Study of Effect of Air Content in Lubrication Oil on Gerotor Pump Performance Using CFD Simulations

Singh, Ravi Kant; Salutagi, Shivayogi S; Pieta, Piotr; Madhavan, Jaiganesh

doi:10.4271/2019-26-0300

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…These studies were a step forward to a better prediction of aeration and cavitation conditions in gerotor pumps. In this current year of 2019, Singh et al [125] implemented the effect of the dissolved and entrained air in PumpLinx ® environment with a modified version of the cavitation model published in the literature. The authors claimed an error of less than 5% in agreement with the experimental data.…”

Section: Integrated Methodsmentioning

confidence: 99%

A Review of Gerotor Technology in Hydraulic Machines

2019

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Over the years, numerous investigations have established the gerotor fundamentals. This work aims to provide a complete review of the literature from the last decade, focusing on the articles published in the past five years on gerotor technology in hydraulic machines. The report gives a catalogue of guidelines based on the trochoidal-envelope definition, a background analysis, the worldwide distribution of articles in each continent and country and the most frequently used keywords in the field. The paper identifies state-of-the-art research, and reports on current mainstream ideas. From the historical background, this literature review reports the current approaches in gerotor pumps (geometry and performance approaches, modeling and numerical simulations), orbital motors and new concepts. The report will serve as a guide and a directory for novel engineers working with gerotor technology in hydraulic machines. Another intention of this paper is to disseminate the works of the researchers who use this technology around the world, and to provide a scenario for future international collaboration. The paper gives an account of the disparity between academia and engineering applications. There is currently very little published literature on design and production methodologies for gerotor pumps and orbital motors. Hence, the future goal is to collect recommendations that combine academia and industry expertise to make better use of these extensive studies in the field.

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Section: Integrated Methodsmentioning

confidence: 99%

A Review of Gerotor Technology in Hydraulic Machines

2019

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“…Modeling of the working fluid flow [49] based on the solution of the RANS equations with the SST turbulence model [50] was carried out, cavitation phenomena [51] and fluid aeration [52] were studied using computer simulation, and guidelines for setting up models were developed using a reduced number of computational simulations hydrodynamics [53]. The effect of air dissolved and entrained in the working fluid on the performance of a gerotor pump was studied by simulating cavitation using the PumpLinx ® CFD software [54]. A numerical model has been developed that can be applied to orbital-type HM, which makes it possible to quantitatively measure wear [55].…”

Section: Introductionmentioning

confidence: 99%

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

Hutsol

2023

Energies

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Research is devoted to the use of energy-efficient hydraulic motors in running modules for mechatronic systems of construction, road, municipal, agricultural, railway and other self-propelled machines; robots are used in various branches of the European economy and can contribute to the practical implementation of the philosophy of the “European Green Deal”. As a result of this research, design schemes and a mathematical apparatus have been developed that allow determining the rational force in the contact zone of the movable and fixed distributors. In order to determine the geometric parameters of the stepped surfaces of the movable and fixed distributors, which ensure the formation of an oil film in the contact zone, a structural-functional diagram of the mathematical model has been developed, which makes it possible to obtain a quantitative estimate of the increase in the productivity of the distribution system. The conducted studies have established that with rational design of the distribution system elements by reducing the clamping force by 3...5% in the distribution system, leakage through the end gap is reduced by 26%. Reduction of leakage in the contact zone allows an increase in productivity of the distribution system of 2.4% by increasing the volumetric efficiency (reducing losses).

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“…Recently, three-dimensional (3D) dynamic mesh method has been started to be explored to describe the motion of the gears, where the immersed solid method, the dynamic mesh method based on the commercial software package Pumplinx and the 2.5D dynamic mesh model are three potential options for flow analyses of gear pumps. For instance, Ham et al (Ham, Kim, Oh, & Cho, 2018) and Singh et al (Singh, Salutagi, Pieta, & Madhavan, 2019) conducted three-dimensional simulations of the flow performance, cavitation characteristics and pressure pulsation in gerotor pumps based on the dynamic mesh method in Pumplinx. Castilla and Gamez-Montero et al (Castilla, Gamez-Montero, Raush, & Codina, 2017;Gamez-Montero, et al, 2012) and Yoon et al (2017) investigated the flow performances of gerotor pumps and external gear pumps working at a low pressure by the 2.5D dynamic mesh model and the immersed solid method, respectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental studies on flow performances and hydraulic radial forces of an internal gear pump with a high pressure

Liu

et al. 2019

Engineering Applications of Computational Fluid Mechanics

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Unbalanced radial force is one of the most urgent issues for internal gear pumps (IGPs) working at high working pressures. A numerical model for the prediction of the unbalanced radial force is essential for the structural design of gear pumps, facing the challenges of gear engagement description, dynamic mesh method, and so on. In this work, a three-dimensional computational fluid dynamics model of an IGP with a high working pressure was established based on the 2.5-dimensional dynamic mesh method, with cavitation and gear engagements included. The flow behavior and the hydraulic radial force of the high-pressure IGP were studied, and experiments for pump performances were conducted for comparisons. Results indicated that the numerical model could provide a reasonable solution of the flow rate and pressure pulsation for the high-pressure IGP, verified by the experimental data. The circumferential pressure distribution of the pump does not increase linearly, but presents a stepped increase. The hydraulic radial force fluctuates with gear rotation, and its value increases with the working pressure.

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Study of Effect of Air Content in Lubrication Oil on Gerotor Pump Performance Using CFD Simulations

Cited by 3 publications

References 3 publications

A Review of Gerotor Technology in Hydraulic Machines

A Review of Gerotor Technology in Hydraulic Machines

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

Numerical and experimental studies on flow performances and hydraulic radial forces of an internal gear pump with a high pressure

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