Research of working pulsation in closed angle based on rotating-sleeve distributing-flow system

Zhang, Yanjun; Zhao, Qinghai; Jiang, Xiaotian; Cheng, Qu

doi:10.1063/1.4993012

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…However, this research of the RSDF system mainly focuses on the kinematics and the flow field characteristics, and rare consideration is given to cavitation, which is a factor that seriously affects the performance of the RSDF system. Although the research [42] found the cavitation of the system, it did not establish a cavitation model that is suitable for the RSDF system. Moreover, this research is still at the theoretical stage and has not been confirmed by experiments.…”

Section: Literature Reviewmentioning

confidence: 98%

“…This research provides foundations for investigating flow field characteristics and structure optimization of the RSDF system. To reduce pressure pulsation, Zhang et al [42] optimized the angle between valve port and chamber of the RSDF system; meanwhile, the research was the first time to discover the cavitation in the RSDF system. However, this research of the RSDF system mainly focuses on the kinematics and the flow field characteristics, and rare consideration is given to cavitation, which is a factor that seriously affects the performance of the RSDF system.…”

Section: Literature Reviewmentioning

confidence: 99%

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Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

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Reciprocating piston pumps are widely used in various fields, such as automobiles, ships, aviation, and engineering machinery. Conventional reciprocating piston pump distributing flow (RPPDF) systems have the disadvantages of a loose structure and low volumetric efficiency, as well as affected positively by the operating frequency. In this paper, a novel rotating-sleeve distributing flow (RSDF) system is presented for bridging these drawbacks, as well as structurally improved to overcome the inoperable and challenging problems in oil intake and discharge found in the experiment. Moreover, the Singhal cavitation model specifically for the RSDF system and four-cam groove profiles (CGPs) is established. To find the most suitable CGP to reduce the RSDF’s cavitation, the cavitation of the RSDF system was investigated, combining with simulations by taking into account the gap among the rotating sleeve, the pump chamber, and experiments on four presented CGPs. Simulation results based on vapor volume fraction, cavitation ratio, and volumetric efficiency show that the linear profile’s cavitation is the weakest. Finally, the correctness of the simulation is verified through orthogonal experiments. This research is of great significance to the further development of the RSDF system; more important, it has great potential to promote the reform of the RPPDF method.

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Section: Literature Reviewmentioning

confidence: 98%

Section: Literature Reviewmentioning

confidence: 99%

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

Self Cite

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“…However, the influence of RFDS on cavitation has not been investigated. The cavitation model of the system was initially introduced by Zhang et al (2017aZhang et al ( , 2017b, who analyzed the influence of cavitation on the water system.…”

Section: Introductionmentioning

confidence: 99%

Study on Cavitation Characteristics of Rotating-Sleeve Flow Distribution System

2021

JAFM

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As Rotating-sleeve Flow Distribution System (RFDS) running, the cavitation of the hydraulic pump may lead to the decreased volume efficiency, increment of vibration and noise, then affecting the operation of system.To deeply analyze the cavitation characteristics of RFDS, the Singhal cavitation model of RFDS was established, meanwhile corresponding experiments were carried out. Cavitation characteristics of RFDS were investigated under various revolving speed, inlet pressure and CAM groove profile. The results demonstrate that the variation trend of experimental volumetric efficiency is the same as that of simulation results. The maximum error is 2% and 3.2% at different rotating speeds and different inlet pressures respectively. Maximum gas volume fraction and cavitation time ratio increase monotonically as the rotating speed increases, and volumetric efficiency increases first and then decreases with the increase of rotating speed. Volumetric efficiency reaches up to 92.13% under the rotating speed of 500r/min. The increased inlet pressure can slow down the cavitation of RFDS and improve volumetric efficiency. Linear profile exhibits the best cavitation characteristic under both different rotating speed and inlet pressure.

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Research of working pulsation in closed angle based on rotating-sleeve distributing-flow system

Cited by 2 publications

References 6 publications

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Study on Cavitation Characteristics of Rotating-Sleeve Flow Distribution System

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