Finding Net Pressure force in a pipe

[Mr. A]

I have a pipe that has an inlet (x-direction) and outlet (y-direction) with water flowing through it. I want to find net pressure force in x-direction (at the inlet)

I have momentum flux and areas of the inlet and outlet.

How can I find the net pressure force acting on the inlet? I don't know the pressure acting on the inlet, but I know the area.

 

[FredGarvin]

Take a look here first. You need to look at the impulse momentum of the bend. Most fluids books will have a chapter on the topic.

http://www.ce.utexas.edu/prof/kinnas/319LAB/Applets/Momentum/Momentum.html

http://www.lmnoeng.com/Force/ForceBend.htm

http://www.cartage.org.lb/en/themes/sciences/physics/Mechanics/FluidMechanics/Dynamics/MomentumEquation/MomentumEquation.htm