Conclusions (for both geometry)
Kcontraction = Kexpansion for low Re.
K increases as the ratio of Hentrance:Hexit (for sudden expansion case) increases.
K increases as the ratio of Hexit:Hentrance (for sudden expansion case) decreases.
At Re _ 100, K increases with Re for sudden contraction cases.
At Re _ 0.1, for expansion cases, K starts to decrease as Re goes up
The values of Resistance Coefficient (K) increases with Refinement.