Abstract
Abstract: Thickness of oil film, a parameter of an oil-air lubrication system, is an important evaluation criterion for two-phase annular flow flowed in the system. Experiment of the effects of oil volume-per-cycle on oil film’s thickness is done on a special test rig using ECT technology, and then the changing rule of oil film’s thickness is analyzed in this paper. The results show that, at the first the thickness of oil film is thinness and weakness, and then it changes to thickness and stabilization, at the last the oil focusing on the bottom of tube. The break of annular flow and the blocking of oil at elbow tube have been studied experimentally and theoretically.
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