How to create a no flow boundary?

[mar...@mymail.mines.edu]

Hello All,

I'm trying to set no flow boundary conditions on the top and bottom for my structured grid using the FLOW_CONDITION block. I haven't been able to find a way that works. Has anyone else done this in the past and can share their FLOW_CONDITION block?

Thanks,

Kara

[Xuehang Song]

Hi Kara，

You don't need to specify a no-flow condition. Just don't assign any other boundary conditions on the region you want no-flow, it will automatically be no-flow.

Thank you.

Xuehang

[Stein, Emily R]

Hi Kara,

 

No flow boundary conditions are the default in PFLOTRAN, so you don’t need to set them up at all. However, you can do this (RICHARDS mode):

 

FLOW_CONDITIONS noflow

  TYPE

    FLUX NEUMANN

  /

  FLUX 0.d0 m/s

END

 

BOUNDARY_CONDITION top

  FLOW_CONDITION noflow

  REGION top

END

 

Etc. – assuming you have REGION top defined correctly.

 

Emily

[Hammond, Glenn E]

Xuehang’s approach is the recommended approach.