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Water Hammer - Pressure Increase Calculation

I want to calculate
Flow Velocity(V) = ft/s
Upstream Pipe Length(L) = ft
Valve Closing Time(t) = s
Inlet Pressure(Pi) = pound/inch2
Pressure Increase(P) = pound/inch2
 



 
   
  


Water Hammer - Pressure Increase:

Pressure Increase:


Flow Velocity:


Upstream Pipe Length:


Valve Closing Time:


Inlet Pressure:


where,
P = Pressure Increase,
V = Flow Velocity,
L = Upstream Pipe Length,
t = Valve Closing Time,
Pi = Inlet Pressure.