what's relationship between flow rate and speed
i am simulating a species problem.i know when gas flow rate of the nozzle is a constant,a small diameter will make gas flow faster,but what's relationship between the speed and diameter and nozzle's flow rate?
Thanks for all!!
Re: what's relationship between flow rate and spee
Equation of continuity?
v1 * rho1 * A1 = v2 * rho2 * A2
v = velocity/speed (m/s)
rho = density (Kg/m^3)
A = cross sectional area (m^2)
Assuming rho is constant:
v1 * A1 = v2 * A2
=> Flow rate = v * A = constant
=> if 'd' decreases (because A = pi() * d^2 / 4 => A also decreases) then v increases to keep v * A = constant.
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