Centrifugal PuMP
Centrifugal PuMP
Centrifugal PuMP
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Flow in the Discharge Casing<br />
Vaneless Diffuser Continuity:<br />
m AC rbC<br />
2r<br />
b C<br />
r<br />
Cr r2b2<br />
2Cr 2 rb<br />
2 r 2 2 2 r 2<br />
Conservation of angular momentum:<br />
Cx Cx<br />
2r2<br />
r usually Cx<br />
C<br />
C C <br />
Then: x<br />
C Cx<br />
2r2<br />
r<br />
Radius, r <br />
Outlet kinetic energi <br />
tan '2<br />
Cx 2 Cr<br />
2 cons tan<br />
'<br />
rd<br />
tan<br />
'<br />
dr<br />
Then:<br />
<br />
2<br />
r <br />
tan 'ln<br />
r<br />
<br />
<br />
angle of<br />
diffuser<br />
2<br />
r
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