Effect of Oil Viscosity on Hydraulic Cavitation Luminescence

Jian Zhang; Naiming Qi; Jihai Jiang

doi:10.1134/S0015462821030125

Effect of Oil Viscosity on Hydraulic Cavitation Luminescence

Jian Zhang^*
, Naiming Qi
, Jihai Jiang

^*Corresponding author for this work

Harbin Institute of Technology
School of Astronautics, Harbin Institute of Technology
School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Abstract—: The collapse of cavitation bubbles in a hydraulic system generates localized zones of high temperature and pressure and, under certain conditions, luminescence. In this study, we studied the influence of the hydraulic oil viscosity on cavitation luminescence. We used a hydraulic cone-type throttle valve with antiwear hydraulic oils with kinematic viscosities of 32, 46, and 46 mm²/s at 40°C. Computational fluid dynamics was used to simulate the flow field of the cone-throttle valve under different viscosities. After constructing the visual experimental platform of hydraulic cavitation, we observed cavitation luminescence of the valve under three different hydraulic oil conditions. After the experiment, the viscosity index of the oil increased, the pour point decreased, and the flash point decreased. Thus, the viscosity–temperature characteristics and low-temperature fluidity improved and the safety decreased after luminescence.

Original language	English
Pages (from-to)	371-382
Number of pages	12
Journal	Fluid Dynamics
Volume	56
Issue number	3
DOIs	https://doi.org/10.1134/S0015462821030125
State	Published - May 2021
Externally published	Yes

Keywords

cavitation luminescence
computational fluid dynamics
hydraulic oil
viscosity

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10.1134/S0015462821030125

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@article{b660cb954aca431cabb12d8615a74bda,

title = "Effect of Oil Viscosity on Hydraulic Cavitation Luminescence",

abstract = "Abstract{\textemdash}: The collapse of cavitation bubbles in a hydraulic system generates localized zones of high temperature and pressure and, under certain conditions, luminescence. In this study, we studied the influence of the hydraulic oil viscosity on cavitation luminescence. We used a hydraulic cone-type throttle valve with antiwear hydraulic oils with kinematic viscosities of 32, 46, and 46 mm2/s at 40°C. Computational fluid dynamics was used to simulate the flow field of the cone-throttle valve under different viscosities. After constructing the visual experimental platform of hydraulic cavitation, we observed cavitation luminescence of the valve under three different hydraulic oil conditions. After the experiment, the viscosity index of the oil increased, the pour point decreased, and the flash point decreased. Thus, the viscosity{\textendash}temperature characteristics and low-temperature fluidity improved and the safety decreased after luminescence.",

keywords = "cavitation luminescence, computational fluid dynamics, hydraulic oil, viscosity",

author = "Jian Zhang and Naiming Qi and Jihai Jiang",

note = "Publisher Copyright: {\textcopyright} 2021, Pleiades Publishing, Ltd.",

year = "2021",

month = may,

doi = "10.1134/S0015462821030125",

language = "英语",

volume = "56",

pages = "371--382",

journal = "Fluid Dynamics",

issn = "0015-4628",

publisher = "Pleiades Publishing",

number = "3",

}

TY - JOUR

T1 - Effect of Oil Viscosity on Hydraulic Cavitation Luminescence

AU - Zhang, Jian

AU - Qi, Naiming

AU - Jiang, Jihai

PY - 2021/5

Y1 - 2021/5

N2 - Abstract—: The collapse of cavitation bubbles in a hydraulic system generates localized zones of high temperature and pressure and, under certain conditions, luminescence. In this study, we studied the influence of the hydraulic oil viscosity on cavitation luminescence. We used a hydraulic cone-type throttle valve with antiwear hydraulic oils with kinematic viscosities of 32, 46, and 46 mm2/s at 40°C. Computational fluid dynamics was used to simulate the flow field of the cone-throttle valve under different viscosities. After constructing the visual experimental platform of hydraulic cavitation, we observed cavitation luminescence of the valve under three different hydraulic oil conditions. After the experiment, the viscosity index of the oil increased, the pour point decreased, and the flash point decreased. Thus, the viscosity–temperature characteristics and low-temperature fluidity improved and the safety decreased after luminescence.

AB - Abstract—: The collapse of cavitation bubbles in a hydraulic system generates localized zones of high temperature and pressure and, under certain conditions, luminescence. In this study, we studied the influence of the hydraulic oil viscosity on cavitation luminescence. We used a hydraulic cone-type throttle valve with antiwear hydraulic oils with kinematic viscosities of 32, 46, and 46 mm2/s at 40°C. Computational fluid dynamics was used to simulate the flow field of the cone-throttle valve under different viscosities. After constructing the visual experimental platform of hydraulic cavitation, we observed cavitation luminescence of the valve under three different hydraulic oil conditions. After the experiment, the viscosity index of the oil increased, the pour point decreased, and the flash point decreased. Thus, the viscosity–temperature characteristics and low-temperature fluidity improved and the safety decreased after luminescence.

KW - cavitation luminescence

KW - computational fluid dynamics

KW - hydraulic oil

KW - viscosity

UR - https://www.scopus.com/pages/publications/85107580524

U2 - 10.1134/S0015462821030125

DO - 10.1134/S0015462821030125

M3 - 文章

AN - SCOPUS:85107580524

SN - 0015-4628

VL - 56

SP - 371

EP - 382

JO - Fluid Dynamics

JF - Fluid Dynamics

IS - 3

ER -

Effect of Oil Viscosity on Hydraulic Cavitation Luminescence

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