scholarly journals Void fraction predictive methods in two-phase flow across a small diameter channel

2019 ◽  
Vol 121 ◽  
pp. 103115 ◽  
Author(s):  
Marcin Pietrzak ◽  
Małgorzata Płaczek
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Small Diameter ◽  
Phase Flow ◽  
Two Phase ◽  
Predictive Methods ◽  
Diameter Channel

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.

Application of Neutron Radiography to Visualization and Void Fraction Measurement of Air-Water Two-Phase Flow in a Small Diameter Tube

1993 ◽  
Vol 30 (6) ◽  
pp. 516-523 ◽  
Author(s):  
Takashi HIBIKI ◽  
Kaicbirol MISHIMA ◽  
Kenji YONEDA ◽  
Shigenori FUJINE ◽  
Keiji KANDA ◽  
...  
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Neutron Radiography ◽  
Small Diameter ◽  
Phase Flow ◽  
Two Phase ◽  
Fraction Measurement

scholarly journals Void Fraction Characteristics of Gas-Liquid Two-Phase Flow in a Small Diameter Tube

2008 ◽  
Vol 74 (741) ◽  
pp. 1107-1113
Author(s):  
Tadanobu UEDA ◽  
Nobuyuki TAKENAKA ◽  
Hitoshi ASANO ◽  
Katsumi SUGIMOTO ◽  
Yuji KAWABATA ◽  
...  
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Small Diameter ◽  
Phase Flow ◽  
Two Phase

FLOW PATTERN AND VOID FRACTION IN AN ADVANCED TWO-PHASE FLOW THERMOSYPHON LOOP

Equipment ◽  
2006 ◽  
Author(s):  
R. Khodabandeh ◽  
D. Haglind ◽  
B. Palm
Keyword(s):  
Flow Pattern ◽  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

EXPERIMENTAL STUDY ON VOID FRACTION OF ECCS TWO-PHASE FLOW

2017 ◽  
Author(s):  
Guojun Yu ◽  
Wuyue Ren ◽  
Jiawei Bian ◽  
G. H. Su ◽  
Wenxi Tian ◽  
...  
Keyword(s):  
Experimental Study ◽  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

A model to predict void-fraction in two-phase flow

1969 ◽  
Vol 24 (9) ◽  
pp. 1483-1489 ◽  
Author(s):  
Ronald W. Brown ◽  
Albert Gomezplata ◽  
Joseph D. Price
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase
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