K_Sharp_Edged_Pipe

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K_Sharp_edged_Pipe_Inlet

The resistance coefficient for a sharped-edged pipe inlet is 0.5. This function requires the pipe diameter as an input, but it is not used in the determination of the resistance coefficient.

Example:
$UnitSystem SI K Pa J
$VarInfo DELTAP units=Pa
$VarInfo h_L units=m
D=0.10 [m]
K=k_sharp_edged_pipe_inlet(D)
V_tilde=10 [m/s]
rho=1000 [kg/m^3]
g=g#
h_L=K*V_tilde^2/(2*g)
DELTAP=h_L*rho*g

{Solution:
DELTAP=25000 [Pa]
h_L=2.549 [m]
K=0.5
}

Notes:
The K_Rounded_Pipe_Inlet function could also be used by supplying a radius of 0.

Reference:
Page A-29 of Crane, "Flow of Fluids through Valves, Fittings and pipe", Technical Paper No. 410M, Crane Co, NY, 1979

Minor Losses Index