A Semi-Analytical Model of Spiral-Groove Face Seals: Correction and Extension

Xiao, Kaiming; Huang, Weifeng; Gao, Wenbin; Liu, Xiangfeng; Wang, Yuming

doi:10.1080/10402004.2015.1126876

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…According to the Ref. [4], the theoretical pressure distribution of the manuscript is compared with the results available the literature for the SG-DGS. The relevant parameter is listed following: inner diameter is 58.42 mm, the root diameter is 69 mm, outside diameter is 77.78 mm, spiral angle is 15°, the gas film thickness is 2 μm, the groove number is 12.…”

Section: Comparison Of the Pressure Distributionmentioning

confidence: 99%

“…The average pressure distributions from a semi analytical model (SAM) of the Ref. [4] and the theoretical model of the current study are shown in Fig. 7.…”

Section: Comparison Of the Pressure Distributionmentioning

confidence: 99%

“…In the field of lubrication performance, Miller et al [3] developed a novel semi-analytical formulation to conduct a linearized dynamic analysis of spiral-grooved mechanical gas face seals. In addition, Xiao et al [4] proposed a one-dimensional radial discretization method to study the radial variations of different parameters of face seals and found that the proposed model provided better accuracy. Zhang et al [5] and Ruan [6] researched a representative spiral groove seal and a micro gas journal bearing by a modified Reynolds Equation that considered slip flow effects at slow speed and low-pressure conditions.…”

Section: Introductionmentioning

confidence: 99%

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The influence of spiral angle on lift-off speed of face gas seal under start-up

Ding

Zhang

2019

SN Appl. Sci.

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The lift-off rotating speed of dry gas seal (SG-DGS) is investigated by conducting an experimental test, and using a theoretical model based on the slip-flow effect. The experimental results show that the mixed lubrication regime is transferred to the hydrodynamic lubrication regime at a smaller lift-off rotational speed for a lower spiral angle. On the other hands, the theoretical procedure is implemented to calculate the gas film opening force and the lift-off rotational speed is determined by the minimum contact gas film thickness. The theoretical results show that the smaller spiral angle can offer the greater gas film force and lower lift-off speed. Meanwhile, the experimental data verify the theoretical results well. It can be demonstrated that the spiral angle has a strong effect on the lift-off rotating speed and the theoretical model can calculate the lift-off rotational speed of SG-DGS during start-up process.

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Section: Comparison Of the Pressure Distributionmentioning

confidence: 99%

“…The average pressure distributions from a semi analytical model (SAM) of the Ref. [4] and the theoretical model of the current study are shown in Fig. 7.…”

Section: Comparison Of the Pressure Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of spiral angle on lift-off speed of face gas seal under start-up

Ding

Zhang

2019

SN Appl. Sci.

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“…Many researchers have aimed to reduce friction and wear while controlling leakage in face seals by changing the parameters of the surface textures; however, the results generally showed that the leakage increases as the LCC increases. [21][22][23][24] Sun et al 25 designed a selfpumping mechanical face seal. Their numerical results indicated that the LCC and volume leakage rate (VLR) showed the same variation when the geometric or operational parameters changed.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of surface texture shape in fluid mechanical face seals using mass-conserving cavitation boundary condition

Li,

He,

Luo

2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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Surface texture shape significantly influences the tribological and sealing properties of fluid mechanical face seals. Considering that it is a contradiction to simultaneously improve load capacity and reduce leakage, a numerical multi-objective optimization model is proposed herein to improve the load-carrying capacity while reducing the volume leakage rate via texture shape optimization. The mass-conserving cavitating boundary condition and the non-dominated sorting genetic algorithm II are employed for the optimization. The numerical results indicate that the optimal texture shape is spiral-like under the lowest volume leakage rate, which becomes an asymmetric flat-front chevron with increasing load-carrying capacity and volume leakage rate. The optimal shape outperforms four regular shapes (all obtained by multi-objective optimization) at different rotation speeds and sealing pressures. The cavitation within the optimal shape ensures zero leakage in fluid face seals. The comprehensive performance of the texture shape obtained by multi-objective optimization is superior to that obtained by single-objective optimization.

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A Multi-Objective Optimization Approach on Spiral Grooves for Gas Mechanical Seals

Wang

Shi

Wang

2018

Journal of Tribology

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Spiral groove is one of the most common types of structures on gas mechanical seals. Numerical research demonstrated that the grooves designed for improving gas film lift or film stiffness often lead to the leakage increase. Hence, a multi-objective optimization approach specially for conflicting objectives is utilized to optimize the spiral grooves for a specific sample in this study. First, the objectives and independent variables in multi-objective optimization are determined by single objective analysis. Then, a set of optimal parameters, i.e., Pareto-optimal set, is obtained. Each solution in this set can get the highest dimensionless gas film lift under a specific requirement of the dimensionless leakage rate. Finally, the collinearity diagnostics is performed to evaluate the importance of different independent variables in the optimization.

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A Semi-Analytical Model of Spiral-Groove Face Seals: Correction and Extension

Cited by 3 publications

References 18 publications

The influence of spiral angle on lift-off speed of face gas seal under start-up

The influence of spiral angle on lift-off speed of face gas seal under start-up

Multi-objective optimization of surface texture shape in fluid mechanical face seals using mass-conserving cavitation boundary condition

A Multi-Objective Optimization Approach on Spiral Grooves for Gas Mechanical Seals

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