how to simulate velocity field of supersonic gas (400m/s) from a nozzle to a chamber

CYMa · November 23, 2009, 08:50

i want to simulate velocity field of supersonic gas (400m/s) from a nozzle to a chamber. Some friends may give me some advice? especially about the setting of boundary conditions...thank you very much ahead...

askjak · November 25, 2009, 05:48

I have done something very similar. I got inspired by looking at tutorials/compressible/rhoCentralFoam/LadenburgJet60psi (2D axi-symmetric).

CYMa · November 26, 2009, 04:26

Thank you very much!

I will have a try with your method....
These days, i am also trying to solve it with other methords.
I used sonicFoam to get an acceptable result. However, i also obtained acceptable results considering the flow as incompressible one with some steady turbulent solver...i don't know why...

mihir1310 · December 15, 2009, 22:31

I ve been trying the same problem too .. Can anyone discuss the nature of results ?? I ve been using Addy's analytical expressions for location of Mach disc as a benchmark ....

November 23, 2009, 08:50	how to simulate velocity field of supersonic gas (400m/s) from a nozzle to a chamber	#1
CYMa New Member X.G. Li Join Date: Nov 2009 Location: Bremen, Germany Posts: 19 Rep Power: 17	i want to simulate velocity field of supersonic gas (400m/s) from a nozzle to a chamber. Some friends may give me some advice? especially about the setting of boundary conditions...thank you very much ahead...

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November 25, 2009, 05:48		#2
askjak New Member Join Date: Apr 2009 Posts: 26 Rep Power: 17	I have done something very similar. I got inspired by looking at tutorials/compressible/rhoCentralFoam/LadenburgJet60psi (2D axi-symmetric).

November 26, 2009, 04:26		#3
CYMa New Member X.G. Li Join Date: Nov 2009 Location: Bremen, Germany Posts: 19 Rep Power: 17	Thank you very much! I will have a try with your method.... These days, i am also trying to solve it with other methords. I used sonicFoam to get an acceptable result. However, i also obtained acceptable results considering the flow as incompressible one with some steady turbulent solver...i don't know why...

December 15, 2009, 22:31		#4
mihir1310 Member Mihir Join Date: Mar 2009 Posts: 40 Rep Power: 17	I ve been trying the same problem too .. Can anyone discuss the nature of results ?? I ve been using Addy's analytical expressions for location of Mach disc as a benchmark ....