Drag Reduction by Dimples on Surfaces in Plane-plane Contact Lubrication
凹坑表面形貌在面接触润滑状态下的减阻研究

An experimental system was designed to evaluate the drag reduction by dimples on surfaces in plane-plane contact lubrication.Because of the dimples on the surfaces,in some of the experiments,it was observed that gas bubbles existed stably in the lubricant film.The results of the experiments show that the existence of gas was decided by the depth of dimples and the supply volume of lubricant;the deeper the dimples were and the less lubricant there was,the higher the probability of gas existence was.The reaso...