Study on the Dynamic Modeling of Two-Phase Flow and Lubrication Characteristics of Toothless Stirring Oil Pans DOI Open Access

Yiming Huang,

Man Ge,

Gaoan Zheng

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 829 - 829

Published: March 12, 2025

The toothless oil stirring disk is vital in modern transmission technology, particularly fields like aviation, aerospace, and nuclear power, significantly impacting equipment performance. Oil-stirring lubrication widely used internal systems due to its simplicity high reliability, but oil-stirring losses during contribute increased system temperatures, affecting lifespan Accurate simulation of the two-phase flow process high-speed disks crucial for extending service life. This paper proposes a dynamic modeling approach disks, integrating volume fluid (VOF) model RNG k-ε turbulence model, alongside spring smoothing mesh reconstruction techniques. explores distribution high-speed, pans, investigating effects different pan speeds heights on Results indicate that speed height are key improving efficiency. At speeds, centrifugal force gravity cause lubricating detach from surface, continuing splash inertia. 3200 r/min an level 20 mm, stable film forms gearbox. Higher generate greater turbulence, enhancing effectiveness. findings offer theoretical insights support gearbox design optimization aerospace similar fields.

Language: Английский

A coupled LBM-LES-DEM particle flow modeling for microfluidic chip and ultrasonic-based particle aggregation control method DOI
Lin Li, Pu Xu, Qihan Li

et al.

Applied Mathematical Modelling, Journal Year: 2025, Volume and Issue: unknown, P. 116025 - 116025

Published: Feb. 1, 2025

Language: Английский

Citations

12
Interlayer healing mechanism of multipath deposition 3D printing models and interlayer strength regulation method DOI
Pu Xu, Qihan Li, Chengyan Wang

et al.

Journal of Manufacturing Processes, Journal Year: 2025, Volume and Issue: 141, P. 1031 - 1047

Published: March 14, 2025

Language: Английский

Citations

3
Investigate on the Fluid Dynamics and Heat Transfer Behavior in an Automobile Gearbox Based on the LBM-LES Model DOI Creative Commons

Gaoan Zheng,

Pu Xu, Lin Li

et al.

Lubricants, Journal Year: 2025, Volume and Issue: 13(3), P. 117 - 117

Published: March 10, 2025

With the rapid development of new energy vehicle market, demand for efficient, low-noise, low-energy consumption, high-strength, and durable gear transmission systems is continuously increasing. Therefore, it has become imperative to conduct in-depth research into fluid heat transfer lubrication dynamics within gearboxes. In systems, interaction between fluids solids leads complex nonlinear characteristics gears lubricants, making resolution gearbox thermodynamic models highly challenging. This paper proposes a model based on LBM-LES coupling study dynamic laws process. The results indicate that intense shear effects caused by high speeds generate vortices, which are particularly pronounced larger gears. mixing effect in these vortex regions better, achieving more uniform dissipation effect. Furthermore, flow lubricant closely related speed temperature. Under high-temperature conditions (such as 100 °C), diffusion range increases, forming wider oil film, but its viscosity significantly decreases, leading greater stirring losses. By optimizing selection lubricants parameters, efficiency reliability system can be further improved, extending service life. provides comprehensive analytical framework multi-stage clarifying mechanisms offering insights theoretical foundations future engineering applications this field.

Language: Английский

Citations

2
Investigation of Flow Characteristics in Rotating Distributary and Confluence Cavities DOI Creative Commons
Kuan Zheng,

Huan Ma,

Hongchuang Sun

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(5), P. 1287 - 1287

Published: March 6, 2025

Power generation is an important part of air vehicle energy management when developing long-endurance and reusable hypersonic aircraft. In order to utilize turbine power system on board, fuel-based rotating cooling has been researched cool the turbine’s rotor blades. For fuel-cooling turbines, each blade corresponds a separate channel. All channels cross together form distributary cavity confluence in center disk. determine flow characteristics cavities, computational fluid dynamics (CFD) simulations using shear–stress–transport turbulence model were carried out under conditions different speeds mass rates. The results showed great differences between non-rotating cavities. cavities rotational velocity, with obvious layering distribution regularity. Moreover, high-speed surface formed original structure, due combined functions centrifugal force, inertia, Coriolis force. Great pressure loss occurs passes through surface. This increases increase speed rate. Finally, four structures compared, optimal structure separated outlet channel was identified as best eliminate this loss.

Language: Английский

Citations

0
Study on the Dynamic Modeling of Two-Phase Flow and Lubrication Characteristics of Toothless Stirring Oil Pans DOI Open Access

Yiming Huang,

Man Ge,

Gaoan Zheng

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(3), P. 829 - 829

Published: March 12, 2025

The toothless oil stirring disk is vital in modern transmission technology, particularly fields like aviation, aerospace, and nuclear power, significantly impacting equipment performance. Oil-stirring lubrication widely used internal systems due to its simplicity high reliability, but oil-stirring losses during contribute increased system temperatures, affecting lifespan Accurate simulation of the two-phase flow process high-speed disks crucial for extending service life. This paper proposes a dynamic modeling approach disks, integrating volume fluid (VOF) model RNG k-ε turbulence model, alongside spring smoothing mesh reconstruction techniques. explores distribution high-speed, pans, investigating effects different pan speeds heights on Results indicate that speed height are key improving efficiency. At speeds, centrifugal force gravity cause lubricating detach from surface, continuing splash inertia. 3200 r/min an level 20 mm, stable film forms gearbox. Higher generate greater turbulence, enhancing effectiveness. findings offer theoretical insights support gearbox design optimization aerospace similar fields.

Language: Английский

Citations

0