The Characteristics of the Annular Flow through the Sudden-Expansion Pipe of the Oil-Air Lubrication System

Abstract:

The characteristics of the sudden-expansion pipe in oil-air lubrication system have been analyzed based on Fluent. The results show that the pressure and oil film mutate when the annular flow through the sudden-expansion pipe and the suddenly change of position of pressure and film is not affected by the inlet air velocity, however, the strength of pressure and film is in direct ratio with the inlet air velocity. The film of oil-air annular flow in the pipeline before the suddenly expanding part is well-distributed, but the distribution after that is widely affected by the air velocity and the pipe diameter, and furthermore the larger air velocity and pipe diameter increase the degree of dispersion of the annular flow film.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 358-362
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.358
• Online since: February 2014
• Authors: Qi Guo Sun, Xiong Shi Wang*, Ying Wang, Zhi Hong Li
• Keywords: Annular Flow, Fluent, Oil-Air Lubrication, Sudden-Expansion Pipe

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