F dimension of force

G gravitational constant 6.67 x 10~n N m2/kg2, Eq. (2-2),

g acceleration due to gravity, [L/t2]

gc conversion factor, [ML/(Ft2]

ID inside diameter of pipe, [L]

L dimension of length

M dimension of mass m mass, [M]

Nx dimensionless group x [—]

t dimension of time

V spatial average velocity, [L/t]

x coordinate direction, [L]

z coordinate direction (measured upward), [L]

ryx shear stress, force in x direction on y surface, [F/L2 = ML/t2]

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