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TECHNICAL PAPERS

The Theoretical Flow Ripple of an External Gear Pump

[+] Author and Article Information
Noah D. Manring, Suresh B. Kasaragadda

Mechanical and Aerospace Engineering Department, University of Missouri–Columbia, Columbia, MO 65211

J. Dyn. Sys., Meas., Control 125(3), 396-404 (Sep 18, 2003) (9 pages) doi:10.1115/1.1592193 History: Received February 01, 2002; Revised November 06, 2002; Online September 18, 2003
Copyright © 2003 by ASME
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References

Figures

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Gear pump configuration
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Control volume of the discharge chamber
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Gear mesh geometry at the first point of tooth contact
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Gear mesh geometry at an intermediate point of tooth contact
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Gear pumps of the same displacement designed with different numbers of teeth on the driving and driven gears
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Dimensionless center distance variation for gear pumps of the same displacement utilizing various combinations of teeth on the driving and driven gears
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The theoretical flow pulse solution (Eq. (7)) for the pumps shown in Fig. 5. (Note: these results have been normalized using the average flow rate of the pump. As the number of teeth on the driving gear increases, the flow pulse amplitude is reduced.)
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The theoretical flow pulse amplitude (Eq. (21)) normalized by the average flow rate of the pump. As the number of teeth on the driving gear increases, the flow pulse amplitude is reduced.
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FFT results for the flow pulse of pumps with equal numbers of teeth on the driving and driven gear
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FFT results for the flow pulse of pumps with 13 teeth on the driving gear 13 to 16 teeth on the driven gear
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FFT results for the flow pulse of pumps with 14 teeth on the driving gear 13 to 16 teeth on the driven gear
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FFT results for the flow pulse of pumps with 15 teeth on the driving gear 13 to 16 teeth on the driven gear
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FFT results for the flow pulse of pumps with 16 teeth on the driving gear 13 to 16 teeth on the driven gear
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The geometry of the involute tooth profile

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