scholarly journals Isothermal Air-Water Two-Phase Up-and Downward flows in a Vertical Capillary Tube 1st Report, Flow Pattern and Void Fraction.

1992 ◽  
Vol 58 (553) ◽  
pp. 2684-2690 ◽  
Author(s):  
Akira KARIYASAKI ◽  
Tohru FUKANO ◽  
Akiharu OUSAKA ◽  
Masazumi KAGAWA
Keyword(s):  
Flow Pattern ◽  
Void Fraction ◽  
Capillary Tube ◽  
Two Phase

scholarly journals Flow Pattern and Pressure Drop Characteristics on Gas/Liquid Two-phase Flow in a Serpentine Capillary Tube

2007 ◽  
Vol 2 ◽  
pp. 25-32 ◽  
Author(s):  
Toru SUKAWA ◽  
Tomoya HASEGAWA ◽  
Kenji YOSHIDA ◽  
Isao KATAOKA
Keyword(s):  
Pressure Drop ◽  
Flow Pattern ◽  
Two Phase Flow ◽  
Capillary Tube ◽  
Phase Flow ◽  
Two Phase

Flow Pattern, Void Fraction and Pressure Drop During Adiabatic Two-Phase Gas-Liquid Flow in Vertical Micro-Channel

2012 ◽  
Author(s):  
Sira Saisorn ◽  
Somchai Wongwises
Keyword(s):  
Pressure Drop ◽  
Flow Pattern ◽  
Void Fraction ◽  
Test Section ◽  
Annular Flow ◽  
Fused Silica ◽  
Working Fluid ◽  
Micro Channel ◽  
Two Phase ◽  
Churn Flow

The experimental investigation is performed to study two-phase flow pattern, void fraction and pressure drop characteristics in a vertical micro-channel. The test section is a fused silica tube with a diameter of 0.53 mm and a length of 320 mm. Air and water are used as working fluid which is introduced to the test section in vertical upward direction. The test runs are done at superficial velocities of gas and liquid ranging respectively from 0.375 to 21.187 m/s and 0.004 to 2.436 m/s. Stereozoom microscope mounted together with camera are employed to conduct flow visualization from which slug flow, throat-annular flow, churn flow, annular flow and annular-rivulet flow are observed. Based on image analysis, void fraction data are obtained and found to be linear relationship with volumetric quality. The frictional pressure drop is relatively high when the formation of churn flow is established. Besides, the two-phase frictional multiplier is found to be strongly dependent on both mass flux and flow pattern.

scholarly journals Two-phase flow pattern classification based on void fraction time series and machine learning

2021 ◽  
pp. 102084
Author(s):  
Jefferson dos Santos Ambrosio ◽  
André Eugenio Lazzaretti ◽  
Daniel Rodrigues Pipa ◽  
Marco Jose da Silva
Keyword(s):  
Machine Learning ◽  
Time Series ◽  
Flow Pattern ◽  
Void Fraction ◽  
Pattern Classification ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase
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