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

circular shock

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

LinkBack Thread Tools Display Modes
Old   March 30, 1999, 15:20
Default circular shock
linhbao tran
Posts: n/a

the problem is similar to that of a shock tube. it is initialized as follow: inside the circle, rhoI, pI, u=v=0; outside the circle, rhoO, pO, u=v=0 (pI > pO, the other way around is also interesting). any reference/suggestion is appreciated. thanks.

  Reply With Quote

Old   March 31, 1999, 16:33
Default Re: circular shock
Patrick Godon
Posts: n/a
Hi there, I am not quite sure what the problem is, since you don't give much details, neither is clear waht you meant to ask. I would suggest to write the equations in polar coordinates (r, theta), and if the flow is not rotating and is axisymmetric, then just solve for the radial equation like for the shock tube test. The only difference should be terms due to the geometry. So if you have a solver for the shock tube test (one dimensional and cartesian) you should only add terms for the distortion of the geometry in each equation (and maybe a factor 1/r or so). My guess is that a shock propagating inwards will amplified while a shock propagating outwards will decrease in amplitude (inwards=to smaller radii, outwards=to larger radii). If the problem is really 3D then you need spherical coordinates, etc... and I would expect the same behaviour. P.
  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
benchmark: flow over a circular cylinder goodegg Main CFD Forum 12 January 22, 2013 12:47
HLL Riemann Shock Tube Matlab Problem Luke F Main CFD Forum 1 July 7, 2009 13:44
Shock Fitting Craig FLUENT 1 April 24, 2008 17:06
Will compression waves overtake a moving shock? GRA Main CFD Forum 2 October 19, 2006 00:24
Normal shock waves Fernando Velasco Main CFD Forum 1 April 6, 2000 14:10

All times are GMT -4. The time now is 14:44.