Experimental Measurement and Numerical Validation of the Flow Ripple in Internal Gear Pumps

Alessandro Ferrari, Paola Fresia, Massimo Rundo (), Oscar Vento and Pietro Pizzo
Additional contact information
Alessandro Ferrari: Department of Energy, Politecnico di Torino, 10129 Turin, Italy
Paola Fresia: Department of Energy, Politecnico di Torino, 10129 Turin, Italy
Massimo Rundo: Department of Energy, Politecnico di Torino, 10129 Turin, Italy
Oscar Vento: Department of Energy, Politecnico di Torino, 10129 Turin, Italy
Pietro Pizzo: Rabotti Srl, 10148 Turin, Italy

Energies, 2022, vol. 15, issue 24, 1-15

Abstract: The flow ripple in an internal gear pump was measured by means of a new instantaneous high-pressure flowmeter. The flowmeter consists of two pressure sensors mounted on a piece of the straight steel pump delivery line, and a variable-diameter orifice was installed along such a line, downstream of the flowmeter, to generate a variable load. Three distinct configurations of the high-pressure flowmeter, characterized by a different distance between the pressure transducers, were analyzed. Furthermore, a comprehensive fluid dynamic 3D model of the pump and of its high-pressure delivery line was developed and validated in terms of both the delivery pressure and the flow ripple for different pump working conditions. For the three examined configurations of the flowmeter, the measured flowrate time histories matched the corresponding numerical distributions at the various operating points. Finally, the validated 3D model was applied to predict the incomplete filling working of the interteeth chambers, and the obtained numerical pressure time histories along the delivery line were used, as input data, to assess the reliability of the flowmeter algorithm even in these severe operating conditions.

Keywords: flow ripple; internal gear pump; instantaneous flow measurement (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/24/9607/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/24/9607/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:24:p:9607-:d:1007076

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().