UNSTEADY CHARACTERISTICS OF TWO PHASE FLOW IN A HORIZONTAL TUBE EVAPORATOR

1974 ◽  
Author(s):  
Takamoto Saito ◽  
Hideo Uchida ◽  
Eiichi Hiraoka
Keyword(s):  
Two Phase Flow ◽  
Horizontal Tube ◽  
Phase Flow ◽  
Two Phase ◽  
Unsteady Characteristics

scholarly journals DYNAMICS OF TWO-PHASE FLOW ACROSS HORIZONTAL TUBE BUNDLES - A REVIEW

2005 ◽  
Vol 4 (2) ◽  
Author(s):  
G. Ribatskia ◽  
J. R. Thome
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Experimental Studies ◽  
Horizontal Tube ◽  
Prediction Methods ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Drops ◽  
Frictional Pressure Drop ◽  
Tube Bundles

This paper presents a state-of-the-art review of the hydrodynamic aspects of two-phase flow across horizontal tube bundles. The review covers studies related to the evaluation of void fraction, two-phase flow behaviors and pressure drops on the shell side of staggered and in-line tube bundles for upward, downward and side-to-side flows. This study of the literature critically describes the proposed flow pattern maps and semi-empirical correlations for predicting void fraction and frictional pressure drop. These predicting methods are generally based on experimental results for adiabatic air-water flows. A limited number of experimental studies with R-11 and R-113 were also carried out in the past. The review shows noticeable discrepancies among the available prediction methods. Finally, this study suggests that further research focusing on the development of representative databanks and new prediction methods is still necessary.

INVESTIGATION ON VOID FRACTION FOR TWO-PHASE FLOW PRESSURE DROP OF EVAPORATIVE R-290 IN HORIZONTAL TUBE

2016 ◽  
Vol 78 (8-4) ◽  
Author(s):  
Agus Sunjarianto Pamitran ◽  
Sentot Novianto ◽  
Normah Mohd-Ghazali ◽  
Nasruddin Nasruddin ◽  
Raldi Koestoer
Keyword(s):  
Pressure Drop ◽  
Void Fraction ◽  
Two Phase Flow ◽  
Flow Boiling ◽  
Homogeneous Model ◽  
Saturation Temperature ◽  
Horizontal Tube ◽  
Phase Flow ◽  
Two Phase ◽  
Experimental Conditions

Two-phase flow boiling pressure drop experiment was conducted to observe its characteristics and to develop a new correlation of void fraction based on the separated model. Investigation is completed on the natural refrigerant R-290 (propane) in a horizontal circular tube with a 7.6 mm inner diameter under experimental conditions of 3.7 to 9.6 °C saturation temperature, 10 to 25 kW/m2 heat flux, and 185 to 445 kg/m2s mass flux. The present experimental data was used to obtain the calculated void fraction which then was compared to the predicted void fraction with 31 existing correlations. A new void fraction correlation for predicting two-phase flow boiling pressure drop, as a function of Reynolds numbers, was proposed. The measured pressure drop was compared to the predicted pressure drop with some existing pressure drop models that use the newly developed void fraction model. The homogeneous model of void fraction showed the best prediction with 2% deviation

E222 Void Fraction Behavior of Boiling Two-Phase Flow in Horizontal Tube : Numerical Simulation

2009 ◽  
Vol 2009 (0) ◽  
pp. 271-272
Author(s):  
Takeyuki Ami ◽  
Hisashi Umekawa ◽  
Mamoru Ozawa ◽  
Masahiro Shoji
Keyword(s):  
Numerical Simulation ◽  
Void Fraction ◽  
Two Phase Flow ◽  
Horizontal Tube ◽  
Phase Flow ◽  
Two Phase

Stratified two-phase flow pattern modulation in a horizontal tube by the mesh pore cylinder surface

2013 ◽  
Vol 112 ◽  
pp. 1283-1290 ◽  
Author(s):  
Hongxia Chen ◽  
Jinliang Xu ◽  
Zijin Li ◽  
Feng Xing ◽  
Jian Xie
Keyword(s):  
Flow Pattern ◽  
Two Phase Flow ◽  
Horizontal Tube ◽  
Cylinder Surface ◽  
Phase Flow ◽  
Two Phase ◽  
Pattern Modulation
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