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

3D characteristc methods

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 23, 1999, 19:56
Default 3D characteristc methods
  #1
llowen
Guest
 
Posts: n/a
What can anybody tell me about 3D characteristic methods? Are they practical? Are they any faster than solving the Euler equations? Surely there is a savings in grid generation. I'm wondering if there's any possibility to use such an approach to guide or optimize the design of supersonic vehical surfaces.
  Reply With Quote

Old   January 29, 1999, 15:51
Default Re: 3D characteristc methods
  #2
John C. Chien
Guest
 
Posts: n/a
2-D and 3-D method of characteristics have been used in external flow, internal flow and aerodynamic testing for many years. Mehtod of characteristic is an exact method. It can be implemented using graphic method or numerical method. The limitation is: it is not for subsonic flow. The method of characteristics has been used to guide the design of more accurate and advanced schemes for solving the Euler equations. ( Numerical methods for Euler equations are approximate in nature, and the shock is captured in an approximate sense. Numerical solutions of Euler equations are not truely inviscid, because of the viscous effect created by the numerical diffusion or added artificial diffusion terms.) Thinking about re-inventing the wheel? It may not be a bad idea after all. Things are being re-invented all the time. ( I think 'CFD mechanics' was invented by the old generation for the people in the computer age.)
  Reply With Quote

Old   January 31, 1999, 13:32
Default Re: 3D characteristc methods
  #3
Amin Gulamhussein
Guest
 
Posts: n/a
A good reference for MOC I would recommend is Gas Dynamics (Vol II) by M.J. Zucrow and J.D. Hoffman.
  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
About multigrid methods Lionel S. Main CFD Forum 10 April 20, 2007 09:22
comments on FDM, FEM, FVM, SM, SEM, DSEM, BEM kenn Main CFD Forum 2 July 18, 2004 18:28
Vortex Methods. luiz Main CFD Forum 2 October 27, 2003 11:47
Intl Conf Computational Methods in Fluid Power Jacek Stecki Main CFD Forum 0 November 10, 2002 06:49
Projection methods ZY Sun Main CFD Forum 9 September 15, 2000 18:00


All times are GMT -4. The time now is 11:11.