CFD Analysis on the Heat Dissipation of a Dry-Lubricated Gear Stage

Power losses in gearboxes result frictional heating. Sufficient heat transfer from the gearbox to environment is required for reliable operation. The dissipation gears linked their interaction with fluids gearbox. Recent research has demonstrated use of Computational Fluid Dynamics (CFD) predict fluid flow and no-load an isothermal manner. This study focuses on a numerical analysis within dry-lubricated under atmospheric conditions. Spur helical are investigated. air as well over gear surfaces evaluated detail. results show that geometry circumferential speed have strong impact flow. Especially, axial inflow great influence dissipation. Conveying effects lead multidirectional airflow, resulting higher values coefficient surface compared spur gears.