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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: Taataa

Forum: OpenFOAM Running, Solving & CFD January 16, 2018, 10:51

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa It sure is possible. There are couple of... It sure is possible. There are couple of approaches, the most flexible one using coded. Here what I did to achieve a parabolic boundary condition for velocity: inlet { type ...

Forum: OpenFOAM Running, Solving & CFD December 24, 2017, 23:57

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa It shows that there is problem in your solution... It shows that there is problem in your solution and/or schemes. I would suggest you to use the inletOutlet play with solution and schemes parameters like reduce the tolerances to 1e-8 for all the...

Forum: OpenFOAM Running, Solving & CFD December 24, 2017, 11:29

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa Something is not quit right with you BC. The way... Something is not quit right with you BC. The way I see it, you defined the inlet as a wall then you defined the outlet as an outlet but with a fixed temperature which doesn't sound physical. If it's...

Forum: OpenFOAM Running, Solving & CFD December 17, 2017, 12:22

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa I haven't done heat transfer simulations so I... I haven't done heat transfer simulations so I can't give you a definite answer but by some googling I found this (http://caefn.com/openfoam/solvers-buoyantboussinesqpimplefoam) website that gives you...

Forum: OpenFOAM Running, Solving & CFD December 12, 2017, 12:56

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa Well, that's the difficulty of meshing, you... Well, that's the difficulty of meshing, you should find a balance between accuracy and run time. What people usually do is mesh convergence study. It's the formal way of finding the smallest mesh...

Forum: OpenFOAM Running, Solving & CFD December 11, 2017, 15:22

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa I didn't notice, your case is 3D and it's... I didn't notice, your case is 3D and it's relatively huge! I think the main problem is the mesh, the aspect ratio is too high 63!, you should try to keep it close to 1. Most importantly, there...

Forum: OpenFOAM Running, Solving & CFD December 10, 2017, 21:29

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa Sounds good. Give it a try and see how does it... Sounds good. Give it a try and see how does it change the results. Typically a 0.7 relaxation factor for all the fields except for pressure is good. You can find some good values using foamSearch...

Forum: OpenFOAM Running, Solving & CFD December 10, 2017, 14:40

Replies: 22 Velocity Loss in simpleFoam, Turbulent Flow Views: 2,119 Posted By Taataa There are couple of problems with your case.... There are couple of problems with your case. Boundary conditions at the outlet are wrong. When you prescribe pressure at a boundary you should use pressureInletOutletVelocity for U and inletOutlet...

Showing results 1 to 8 of 8

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