Why do the grids change their shape in FLUENT

July 1, 2005, 03:22

Hi everyone

I generate hexahedron grids using the map scheme in GAMBIT. When the .msh file is read into the FLUENT, some edges of the grids are in disorder. I refine the grid in GAMBIT for several times, but it does not work.

Does anybody know the reason for the phenomenon? Any suggestion will be appreciate. Thanks a lot.

July 1, 2005, 05:00

does it affect the calculation in fluent?

July 1, 2005, 07:10

Thank you for considering my question. Yes, it is. In the domain where the grid has changed the shape£¬the velocity victor is in disorder , the turbulence viscosity is sometimes difficult to converge. Especially, when displaying the grid of a plane to my boss, he is not satisfied. I am looking forward to any help.

July 1, 2005, 07:36

so the improvement of the mesh in that domain is needed. i have no idea that how to do this. maybe the method of making the geometry and meshing should be changed. hope someone can help you.

July 1, 2005, 08:10

i think u might mesh with other grid-generation software, such as gridgen or icem cfd ,and so on

July 1, 2005, 20:00

Thank you Unfortunately, I have the only one grid-generation software of GAMBIT.

July 1, 2005, 03:22	Why do the grids change their shape in FLUENT	#1
hx Guest Posts: n/a	Hi everyone I generate hexahedron grids using the map scheme in GAMBIT. When the .msh file is read into the FLUENT, some edges of the grids are in disorder. I refine the grid in GAMBIT for several times, but it does not work. Does anybody know the reason for the phenomenon? Any suggestion will be appreciate. Thanks a lot.

July 1, 2005, 05:00	Re: Why do the grids change their shape in FLUENT	#2
Bingzhi Li Guest Posts: n/a	does it affect the calculation in fluent?

July 1, 2005, 07:10	Re: Why do the grids change their shape in FLUENT	#3
hx Guest Posts: n/a	Thank you for considering my question. Yes, it is. In the domain where the grid has changed the shape£¬the velocity victor is in disorder , the turbulence viscosity is sometimes difficult to converge. Especially, when displaying the grid of a plane to my boss, he is not satisfied. I am looking forward to any help.

July 1, 2005, 07:36	Re: Why do the grids change their shape in FLUENT	#4
Bingzhi Li Guest Posts: n/a	so the improvement of the mesh in that domain is needed. i have no idea that how to do this. maybe the method of making the geometry and meshing should be changed. hope someone can help you.

July 1, 2005, 08:10	Re: Why do the grids change their shape in FLUENT	#5
duck Guest Posts: n/a	i think u might mesh with other grid-generation software, such as gridgen or icem cfd ,and so on

July 1, 2005, 20:00	Re: Why do the grids change their shape in FLUENT	#6
hx Guest Posts: n/a	Thank you Unfortunately, I have the only one grid-generation software of GAMBIT.

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