- **OpenFOAM Running, Solving & CFD**
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- - **a simple Boundary condition question**
(*https://www.cfd-online.com/Forums/openfoam-solving/62647-simple-boundary-condition-question.html*)

a simple Boundary condition questionI 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 |

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. |

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