1, 2003 02:13

Re: Global length
 
dear..

I saw your reply for a question about global length. you told it is square root of volume. If so, which cell volume, as this volume change from cell to cell

bye


Robin May 1, 2003 13:57

Re: Global length
 
The volume of the entire mesh, hence the GLOBAL length scale.

Robin

Dustin Lee May 2, 2003 00:49

Re: Global length
 
Thanks to Robin & Shrinivas. When I simplied the volume, its clear that the "Global length" scale is the "cubic root of the Volume".

Robin May 3, 2003 22:08

Re: Global length
 
Sorry, cube root of the volume :-P

cfxuser May 14, 2003 17:43

Re: Global length
 
You should really calculate your own characteristic length scale appropriate to the problem, as the value calculated based on the cubed root of the domain volume rarely produces a value appropriate for the physical problem, the same for the time-scale also.


All times are GMT -4. The time now is 10:14.