scholarly journals Evaluation of flow pattern recognition and void fraction measurement in two phase flow independent of oil pipeline’s scale layer thickness

2021 ◽  
Vol 60 (1) ◽  
pp. 1955-1966
Author(s):  
Mohammadmehdi Roshani ◽  
Giang T.T. Phan ◽  
Peshawa Jammal Muhammad Ali ◽  
Gholam Hossein Roshani ◽  
Robert Hanus ◽  
...  
Keyword(s):  
Pattern Recognition ◽  
Flow Pattern ◽  
Layer Thickness ◽  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Scale Layer ◽  
Fraction Measurement

Void fraction measurement of the air-water two-phase flow in the sub-channel of a rod bundle geometry based on an impedance meter

2018 ◽  
Vol 115 ◽  
pp. 480-486 ◽  
Author(s):  
Bin Yu ◽  
Wenxiong Zhou ◽  
Liangming Pan ◽  
Hang Liu ◽  
Quanyao Ren ◽  
...  
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Rod Bundle ◽  
Fraction Measurement ◽  
Impedance Meter

scholarly journals Overview of Void Fraction Measurement Techniques, Databases and Correlations for Two-Phase Flow in Small Diameter Channels

Fluids ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 216
Author(s):  
Álvaro Roberto Gardenghi ◽  
Erivelto dos Santos Filho ◽  
Daniel Gregório Chagas ◽  
Guilherme Scagnolatto ◽  
Rodrigo Monteiro Oliveira ◽  
...  
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Measurement Techniques ◽  
Small Diameter ◽  
Phase Flow ◽  
Two Phase ◽  
Channel Diameter ◽  
Experimental Database ◽  
Absolute Relative Error ◽  
Fraction Measurement

Void fraction is one of the most important parameters for the modeling and characterization of two-phase flows. This manuscript presents an overview of void fraction measurement techniques, experimental databases and correlations, in the context of microchannel two-phase flow applications. Void fraction measurement techniques were reviewed and the most suitable techniques for microscale measurements were identified along its main characteristics. An updated void fraction experimental database for small channel diameter was obtained including micro and macrochannel two-phase flow data points. These data have channel diameter ranging from 0.5 to 13.84 mm, horizontal and vertical directions, and fluids such as air-water, R410a, R404a, R134a, R290, R12 and R22 for both diabatic and adiabatic conditions. New published void fraction correlations as well high cited ones were evaluated and compared to this small-diameter void fraction database in order to quantify the prediction error of them. Moreover, a new drift flux correlation for microchannels was also developed, showing that further improvement of available correlations is still possible. The new correlation was able to predict the microchannel database with mean absolute relative error of 9.8%, for 6% of relative improvement compared to the second-best ranked correlation for small diameter channels.

Void fraction measurement in modeled two-phase flow inside a vertical pipe by using polyethylene phantoms

2015 ◽  
Vol 40 (44) ◽  
pp. 15206-15212 ◽  
Author(s):  
Reza Faghihi ◽  
Mohammadreza Nematollahi ◽  
Ali Erfaninia ◽  
Mahtab Adineh
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Vertical Pipe ◽  
Two Phase ◽  
Fraction Measurement

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
Sign in / Sign up

Export Citation Format

Share Document