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http://dx.doi.org/10.5916/jkosme.2013.37.6.631

The effect of eccentricity between gear and housing in involute gear pump  

Kim, Sung-Hoon (Department of Mechanical and Automotive Engineering, Keimyung University)
Son, Hye-Min (Design Department, Daejoo machinery Co. LTD.)
Lee, Jae-Cheon (Department of Mechanical and Automotive Engineering, Keimyung University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.37, no.6, 2013 , pp. 631-637 More about this Journal
Abstract
The characteristics of involute gear pump with eccentric gap between gear tip and housing have been studied in terms of volumetric flow rate and/or flow efficiency. The analysis has been done with FLUENT/R-13 employing with k-e model for the turbulent flow under the given conditions of rotational velocity, gap distance and outlet pressure. The effect of parameters continues to be shown for the eccentric gear as same as for the concentric gear such that the volumetric flow rate (volumetric efficiency) increases as the increases of rotational velocity and decrease of gap distance and of outlet pressure. In the meantime, the shape of pressure build-up appears to be exponentially increase as gap distance decreases at upstream position. The pressure is rapidly developing in the upstream and remains almost constant thereafter in the downstream of circumferential flow path. This typical characteristics becomes more profound as eccentricity increases. The pump performance for the eccentric gear pump with minimum gap distance shows better than its concentric counterpart. However, it shows not for the concentric pump with minimum gap distance. Therefore, the gap reduction due to eccentricity may be positive for pump performance.
Keywords
Involute gear pump; Dynamic mesh; k-e model; Flow rate; Eccentric gear;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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