A Numerical Analysis of an Innovative Flow Ripple Reduction Method for External Gear Pumps

Gianluca Marinaro, Emma Frosina and Adolfo Senatore
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Gianluca Marinaro: Department of Industrial Engineering, University of Naples Federico II, Via Claudio, 21, 80125 Naples, Italy
Emma Frosina: Department of Engineering, University of Sannio, Piazza Guerrazzi, 82100 Benevento, Italy
Adolfo Senatore: Department of Industrial Engineering, University of Naples Federico II, Via Claudio, 21, 80125 Naples, Italy

Energies, 2021, vol. 14, issue 2, 1-22

Abstract: In this paper, an innovative solution to minimize noise emission, acting on the flow ripple, in a prototype External Gear Pump (EGP) is presented. Firstly, a new tool capable to completely simulate this pump’s typologies, called EgeMATor, is presented; the hydraulic model, adopted for the simulation, is based on a lumped parameter method using a control volume approach. Starting from the pump drawing, thanks to different subroutines developed in different environments interconnected, it is possible to analyze an EGP. Results have been compared with the outputs of a three-dimensional CFD numerical model built up using a commercial code, already used with success by the authors. In the second section, an innovative solution to reduce the flow ripple is implemented. This technology is called Alternative Capacitive Volumes (ACV) and works by controlling and uniformizing the reverse flow, performing a consistent reduction of flow non-uniformity amplitude. In particular, a high reduction of the flow non-uniformity is notable in the frequency domain on the second fundamental frequency. The technology is easy to accommodate in a pump housing, especially for high-pressure components, and it helps with reducing the fluid-borne noise.

Keywords: external gear pumps; EGPs; fluid-borne noise; flow non-uniformity; lumped parameter numerical simulation; CFD; flow ripple (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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