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

Navier Stokes Equations

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

LinkBack Thread Tools Display Modes
Old   June 26, 2000, 17:37
Default Navier Stokes Equations
Posts: n/a
if CFD is such a great technique how come it can't: 1. by pass transition 2. allow asymmetries in symmetric flowfields 3. effectively useless at predicting flow separation

and also how come not much work is done with the vorticity transport equations which are much simpler due to the fact that for an incompressible flow pressures can be neglected.
  Reply With Quote

Old   June 26, 2000, 19:22
Default Re: Navier Stokes Equations
John C. Chien
Posts: n/a
(1). Interesting questions. (2). The fact is cfd is not a variation of California Flowers in Desert. (3). It does not exist in nature. (4). It is also not something you can find in the Chinese Food Department in the oriental supermarket. (5). And most important of all, there is no need to get a cfd license to get married, to learn how to drive, or even to act as a cfd expert. (6). With cfd codes everywhere, the need is to become a non-expert in cfd, instead of more experts. (7). Before I know how to talk to the cfd codes, it is hard to answer your questions. Sorry !
  Reply With Quote

Old   June 29, 2000, 09:31
Default Re: Navier Stokes Equations
Ioannis Dotsikas
Posts: n/a
CFD is still developing. The race is not almost done. By the way CFD is usually only a approximation and nothing more. I have never seen in real life a symmetric field! Have you ever seen one? Itīs only convenient to treat a flow as a symmetric field. Try to read throught the lines!!

You might be right. CFD might not be such a great thing. In such a case try to concentrate your activities to managment, try to avoid CFD, people who are involved with CFD or decisions conserning CFD. I hope I helped you further

good luck.

  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
4th order Runge-Kutte & uncoupled method Navier Stokes equations misabel Main CFD Forum 0 February 10, 2010 07:06
Navier Stokes equations in rotation frame..? vinayender Main CFD Forum 2 December 1, 2009 01:12
LBM Vs navier stokes equations in turbulent fluid flow modeling. sharad_shevate Main CFD Forum 0 August 3, 2009 01:25
Presure range of the Navier Stokes Equations Dr. Tsimento Main CFD Forum 7 May 23, 2001 10:12
Computational complexity of Navier Stokes equations Marco Ellero Main CFD Forum 5 May 5, 1999 21:07

All times are GMT -4. The time now is 01:06.