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Supersonic Flow through Nozzle

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Old   May 28, 2008, 02:49
Default Hi I am trying to simulate
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Varun Vikas
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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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Old   May 28, 2008, 13:56
Default The shock wave will move to th
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Sebastian Gatzka
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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 ...
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Old   May 29, 2008, 02:31
Default Thanks Sebastian. I found o
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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.
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Old   September 26, 2009, 11:25
Default nozzle flow simulation
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zaw
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Dear Varun and all
if you have any example of nozzle flow simulation, share me please to tunzawcn@gmail.com.
Thanks
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Old   May 24, 2012, 00:21
Default Looking for Qualified freelancer
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Looking for qualified freelancer to simulate supersonic flow through C-D nozzle using fluent 6.2.16

please contact upal_arif@yahoo.com



Quote:
Originally Posted by zaw View Post
Dear Varun and all
if you have any example of nozzle flow simulation, share me please to tunzawcn@gmail.com.
Thanks
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Old   May 24, 2012, 00:23
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Looking for qualified freelancer to simulate supersonic flow through C-D nozzle using fluent 6.2.16

please contact upal_arif@yahoo.com










Quote:
Originally Posted by sega View Post
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 ...
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Old   October 9, 2012, 03:55
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Robin Debroux
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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 View Post
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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