CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Kolmogeru scale

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

LinkBack Thread Tools Display Modes
Old   October 20, 2008, 23:37
Default Kolmogeru scale
Posts: n/a
Hi all.

I've been reading something about the scales in turbulent flow, and really can't get a handle on it. Why should we define scales in flow? Why is Kolmogeru scale the smallest scales in a turbulent flow and what are the largest scales? Is there any subjects in this forum or any book I can refer to?

Thank you

Kind Regards
  Reply With Quote

Old   October 21, 2008, 11:40
Default Re: Kolmogeru scale
Posts: n/a
The size of the smaller scales is determined by the size below which viscous dissipation starts to become important, ie. eddies are dissipated below this scale (ie. the Kolmogorov scale). The larger scales are of the order of the flow scale, e.g. diameter of a cilinder placed in uniform flow.

A good reference would be "turbulence modelling for CFD", by Wilcox.
  Reply With Quote

Old   October 21, 2008, 14:59
Default Re: Kolmogeru scale
Posts: n/a
Thanks, That helps

  Reply With Quote


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
Turbulence length scale and integral length scale rizhang CFX 1 September 10, 2009 06:38
advection time scale Tanveer ahmad Rubani CFX 1 February 24, 2009 17:16
EDC and cell time scale Trine FLUENT 2 May 31, 2007 07:53
scale or full scale justin FLUENT 1 August 4, 2006 22:00
LES inlet length scale f.neilson Main CFD Forum 0 January 31, 2005 14:26

All times are GMT -4. The time now is 08:35.