New meshing with GAMBIT
I'm new using GAMBIT meshing and I'm having some dificulties.
I'm trying to mesh a porous disc, to create a pressure jump, inside a water tank considering a water-air interface.
Any help will be appreciated.
*In Gambit-BC you can choose Porous jump, as surface.
In the User Guide, this kind of BC requires: Face Permeability / Porous Medium Thickness /Pressure-Jump Coefficient
*Define your tank as volume, and split it with your disk. Now the disk belongs to your volume
Thank you -mAx-! I will be back soon with more questions.
I was able to create a volume including the actuator disc. The actuator disc is only half modelled being attached to a symmetry face, in this case v_face_7. The geometry of the actuator is represented as a face.
I first mesh the actuator disc face using tri element and PAVE type.
But when I`m trying to mesh the whole volume I get an error saying:
"Face v-face 7 contains hard lines and must be meshed using PAVE"
The problem is that in the mesh volume menu I don`t have that option!!
Thank yo in advance.
Here are some figures:
Figure 1 - the whole domain; tank and actuator disk.
Figure 2 - v_face 7, includes the symmetry face and the diameter of the actuator disk attached to the symmetry face.
Figure 3 - Actuator disk using Tri elements and type PAVE.
If you need any other figure or information let me know.
Split your volume
>> Create a (YZ) plane, an place it at the x-coordinate where you disk lies.
Split your volume with this plane.
If you are handling real entities it should be ok, if not I will guide you for doing this in virtual.
Once it is splitted, remesh
It works with the advice you gave me. I gave the plane I created a boundary condition type interior, Is this correct?
I want to ask you a other questions:
If your splits are correct, you aren't suppose to define the split surfaces as interior. Gambit will detect them automatically as interior, but won't be available in the pre-postprocessing. (will be "merged")
If you want to use, then yes you can define them as interior
1.Mesh and BC are independant. you can apply BC once your mesh is ready (or before meshing, it makes no difference).
2.you have 2 possibilities:
*a> you split your volume into 2 subvolumes, and define each volume as separated fluid volume (fluid 1 and fluid2), then in fluent you can set up your vof model
*b> you don't change your mesh, but you will define the different phase locations within fluent.
I always choosed way a, it is easier.
If you want b, then I think you need to digg around Grid Region Adaptation & Manage Adaptation Registers
Cleaning-Up Geometry for Airplane
December 28, 2010 —Исправление геометрии и построение расчётной сетки для фюзеляжа самолета в среде ANSYS Workbench 2.0 Материал подготовил Колесник В. (Copyright, 2011, ЗАО "КАДФЕМ Си-Ай-Эс").
CADFEM-CIS Tutorial #11-Cleaning-Up Geometry for Airplane.mp4 :cool:
Thanks again -mAx-! you really help me. Now I'm going to try to set up the model in FLUENT... probably, in the following days, I will be posting a new thread about modelling open channel flow with VOF.
Perhaps, do you know any good tutorial that could guide me to set up and solve my problem in FLUENT?
|All times are GMT -4. The time now is 09:06.|