Effect of fluid-structure interaction on sealed flow field and leakage rate based on computational fluid dynamics

Tang, H.N.; Wang, Shijie; Zhao, Jiyun

doi:10.1007/s12204-015-1631-x

Cited by 4 publications

(1 citation statement)

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“…The oil-air mixture needs to satisfy the basic equations of fluid motion during the flow process, namely, the continuity equation, momentum conservation equation, and energy conservation equation. Its general form is [15] as follows:…”

Section: Methodsmentioning

confidence: 99%

Influence of Structural Parameters of Gearbox Seal System of Electrical Multiple Units on Seal Performance

Shen,

Zhu,

Shao

et al. 2024

Mathematical Problems in Engineering

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The gearbox seal system is a critical component of the electrical multiple units drive system, with a direct impact on the safety and reliability of train operations. This study intends to analyze how structural parameters of the gearbox seal system influence the seal performance from the viewpoint of “oil–air separation and scavenge oil” by using a discrete phase model and volume of fluid. The results show that the oil–air separation performance is mainly affected by the oil droplets’ inertia force and the airflow traction force, and the scavenge oil performance is decided by the oil–air separation performance of each seal chamber. The relationships between seal chamber size, axial seal clearance width, height difference, scavenge oil hole diameter, and seal performance are analyzed, and the study also found that optimizing the stator chamber depth–width ratio of the seal system studied in this paper at 2.5, reducing the rotor chamber depth–width ratio and axial seal clearance width, and increasing the relative height difference can improve the seal performance. And increasing the scavenge oil hole diameter also enhances the seal system’s performance. The simulation results can be used as design references for gearbox seal systems.

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Section: Methodsmentioning

confidence: 99%