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

what is the condition to use the wave equation?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 26, 2010, 04:25
Default what is the condition to use the wave equation?
  #1
New Member
 
famo
Join Date: Jan 2010
Posts: 1
Rep Power: 0
mmff is on a distinguished road
Hello everybody!
I am searchig for this question: what is the condition to use the wave equation? or what is the difference between the wave equation and navier- stockes equation? I could derive the wave equation from the navier-stockes equations with this hypothesis that the effect of viscosity is zero, but i want to know that for example can we use the wave equation for all mach numbers? I explain more: for example in blast or explosion that we have shock wave that the mach number is grater than 1 and the pressure gradient is very high can we use wave equation or we mast use navier stockes equations only to capture this phenomena? I need to have more mathematic informations,for examle this answer that up to 0.99 mach number we can use wave equatin and for upper this value we cannot use wav equation and also information about pressure gradient condition and ets ....
Regards
mmff is offline   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
Open boundary condition for 1d euler equation? Ashley Main CFD Forum 3 August 3, 2009 04:05
Poisson equation for pressure homogeneous boundary condition RenardP Main CFD Forum 1 July 13, 2009 10:01
Need help:about energy equation in CFX Stein CFX 4 July 2, 2009 22:31
Assistance with one-way wave equation Frank Main CFD Forum 5 March 14, 2007 11:56
Open Boundary Condition for Diffusion Equation wen long Main CFD Forum 0 January 21, 2007 10:43


All times are GMT -4. The time now is 08:14.