An Investigation into the Optimal Dimple Geometry in a Single-Dimple Sliding Contact.

Scharf, Raphael; Pusterhofer, Michael; Gussmagg, Jakob; Grün, Florian

This study analyzes the influence of nine distinct texture geometries on a convergent oil film gap using a simulation model. The geometrical dimensions of the textures are characterized by the texture area density, S t e x. , A and the ratio of the textured-to-untextured area ( A t e x. / A 0) . The results show that different texture geometries optimize the tribological performance depending on the value of S t e x. , A . Rectangular textures with variable widths (85% of the texture length a t e x. ) significantly enhance lifting and the drag force across a broad range of S t e x. , A . Furthermore, rectangular textures with a constant width (85% of the global width b 0 ) show the best improvement within this study. The investigation also reveals that a small texture pitch angle, α t e x , further enhances tribological performance.

DRAG force; LIFT (Aerodynamics); SIMULATION methods & models; GEOMETRY; PETROLEUM

Machines, 2024, Vol 12, Issue 9, p622

2075-1702

Academic Journal

10.3390/machines12090622