# Global length

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 April 30, 2003, 03:58 Global length #1 Dustin Lee Guest   Posts: n/a Dear all: Can someone please tell me "How the Global lengeh is calculated?" from CFX-5.5 out-file.

 April 30, 2003, 11:33 Re: Global length #2 Robin Guest   Posts: n/a Square root of the volume.

 May 1, 2003, 02:13 Re: Global length #3 SHRINIVAS Guest   Posts: n/a 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

 May 1, 2003, 13:57 Re: Global length #4 Robin Guest   Posts: n/a The volume of the entire mesh, hence the GLOBAL length scale. Robin

 May 2, 2003, 00:49 Re: Global length #5 Dustin Lee Guest   Posts: n/a Thanks to Robin & Shrinivas. When I simplied the volume, its clear that the "Global length" scale is the "cubic root of the Volume".

 May 3, 2003, 22:08 Re: Global length #6 Robin Guest   Posts: n/a Sorry, cube root of the volume :-P

 May 14, 2003, 17:43 Re: Global length #7 cfxuser Guest   Posts: n/a 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.

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