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

do me a favour

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 11, 2002, 11:31
Default do me a favour
  #1
bjcz
Guest
 
Posts: n/a
Hi, Friends,

who know the expression of exact/analytical solution of the following problem? (or in which book and paper i can find the formula?)

this is a acoustic/aeroacoustic problem:

========================

in uniform flow with Mach number of 0.5, a two-dimensional pressure pulse is introduced somewhere in the mean flow, and then the pulse propagates in the mean flow

the pulse is as follows

P = A*Exp{ (-ln(2)/a**2)*[(x-x0)**2 +(y-y0)**2] }

where P represents pressure. A is amplitude of the pulse. a is a constant. (x0,y0) is the position of the introduced pressure pulse.

what is the analytical solution of propagation of the pulse?

======================

this problem's analytical solution must exist.It seems that it is a simple problem because some people compare their computational results with the analytical solution. unfortunately, i don't know that.

looking forward to reply at your earliest convenience.

thanks in advance

  Reply With Quote

Old   February 12, 2002, 02:35
Default Re: do me a favour
  #2
Markus Lummer
Guest
 
Posts: n/a
Have a look at:

Tam, C.K.W.; Webb, J.C. : "Dispersion-Relation-Preserving Finite Difference Schemes for Computational Acoustics.", J. Comp. Phy. 107, 262-281 (1993)

Perhaps you will find what you want on pages 280-281.

Hope this helps

Markus
  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
OpenFoam for MS windows Madhav Gentela (Gentela) OpenFOAM Installation 16 April 14, 2009 02:05
[OpenFOAM] Paraview 330dev egp ParaView 7 May 21, 2008 22:12


All times are GMT -4. The time now is 11:20.