Effects of operating conditions on cavitation induction of spiral groove liquid-film seal (SG-LFS)

Li, Zhentao; Yin, Xiaoli; Yue, Jixiang; Liu, Fuyu; Hao, Minghui; Ren, Biao

doi:10.1108/ilt-03-2020-0083

Cited by 3 publications

(1 citation statement)

References 21 publications

(19 reference statements)

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“…Suzuki et al (2018) and Itadani et al (2020) found that cavitation plays a positive role in improving the pumping capacity and reducing leakage. Li et al (2020) investigated the cavitation of spiral groove liquid film seals based on the theory and experiment, focusing on the effects of operational and groove structure parameters. Letalleur et al (2002) used a flow factor model which provides an average description of the surface’s roughness impact and studied the effect of lubricant film flow between the two parallel sinusoidal wavy surfaces.…”

Section: Introductionmentioning

confidence: 99%

Effects of surface topography on cavitation evolution of liquid film lubricated mechanical seals

Li¹,

Zhou²,

Yin³

et al. 2022

ILT

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Purpose The purpose of this paper is to investigate the effects of surface topography, including surface roughness, waviness and taper, on the cavitation of liquid film lubricated mechanical seals (LFL-MS). Design/methodology/approach A universal governing equation considering cavitation is established, and an equivalent relative density is defined to characterize the cavitation degree. The equation is discretized by the finite volume method and solved by the Gauss–Seidel relaxation scheme. Findings Results indicate that both radial length and a circumferential width of the cavitation zone and cavitation degree are affected significantly by the waviness amplitude and taper, but the effect of surface roughness is limited. Originality/value Effect mechanism of surface topography on the cavitation of LFL-MS is investigated and cavitation degree is reflected by an equivalent relative density. The results further help to comprehensively explore the cavitation mechanism.

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Section: Introductionmentioning

confidence: 99%

Effects of surface topography on cavitation evolution of liquid film lubricated mechanical seals

Li¹,

Zhou²,

Yin³

et al. 2022

ILT

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Experimental research on sealing performance of liquid film seal with herringbone-grooved composite textures

Liu

Li²,

Bo³

et al. 2023

Tribology International

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Fluid Cavitation Intensity in Zero Leakage Upstream Pumping Face Seals with Spiral Grooves

Song,

Bai,

Yang

et al. 2023

Int. J. Appl. Mechanics

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Cavitation intensity variations in fluid lubrication may alter the mechanical and lubrication properties of the fluid. In this paper, a compressible cavitation model is presented to study the effect of fluid cavitation intensity on zero-leakage flow of upstream-pumping spiral grooves face seals (UPSGLFS). The pressure variation in cavities can be calculated considering the compressibility of the lubricating medium, the ratio of minimum pressure to cavitation pressure is further defined to characterize the cavitation intensity. A numerical analysis of the zero-leakage behavior of UPSGLFS is then performed based on its effect. Results show that cavitation plays a negative role in sealing performances. However, the groove’s configuration and working conditions have substantial effects on controlling the cavitation intensity. Meanwhile, whether a circumferential continuous pressure ring above the seal pressure can be formed is the design basis for judging the strict zero leakage of the medium, rather than only depending on the change of leakage rate parameter value. With suitable spiral groove parameter design, zero-leakage design for upstream-pumping seals may be achieved under multi-speed and multi-seal-pressure conditions. Here, a zero-leakage map is presented for working conditions with multi-speed ranging from 500 to 20,000[Formula: see text]rpm and multi-seal pressure ranging from 0.1 to 3.0[Formula: see text]MPa.

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Effects of operating conditions on cavitation induction of spiral groove liquid-film seal (SG-LFS)

Cited by 3 publications

References 21 publications

Effects of surface topography on cavitation evolution of liquid film lubricated mechanical seals

Effects of surface topography on cavitation evolution of liquid film lubricated mechanical seals

Experimental research on sealing performance of liquid film seal with herringbone-grooved composite textures

Fluid Cavitation Intensity in Zero Leakage Upstream Pumping Face Seals with Spiral Grooves

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