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This study compares the influence of three texturing geometries—spherical, cylindrical, and square on the performance of hydrodynamic journal bearings —while considering the mass-conserving boundary conditions and the effects of lubricant inertia. A modified Reynolds equation was developed to incorporate both fluid inertia and cavitation effects. The Jakobsson–Floberg–Olsson (JFO) boundary conditions, which address cavitation, were implemented using Elrod’s algorithm. Considering protrusion texturing, the modified Reynolds equation was solved using the Gauss–Seidel iterative approach. The findings indicate that as inertia increases, square texturing reduces friction variables and enhances load-carrying capacity. However, the influence of lubricant inertia on the flow coefficient is minimal.

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Influence of Texture Geometry on the Performance of Textured Journal Bearing Considering Fluid Inertia Effect and Cavitation

  • 会议论文

  • 发表日期：

    2025年

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  • Debajit Das,
  • Sashindra Kumar Kakoty

摘要

This study compares the influence of three texturing geometries—spherical, cylindrical, and square on the performance of hydrodynamic journal bearings —while considering the mass-conserving boundary conditions and the effects of lubricant inertia. A modified Reynolds equation was developed to incorporate both fluid inertia and cavitation effects. The Jakobsson–Floberg–Olsson (JFO) boundary conditions, which address cavitation, were implemented using Elrod’s algorithm. Considering protrusion texturing, the modified Reynolds equation was solved using the Gauss–Seidel iterative approach. The findings indicate that as inertia increases, square texturing reduces friction variables and enhances load-carrying capacity. However, the influence of lubricant inertia on the flow coefficient is minimal.