|
[Sponsors] |
May 11, 2008, 16:35 |
Shock tube simulation
|
#1 |
Guest
Posts: n/a
|
Hello,
I am trying to run a shock tube simulation on a tube with a 5m driver section; and 10m driven section (with air on both sections). I am running 2D simulations but with only one cell in the y-direction (normal to the shock direction) and symmetric boundary conditions on the upper and lower walls. Both end walls are set to the wall-boundary condition. The configuration is shown below: ---------*---------------------------- | Driver | Driven | ---------*---------------------------- I am using the following configuration for the solver: coupled, unsteady implicit solver with energy enabled; 2nd order discretization; node based gradient method; density goes as ideal gas; cp etc remain constant; Courant# = 0.5 The problems are: 1. The shock wave is too shallow (over several grid points) 2. The shock wave moves too fast compared to 1-D calculations (almost twice as fast as expected) Clearly, I am messing things up pretty bad. Any help/pointers/sample jou files/example problems/example solutions would be much appreciated. (This is not for any class -- I am trying to figure out the effect of putting a side-chamber in a shock tube) |
|
May 11, 2008, 16:46 |
Re: Shock tube simulation
|
#2 |
Guest
Posts: n/a
|
sorry, the picture did not come out right
-------------------------------------------------- |***driver*********|******driven*******| -------------------------------------------------- |
|
July 8, 2009, 13:31 |
|
#3 |
Member
Nishant Kumar
Join Date: Jun 2009
Posts: 32
Rep Power: 17 |
Hi Harish,
Can you please send me the 1D code for shock tube problem at babuu.nishu@gmail.com? I need it for my research. Thanks a lot Nishant |
|
July 29, 2009, 13:52 |
|
#4 |
New Member
Join Date: Jul 2009
Posts: 1
Rep Power: 0 |
Hi Harish,
I did such a validation a few years ago with Fluent 6.2 or 6.3 I obtained similar results comparing the coupled-implicit (today refered as density based implicit) to the coupled-explicit (previously called Rampant and today refered as density based explicit). Both matched the exact solution pretty good. Note that I more than one cell in the y direction. I can provide you with the msh and jou if you still need it. |
|
August 3, 2012, 22:04 |
|
#5 |
New Member
Ali Jafarizade
Join Date: May 2009
Posts: 22
Rep Power: 17 |
hi tramber
i do really need your mesh and journal files of the shock tube. is it possible for you to mail me what you have such as mesh file and journal files and etc? i will be a very good help for me and i do appreciate your help. my email is jafarizade@yahoo.com thanks in advance! |
|
January 25, 2014, 02:20 |
|
#6 |
New Member
Charisma Joseph
Join Date: Jan 2014
Posts: 2
Rep Power: 0 |
hey tramber
can you please mail me those files too? the msh file and journal files. my email is charismaannjoseph@gmail.com thank you. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
shock tube!!! | showwa | FLUENT | 12 | May 20, 2012 19:14 |
shock tube | Shuo | Main CFD Forum | 5 | August 16, 2007 23:54 |
shock tube | tal | FLUENT | 0 | June 23, 2007 21:25 |
Shock Tube | Pooria Sattari | Main CFD Forum | 5 | June 14, 2005 00:55 |
shock tube | anin | Main CFD Forum | 1 | August 4, 2001 22:58 |