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-   -   detonation wave simulation (http://www.cfd-online.com/Forums/fluent/49385-detonation-wave-simulation.html)

Krish September 29, 2008 17:59

detonation wave simulation
 
How to simulate detonation wave in a cylindrical duct? please give me some idea. I am new to fluent.

Actually, until now, i made geometry of the cylindrical duct, generated the mesh and checked it in fluent for its validity. the mesh is ok. The inlet condition is 1 bar, 288K and i am suposed to use fuel as Hydrogen and Oxygen. Does fluent has all these chemical reaction details within it? How should i use them?

my CJ temperature is found to be 3600K.

now i need to give the boundary condition, select the solver and test it. please guide me with suitable boundary condition and solvers. I dont see much information pertaining to detonation simulation in fluent.

should i simulate shock wave first and then go for chemistry? please explain how to simulate shock wave too. I tried with boundary condition of inlet=10 bar and exit=1 bar but the cylindrical duct did not show any shock wave propagation during transiet simulation.

please help. thanks in advance

Radu May 13, 2009 13:23

Pulse detonation
 
Hi Krish
Have you managed to find a solution for your problem yet? I also study the problem of hydrogen detonation in a closed-end cylinder. I have never thought to use Fluent... I now try to elaborate a code, in Fortran, using the method of characteristics, but is a LOT of work. Since I need a solution for the problem relatively quick, I'm thinking to use Fluent. I see that your post is rather old, and maybe you've already found a solution. Could you please contact me if you wish to exchange information about the topic? I would appreciate that. Thank you. Radu

vikram June 8, 2010 15:01

Hello Radu & Krish,

I am working on the same thing as well. Maybe we can collaborate our efforts in Fluent to make progress? Please get back to me.

Thanks.

Vikram.

ssixr August 4, 2010 13:04

to radu,
 
hi i am also working in pulse detonation engine area...trying to simulate detonation...can u help me?
thank you

stumpy August 6, 2010 17:19

An explicit (in time) solver is usually the code of choice for detonation. Have you looked at ANSYS AUTODYN?

ssixr August 7, 2010 01:50

thank u stumpy...i ll chk out autodyn and post my comments..thank u

ssixr October 14, 2010 02:32

detonation
 
hello stumpy
thanks for your help..for flame propagation transient model should be used.i have another doubt, how to fill a tank(2d model) with a any fluid/premixed mixture.? any help.?
truly
sudhir


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