Flow characteristic of horizontal-vertical upward air-water with 45° elbow

International Conference on Mechanical Engineering Research and Application

Widodo, Agung^1 ; Awaluddin^1

Mechanical Engineering Department, Faculty of Engineering, Universitas Brawijaya, Indonesia^1

关键词: Air speed;    Air-water;    Experimental investigations;    Flow charac-teristics;    Flow of air;    Gas volume fraction;    Inner diameters;    Two-phase fluid flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/494/1/012031/pdf
DOI  :  10.1088/1757-899X/494/1/012031

来源: IOP

【 摘 要 】

An experimental investigation of flow characteristics of horinsontal-vertical upward with 45° elbow has been conducted in a 3/4 " inner diameter pipe. The aims of this research are to determine the pattern of two-phase fluid flow (water-air) and pressure drop occurred in the flow. Data were obtained by varying flowrate of 1 - 3 lpm and volumetric proportion of gas (ß) of 25-50%. The results showed that a slug/plug flow was occurred at the 45° with various charateristics. The slug/plug flow indicated more bigger as the gas volume fraction (β) bigger and those are inversely to the supervisial air Reynolds (VSL). The size and the shape of the slug/plug flow were inversely with the pressure drop due to the mixing of two flow of air - water. The higher pressure drop theorically and experimentally occurred at 216.6 Pa and 107.4 Pa respectively on gas volume fraction (β) of 25%, superfisial air speed (vsG) of 0.076 m/s and superfisial water speed (vsL) of 0.227 m/s.