Numerical simulation of splash lubrication performance and optimization of cavity structure parameters for high-speed railway gearbox
The average pressure in gear meshing and the average volume fraction of lubricating oil in the plane of oil collecting box at output end of high-speed railway gearbox are taken as evaluation indexes, a CFD numerical simulation model is built for splashing lubrication of helical gears in high-speed railway gearbox.Based on the Box-Behnken response surface test, the quadratic regression model of radial distance, axial distance and guide bar width on the average volume fraction of lubricant and the average pressure at gear meshing are obtained.The design parameters are optimized.Our results show a radial distance of 22.92 mm, an axial distance of 50 mm and a guide bar width of 14.02 mm are the optimum parameters.The average volume fraction of oil in oil gathering box is 0.547, and the average pressure at gear engagement is 32.452 kPa.
gearboxflow field distributionimmersed entity methodresponse surface
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