Coanda Effect on the Impact of Distribution Characteristics of Oil-Air Annular Flow

Abstract:

The T-junction model is simulated in Fluent by changing the curvature of branch pipe, and then the distribution characteristics of the annular flow was studied in T-junction distributor. The mass flow and pressure of the annular flow in this T-junction are studied, and the impact of Coanda Effect on the annular flow distribution characteristic is analyzed in oil-air two phases flow. The results show that, Coanda Effect affects the distribution of oil-air annular flow unevenly. The mass flow rate of air phase and the air velocity of outlet increase with decreasing the curvature, while the mass flow rate of liquid decrease with decreasing the curvature of the branch pipe connection; T-shaped junction inlet pressure is high, but the pressure gradient is small, the pressure gradient in the small curvature manifold is larger than that in the large curvature manifold.

• Periodical: Applied Mechanics and Materials (Volume 620)
• Pages: 166-170
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.620.166
• Online since: August 2014
• Authors: Qi Guo Sun, Dong Xu Chen, Xiong Shi Wang, Zheng Hui Zhou*
• Keywords: Annular Flow, Coanda Effect, Phase Distribution, T-Branch Pipe

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DOI: 10.1115/1.2427078