- **OpenFOAM Running, Solving & CFD**
(*http://www.cfd-online.com/Forums/openfoam-solving/*)

- - **About boundary condition**
(*http://www.cfd-online.com/Forums/openfoam-solving/72827-about-boundary-condition.html*)

About boundary conditionHi,
Now,I calculate 3D-hopeless diamond using rhoCentralFoam. Actually, my computer's calculated speed is very low. Because I use personal computer. So I want to calculate on narrow domain of calculation. Now, calculated domain (front, both-side, back, upper and lower) is 1-chord from a model. Mach number is 0.8. First, I try to calculate on 2D-domain to decide 3D-domain. I think that if no problem on 2D-calculation, I apply to 3D-calculation. But My result of calculation occures trouble. It becomes high pressure on inlet. And velocity around a model hardly drop out. Maybe,I think it is occured due to be narrow domain of caluculation. And this phenomenon is interfering between disturbance from a model and inlet. So, I keep to Mesh number that is keep its domain and I want to do 3D-calculation. So could you tell me the way somehing to do? For example, I think that One of the way makes boundary between inlet and a model. Disturbances from a model are assimilated on boundary. And it keep fixed value form inlet like a magic mirror. Can I make boundary condition at the OpenFOAM? P.S Boundary condition 2D inlet fixed value outlet zerogradient upper and lower walls zerogradient frontandback empty model slip 3D inlet fixed value outlet zerogradient upper and lower walls zerogradient frontandback zerogradient model slip Regerds!! |

Hi SARU
You can make a new boundary condition. Just copy a boundary condition similar to yours and change it and compile it. All the best |

All times are GMT -4. The time now is 13:39. |