CFD Online URL
[Sponsors]
Home > Forums > Main CFD Forum

math description of CFD

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 28, 2002, 10:43
Default math description of CFD
  #1
John
Guest
 
Posts: n/a
Hi, Can anyone give me a very brief mathematical explaination description of the CFD solution process, like does the code start by solving the continuity eqn then solve the navier-stokes eqn and from there solve the energy eqn, etc. From initial conditions to solve a reacting flow.(using FVM). Point form explaination would be great, maybe that is too much i don't know??

Thanks in advance,

John.
  Reply With Quote

Old   November 28, 2002, 11:18
Default Re: math description of CFD
  #2
prasat
Guest
 
Posts: n/a
In reacting flows you have navier-stokes equation,continuity equation,energy equation,convection diffusion reaction equation for each species. Now you have initial velocity, you solve for velocity and pressure using Navier-stokes and continuity equation. Now energy equation is to be solved for temeparature of the reacive species you are say a reaction A + B ------->C so Ta,Tb and Tc is be get by energy equation. Now using CDRE you have to solve for Ca,Cb,Cc but this will need some initial condition in which you define how your A and B species are spread in your domain. I think i answered your question the CDRE is some like NAvier-stokes eqiation but insted viscosity you have diffusivity, instead of Re you have Sc. And the nonlinearity is in Reaction equation. The easiest way is to assume isothermal rection. bye prasat
  Reply With Quote

Old   December 13, 2002, 03:34
Default Re: math description of CFD
  #3
Holidays
Guest
 
Posts: n/a
Best concise and easy-to-read book is that by Versteeg & Malalasekera, Longman, (1995).
  Reply With Quote

Reply

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
please help me for general description of CFD Jiyeon Main CFD Forum 3 April 7, 2009 17:20
CFD Wiki - We Need More Help Jonas Larsson Main CFD Forum 13 September 13, 2005 18:36
ASME CFD Symposium, Atlanta, July 2001 Chris R. Kleijn Main CFD Forum 0 August 21, 2000 05:49
PC vs. Workstation Tim Franke Main CFD Forum 5 September 29, 1999 16:01
Which is better to develop in-house CFD code or to buy a available CFD package. Tareq Al-shaalan Main CFD Forum 10 June 13, 1999 00:27


All times are GMT -4. The time now is 15:21.