Experimental Examination of Gas-liquid Two-phase Flow Patterns in an Inclined Rectangular Channel with ۹۰° Bend for Various Vertical Lengths
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-35-4_020
تاریخ نمایه سازی: 10 اردیبهشت 1401
Abstract:
In order to realize the behavior of two-phase flow in an inclined rectangular channel with ۹۰̊ bend for various vertical lengths, an experimental investigation has performed. The test section (a chanel with ۳۰ m length) contains two horizontal parts and a middle vertical section. Three vertical lengths of ۵۰, ۱۰۰ and ۱۵۰ cm were utilized along the test section. The cross section of the rectangular channel is ۱۰ cm × ۱۵ cm. Air and water were the fluids used in this work. Various flow patterns are created by varying the volumetric flow-rates of gas and liquid; the air and water flow rates were in the range of ۲ to ۱۰ and ۳۴ to ۲۳۵ , respectively. The high speed video system was utilized to achieve image subsequence of the flow under various conditions. The effects of vertical length on flow regimes and pattern transition borders are examined. According to the flow visualization, no vortex was observed in the vertical section. The significant flow regime in the vertical section is churn flow regime. It is concluded that the flow pattern structures are not greatly affected by changing the vertical length.
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Authors
M. Vatani
Department of Mechanical Engineering, Babol University of Technology, Babol, Iran
D. Domiri-Ganji
Department of Mechanical Engineering, Babol University of Technology, Babol, Iran
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