
Grid is staggered...
 Velocity stored normal to faces,
 all other quantities stored at cell centers.
 Ideal for finitevolume formulation.
 Allows local and global conservation of energy and mass.
 Need to interpolate cellcentered values onto faces.
 Need to approximate tangential velocity component.

...not nonstaggered
 All quantities stored at cell centers.
 All velocity components are stored.
 Conservation is approximate.
 Need to interpolate to obtain cellcentered
quantities at faces.
