CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

Validity of Continuum Assumption?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 11, 2001, 14:52
Default Validity of Continuum Assumption?
  #1
Richard
Guest
 
Posts: n/a
Hi --

I am aware that the mean free path (MFP) of molecules is the limiting factor in considering a fluid to be a continuum. However, most of the references to MFP calculations point to ideal gas analysis. Any suggestions on finding some representative values of the MFP for liquid water over a range of (P,T) data?

I am evaluating the appropriateness of some recent attempts to numerically model "wedge flow" in some crevices on the scale of 10-50 nm using non-modified NS descriptions. Since the molecular size of H2O is about 0.5 nm, this seems (at best) to be in the granular flow regime.

Thanks in advance! Richard
  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
Continuum Validity karananand Main CFD Forum 4 March 22, 2010 10:36
continuum or rarefied? Dave Main CFD Forum 5 March 9, 2007 15:16
Problem with ambit Lio FLUENT 4 July 6, 2004 09:23
How to solve another continuum and momentum eqn? west_wing FLUENT 0 August 25, 2003 11:00
setting boundary and continuum in GAMBIT Hakeem FLUENT 0 August 14, 2000 16:32


All times are GMT -4. The time now is 17:51.