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Pipe bends and thrust blocks forces due to fluid velocity and internal pressure
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The resulting force on a thrust block due to fluid velocity and pressure in a bend
can be expressed as
F = 2 A (ρv2/g + p) cos(θ/2) (1)
where
F = resulting force acting on the pipe bend (N, lb)
A = area of pipe (m2, ft2)
ρ = density of the fluid (kg/m3, lb/ft3)
v = velocity of the fluid (m/s, ft/s)
g = acceleration due to gravity (9.81 m/s2, 32.2 ft/s2)
p = pressure in pipe (kPa, lb/ft2)
θ = angle between pipes - bend angle
The angle the resulting force F makes upstream line of the bend can be expressed as
α = θ/2 (2)
where
α = angle the resulting force makes with the incoming pipe to the bend
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