spatial Boundary condition, cartesian to cylindrical, groovyBC
 

Hello all,

I am new to OpenFoam, I hope that you may help me. I have run a 3D free-jet

I created the mesh as two concentric cylinders (please see attached figure), where the left-side of the interior cylinder is the boundary condition for the velocity. This configuration runs well but I want to modify my mesh.

My group uses another code which only works with a structured mesh. I need to compare both codes.

I want to set up a boundary condition using an "if statement" to transfer the cartesian coordinate to a cylindrical . The way that I implemented it on other code is shown in the attached image (python). Basically, if the radius is smaller than a value, the velocity profile will be set up to that equation .

The velocity depends on time, I implemented that boundary condition using a groovyBC ( I am using the version 2.3.1.)

Any suggestion how can I implement the spatial boundary condition ?








using two cylinder

You can either use codedFixedValue to construct it on the fly or make one from scratch following instruction here.

Hi,

As long as you are using groovyBC, why not try using the examples, the circulatingSplash example seems to include some of the functionality you may want to use.

Regards,
Tom