when the velocity increases the pressure decreases , and vice versa , in such a manner that their product is constant along the same stream line
i.e : P x V = cons.
along a stream line : P1 x V1 = P2 x V2 = P3 x V3 = cons...
1 - Bernoulli's equation can be applied only along a stream line , can't be applied between a point these two points
2 - try to calculate the vortex strength , and integrate them to get the forces , then divide by the areas ..to get the resultant pressure.