# Supersonic Flow through Nozzle

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 May 28, 2008, 02:49 Hi I am trying to simulate #1 New Member   Varun Vikas Join Date: Mar 2009 Posts: 17 Rep Power: 9 Hi I am trying to simulate a supersonic flow enteric a nozze of the shape ----------------- -------------------- ---------------------- -------------------------------------- INLET--------------------------------- OUTLET ---------------------- ---------------------- ----------------- I am using rhoSonicFoam solver. My Inlet is supersonicInlet (U, P, T specified) with flow enetring at Mach 3. My outlet is exptrapolated outlet and I specified the walls to be adiabatic. The solutions converges intitilally. A normal shock wave is formed that moves towards right until it reaches start of the converging section. After that the shock wave start moving towards left (towards inlet) and as it reaches the inlet the solution diverges. Can somebody please help me wtih this. Thanks in advace. Varun

 May 28, 2008, 13:56 The shock wave will move to th #2 Senior Member     Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 12 The shock wave will move to the smalles area of your nozzle in case the pressure inside the nozzle is really smaller than the outside pressure. Than the shock wave is "getting" the pressure to outside niveau. Is it possible that this mechanism is vice-versa and the shock wave moves to bigger areas? Maybe you should check on your pressure? It's just a thought ... __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

 May 29, 2008, 02:31 Thanks Sebastian. I found o #3 New Member   Varun Vikas Join Date: Mar 2009 Posts: 17 Rep Power: 9 Thanks Sebastian. I found out a solution. Extending the domain far from the nozzle inlet/outlet, and applying the boundary conditions at these far boundaries solves the problem.

 September 26, 2009, 11:25 nozzle flow simulation #4 New Member   tunzaw Join Date: Sep 2009 Posts: 3 Rep Power: 9 Dear Varun and all if you have any example of nozzle flow simulation, share me please to tunzawcn@gmail.com. Thanks

May 24, 2012, 00:21
Looking for Qualified freelancer
#5
New Member

Arif
Join Date: Mar 2012
Posts: 15
Rep Power: 6
Looking for qualified freelancer to simulate supersonic flow through C-D nozzle using fluent 6.2.16

Quote:
 Originally Posted by zaw Dear Varun and all if you have any example of nozzle flow simulation, share me please to tunzawcn@gmail.com. Thanks

May 24, 2012, 00:23
#6
New Member

Arif
Join Date: Mar 2012
Posts: 15
Rep Power: 6
Looking for qualified freelancer to simulate supersonic flow through C-D nozzle using fluent 6.2.16

Quote:
 Originally Posted by sega The shock wave will move to the smalles area of your nozzle in case the pressure inside the nozzle is really smaller than the outside pressure. Than the shock wave is "getting" the pressure to outside niveau. Is it possible that this mechanism is vice-versa and the shock wave moves to bigger areas? Maybe you should check on your pressure? It's just a thought ...

October 9, 2012, 03:55
#7
New Member

Robin Debroux
Join Date: Oct 2012
Posts: 22
Rep Power: 6
Hello,
I'm looking for an example of a supersonic flow in a nozzle.
If you have that for me, you contact me at this email address: robdeb90@hotmail.com

Thank you.

Quote:
 Originally Posted by varun Hi I am trying to simulate a supersonic flow enteric a nozze of the shape ----------------- -------------------- ---------------------- -------------------------------------- INLET--------------------------------- OUTLET ---------------------- ---------------------- ----------------- I am using rhoSonicFoam solver. My Inlet is supersonicInlet (U, P, T specified) with flow enetring at Mach 3. My outlet is exptrapolated outlet and I specified the walls to be adiabatic. The solutions converges intitilally. A normal shock wave is formed that moves towards right until it reaches start of the converging section. After that the shock wave start moving towards left (towards inlet) and as it reaches the inlet the solution diverges. Can somebody please help me wtih this. Thanks in advace. Varun

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