In an open channel, a hydraulic jump is a sudden transition from a high-velocity to slower, fluvial flow motion. The impinging flow forms a turbulent roller with a highly fluctuating free-surface, while a large amount of air bubbles is entrapped at the jump toe. The present work presents some physical investigations of hydraulic jumps based upon a wide range of inflow Froude numbers (3.8 < Fr1 ...

This study presents a new flexible dynamic model for drive systems comprising lubricated bearings operating under conditions representative of electrified vehicle powertrains. The multi-physics approach importantly accounts the tribological phenomena at roller–race conjunction and models their effect on shaft-bearing system dynamics. is achieved by embedding non-linear bearing within level mode...

A three-dimensional vehicle-axle box bearing coupling model is established. The can calculate the contact force in three directions and obtain dynamic response of axle under real vehicle running environment. load distribution on double row tapered roller analyzed, co-simulation conducted by comprehensively considering transmission between bearing. Taking into account great impact defects bearin...

Rolling-element bearings are one of the most important elements when predicting noise rotating machinery. As a major connecting point between and non-rotating parts, their dynamic properties have to be accurately known. In this investigation we present bottom-up approach characterising dynamics rolling-element bearing. A special test device was designed built assess quality well-established ana...

In this study, the tapered roller bearing was adopted to explore effect of manganese phosphate coating on friction, wear, and lifespan bearings. Line friction samples with without a were prepared. The White Light Interferometry used analyze three-dimensional morphology roughness, Optimal Schwing–Reib–Verschleiss-5 multifunctional wear tester applied obtain tribological parameters before after a...