Flow Through a Circular Annulus
Flow Through a Circular Annulus
(OP)
Does any body have a way to calculate the flow through a smooth concentric circular annulus (assumming water at STP)?
Also would like to know if there is a way to calculate the flow through an concentric circular annulus which has (what looks like) square threads? I believe that this is some type of pumping ring, which is machined on a throttle bushing in a pump.
Also would like to know if there is a way to calculate the flow through an concentric circular annulus which has (what looks like) square threads? I believe that this is some type of pumping ring, which is machined on a throttle bushing in a pump.





RE: Flow Through a Circular Annulus
David
RE: Flow Through a Circular Annulus
RE: Flow Through a Circular Annulus
Q = 2.48* (d2^2 – d1^2) *V
Q = flow, US gal/minute
d2 = bore
d1 = shaft
V = velocity in feet/second
Using the Petro Eng formula to find Hydraulic Diameter
Hd(eff) = [(d1+d2)^2 *(d2-d1)^3]^0.2
then
Q=19.636* Hd^2 *h^.5 *C
where
h = head in feet
C = orifice coefficient
Q = US gpm
This will let you vary pressures.
Adjust 'C' as needed. I started with Cameron's nozzle data.
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