Numerical investigation of drag reduction by heat-enhanced cavitation

Wang, Ying; Sun, Xiaojing; Dai, Yang; Wu, Guoqing; Cao, Yang; Huang, Diangui

doi:10.1016/j.applthermaleng.2014.09.042

Cited by 30 publications

(9 citation statements)

References 15 publications

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“…The damage caused by the bubble collapse to nearby surfaces is a major issue to the run life of hydraulic devices and rotating machinery operating under cavitation conditions. Besides, cavitation is also frequently encountered in several important industrial applications, such as water jet drilling and rock cutting [4] , heating systems [5] , and friction reduction in underwater vehicles [6] , where the dynamics of cavitation bubbles play the essential roles. Assuming the incompressible and inviscid liquid phase, Rayleigh [7] first studied the cavitation phenomenon of bubbles.…”

Section: Introductionmentioning

confidence: 99%

On the thermodynamic behaviors and interactions between bubble pairs: A numerical approach

Yin

Zhang

Zhu

et al. 2021

Ultrasonics Sonochemistry

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Section: Introductionmentioning

confidence: 99%

On the thermodynamic behaviors and interactions between bubble pairs: A numerical approach

Yin

Zhang

Zhu

et al. 2021

Ultrasonics Sonochemistry

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“…Otherwise, a false negative pressure zone yields the CFD results. In contrast to the vapor cavitation model used in paper, 31–33 this work employs the gaseous cavitation model developed by Song et al. 23,24 and Li et al.…”

Section: Methodsmentioning

confidence: 99%

“…Otherwise, a false negative pressure zone yields the CFD results. In contrast to the vapor cavitation model used in paper, [31][32][33] this work employs the gaseous cavitation model developed by Song et al 23,24 and Li et al 25 Their gaseous cavitation model is suitable for oil-film bearing, and more detailed analysis can be found in paper. 24,25 This cavitation model assumes that the cavitation is due to the dissolved non-condensable gases.…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical investigation of subsynchronous vibration in floating ring bearings

Wang

Ren

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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Floating ring bearings are popular among turbochargers due to their simplicity and reliability. The disappearance of subsynchronous vibration with the increase of shaft speed in a low oil-supplied pressure floating ring bearing is reported by Hatakenaka and Yanai. This finding may help eliminate the noise and decrease the loss of turbochargers. This work aims to explain this phenomenon in the low oil-supplied floating ring bearing using computational fluid dynamic. Steady computational fluid dynamic calculation is conducted to validate the effect of air entrainment. Transient computational fluid dynamic calculation method with mesh motion method is established. The subsynchronous vibration of the shaft can be obtained by discrete Fourier transform analysis. The results are validated by comparing them with those in the literature. It is found that the disappearance of the subsynchronous vibration is the result of the change in lubricant properties caused by the air entrainment.

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“…Lower resistance means higher body's velocity and less energy consumption. Recently are proposed a lot of new methods allowing reducing body's resistance: using polymeric additives or coating [1], injection of the air bubbles into the liquid [2,3], vibration of the body [4], hydrophobic coating [5], elastic coating [6], cavitation [7,8] and etc. Usage of those methods usually acts on the physical properties of the body's surface (roughness, elasticity and etc.)…”

Section: Introductionmentioning

confidence: 99%