a simple Boundary condition question

prapanj · March 16, 2009, 08:01

I am trying to solve compressible flow over a sphere. There are two spheres. One defining the domain and the other the object in the flow field. The smaller sphere has a wall boundary condition. Now the outer sphere: How do I set the boundary for this sphere. I tried using inletOutlet. But the run crashes. Since it is a hyperbolic problem there should be a boundary condition that sets a value based on direction right?

Am I missing something here?

Thank you
Prapanj

nonyear · March 16, 2009, 08:51

hi, prapanj.
I am not familar with compressible flow, i searched the fluent's User's Guide(version 6.3 )and found that "7.9 Pressure Far-Field Boundary Conditions" may be helpful.

March 16, 2009, 08:01	a simple Boundary condition question	#1
prapanj Senior Member Prapanch Nair Join Date: Mar 2009 Location: Bangalore, India Posts: 105 Rep Power: 17	I am trying to solve compressible flow over a sphere. There are two spheres. One defining the domain and the other the object in the flow field. The smaller sphere has a wall boundary condition. Now the outer sphere: How do I set the boundary for this sphere. I tried using inletOutlet. But the run crashes. Since it is a hyperbolic problem there should be a boundary condition that sets a value based on direction right? Am I missing something here? Thank you Prapanj

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March 16, 2009, 08:51		#2
nonyear New Member Nan Zhang Join Date: Mar 2009 Location: Beijing Posts: 4 Rep Power: 17	hi, prapanj. I am not familar with compressible flow, i searched the fluent's User's Guide(version 6.3 )and found that "7.9 Pressure Far-Field Boundary Conditions" may be helpful.