tended to orientate faces randomly depending on the predominance of inwards or outwards facing surfaces prior to use. For Blender 2.8+ this is no longer the case, Recalculate Inwards and Recalculate Outwards forceably re-orientate selections based on the option selected, either in or out but not...
The marker-and-cell (MAC) velocity field is a grid data structure where instead of having all (u,v,w)(u,v,w) velocity components located on a grid cell center, they are located on the centers of their respective grid cell faces. We will use the half-index notation discussed in the ...