How to implement block-to-block B.C?
 

Dear everyone:

I want to write a program dealing with multiblock,but I don't known how to implement block-to-block B.C,especially when two block have different grids.

All comments are much appreciated!

Re: How to implement block-to-block B.C?
 

Hello Zhao,

You can firstly generate two layers of ghost cells on every boundaries for each block. After that, what you need is to get the information for those halo cells from other blocks by either interpolation or transformation.

Good luck

Li

Re: How to implement block-to-block B.C?
 

or go straight to unstructured index addressing in your code so that there is nor boundary between blocks at all - there are just like any other internal cell faces even if they not not matched one-by-one.

Re: How to implement block-to-block B.C?
 

This is surely the simplest solution. But, besides the quadrilateral elements obtained, what advantages will I have if I use this kind of connectivity?