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THE THEORETICAL FLOW RIPPLE OF AN EXTERNAL GEAR PUMP PDF

65 Pages·2003·1.6832 MB·other
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Description:

The theoretical flow ripple of an external gear pump is studied for pumps of

similar size using different numbers of teeth on the driving and driven gears. In this

work, the flow ripple equation is derived based upon the flow of incompressible fluid

across the changing boundaries of a control volume. From this method, it is shown that

the instantaneous length of action within the gear mesh determines the instantaneous flow

ripple. A numerical and a closed-form approximation are presented for the instantaneous

length of action and it is mentioned that the difference between these two solutions is

negligible.

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