Effect of Groove Textures on the Performances of Gaseous Bubble in the Lubricant of Journal Bearing

Author:

Meng F. M.1,Zhang L.2,Long T.3

Affiliation:

1. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China; Aerospace System Engineering Shanghai, Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201109, China e-mail:

2. College of Mechanical Engineering, Chongqing University, Chongqing 400044, China e-mail:

3. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China e-mail:

Abstract

Effects of groove textures on the performances for gaseous bubbles in the lubricant used for a textured journal bearing is studied under the consideration of thermal effect of lubricant. The Reynolds, energy, and Rayleigh–Plesset (RP) equations are solved simultaneously for simulating the behavior of the bubble. Numerical results show that the gaseous bubble radius shows a nonlinearly oscillation in a full cycle period, and high bubble pressure and temperature appear when the bubble collapses. Moreover, appropriately choosing groove length, width, or interval can reduce the maximum radius, collapse pressure, and collapse temperature of the bubble. There exists a critical groove depth minimizing the bubble pressure and temperature.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

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