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

Shock Wave

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 18, 2009, 06:47
Default Shock Wave
  #1
New Member
 
Join Date: Apr 2009
Posts: 16
Rep Power: 8
usker is on a distinguished road
Hello Everybody,

I am interested in simulating and visualizing the shock waves in the air with propagating spray.
Could anyone simulate and visualize a shock wave with Star-CD?

Thanks
usker is offline   Reply With Quote

Old   May 20, 2009, 02:51
Default
  #2
Member
 
Anton Lyaskin
Join Date: Mar 2009
Location: Samara, Russia
Posts: 66
Rep Power: 8
A_Lyaskin is on a distinguished road
Sure you can simulate a shock wave - Star-CD Validation Test Cases pack has an example of shock tube simulation.

For visualization I can recommend plotting magnitude of density gradient (or density gradient squared - you can try what looks best). When plotted in grayscale it can give you nice Schliren-like pictures. Or you can plot an isosurface in 3D.
A_Lyaskin is offline   Reply With Quote

Old   May 20, 2009, 03:38
Default
  #3
New Member
 
Join Date: Apr 2009
Posts: 16
Rep Power: 8
usker is on a distinguished road
Thank you very much Anton,

That's exactly what I was looking for.

And please advise, where can I get Star-CD Validation Test Cases pack?
usker is offline   Reply With Quote

Old   May 20, 2009, 06:42
Default
  #4
Member
 
Anton Lyaskin
Join Date: Mar 2009
Location: Samara, Russia
Posts: 66
Rep Power: 8
A_Lyaskin is on a distinguished road
I've got it from my Star-CD vendor, it occupies 1 CD. I don't have it at hand right now to tell you the size of the shock tube case - may be I'll be able to send it to you via e-mail.
A_Lyaskin is offline   Reply With Quote

Old   May 25, 2009, 07:05
Default
  #5
New Member
 
Join Date: Apr 2009
Posts: 16
Rep Power: 8
usker is on a distinguished road
Quote:
Originally Posted by A_Lyaskin View Post
Sure you can simulate a shock wave - Star-CD Validation Test Cases pack has an example of shock tube simulation.

For visualization I can recommend plotting magnitude of density gradient (or density gradient squared - you can try what looks best). When plotted in grayscale it can give you nice Schliren-like pictures. Or you can plot an isosurface in 3D.
Anton,
When you say i need to plot the magnitude of density gradient (or density gradient squared), it means that I first calculate the density, as one of my scalars, and then in post processing I calculate density gradient (or density gradient squared) and plot it in Registar 4, then I plot it in grayscale and get Schlieren like images. Is it correct?

Thank you so much
usker is offline   Reply With Quote

Old   May 25, 2009, 14:13
Default
  #6
Member
 
Anton Lyaskin
Join Date: Mar 2009
Location: Samara, Russia
Posts: 66
Rep Power: 8
A_Lyaskin is on a distinguished road
Yes, you're right. BTW, I've found my Validation Test Cases CD. The shock tube example takes only 150 Kb when compressed
A_Lyaskin is offline   Reply With Quote

Old   May 25, 2009, 19:43
Default
  #7
New Member
 
Join Date: Apr 2009
Posts: 16
Rep Power: 8
usker is on a distinguished road
Quote:
Originally Posted by A_Lyaskin View Post
Yes, you're right. BTW, I've found my Validation Test Cases CD. The shock tube example takes only 150 Kb when compressed
Dear Anton,
I would really appreciate if you send me the shock tube example file to this e-mail: cadcamclass@gmail.com

Thanks a lot
usker is offline   Reply With Quote

Old   May 26, 2009, 11:35
Default
  #8
Member
 
Anton Lyaskin
Join Date: Mar 2009
Location: Samara, Russia
Posts: 66
Rep Power: 8
A_Lyaskin is on a distinguished road
Ok, I've sent it. It's a simple 1D case, so don't expect much from visualization point of view, it's just to demonstrate simulation procedure.
A_Lyaskin is offline   Reply With Quote

Old   July 8, 2009, 13:22
Default
  #9
Member
 
Nishant Kumar
Join Date: Jun 2009
Posts: 32
Rep Power: 8
Nishu is on a distinguished road
Can you please forward me the codes at babuu.nishu@gmail.com
Nishu 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
shock wave boundary layer interaction anand FLUENT 1 December 15, 2010 07:33
Will compression waves overtake a moving shock? GRA Main CFD Forum 2 October 19, 2006 00:24
Question about the shock wave nucharin CFX 2 January 27, 2005 05:44
Question about the shock wave in CFX software nucharin Main CFD Forum 1 January 25, 2005 09:26
shock wave propagation Chetan FLUENT 1 April 20, 2004 14:45


All times are GMT -4. The time now is 11:40.