Reply To: Boundary material numbers setting question(Poiseuille3D)
Hello Alice,
1. We use 20% randomly, it could be also 30 or 40%. This delta makes sure that the point at the x coordinate 0 is converted to material number 1.
2. 3 cells in both cases we need to garantie that all cells are converted to MN 1 in the x direction, because there is a cell with MN2 in the negative x-direction.
3. We can make this inlet cylinder arbitrary thick, because with the command rename(2,3,1,inflow) only one layer of cells that borders to MN1 will be renamed to MN3.
4. In OpenLB we have actually only points and we call cells also the points. We do not have here distinction between cells centers and cell surfaces like in FVM meshes.