Evaluation of Interfacial Friction Factor Prediction Methods for Gas/Liquid Stratified Flow

1991 ◽  
Author(s):  
J.J. Xiao ◽  
O. Shoham
Keyword(s):  
Friction Factor ◽  
Stratified Flow ◽  
Interfacial Friction ◽  
Prediction Methods

scholarly journals Effects of Liquid Velocity on Pressure Gradient, Slip and Interfacial Friction Factor in Annular Flow in Horizontal Pipe

2018 ◽  
Vol 3 (8) ◽  
pp. 5
Author(s):  
Uche Osokogwu
Keyword(s):  
Pressure Gradient ◽  
Friction Factor ◽  
Annular Flow ◽  
Liquid Velocity ◽  
Interfacial Friction ◽  
Gas Velocity ◽  
Horizontal Pipe ◽  
Mixture Density ◽  
Superficial Gas Velocity ◽  
Superficial Liquid Velocity

Experimental investigations on annular flow behaviour in two-phase (air/water) flow in horizontal pipe were conducted using 2-inch (0.0504m) with a total length of 28.68m closed loop system. The emphasis from the experiments were on pressure gradient, slip and interfacial friction factor in annular flow. For interfacial friction factor, the entrainment, gas quality, the droplets and slip mixture density values were obtained through the experimental results which were substituted to determine it. In all, effects of liquid velocity were felt, as increase in superficial liquid velocity, increases the interfacial friction factor and pressure gradient in annular flow in horizontal pipes. More so, increase in superficial gas velocity, reduces the interfacial friction factor. Thus, interfacial friction factor decreases with increases in superficial gas velocity, while the pressure gradient increases with increase in superficial liquid velocity. The lower the superficial liquid velocity, the higher the slip but the lower the pressure gradient. Likewise, the lower the superficial liquid velocity, the more ripple waves obtained while the higher the superficial liquid velocity, the more disturbance waves in annular flow in horizontal pipe from the experiments.

scholarly journals COMPARISON ANALYSIS OF CORRELATIONS FOR INTERFACIAL FRICTION FACTOR APPLIED IN GAS-LIQUID ANNULAR FLOW IN VERTICAL PIPES

2017 ◽  
Vol 16 (2) ◽  
pp. 54 ◽  
Author(s):  
C. F. de Paula Jr. ◽  
L. E. M. Lima
Keyword(s):  
Experimental Data ◽  
Friction Factor ◽  
Annular Flow ◽  
Interfacial Shear Stress ◽  
Interfacial Friction ◽  
Gas Flows ◽  
Steam Generation ◽  
Definition Of ◽  
Liquid Flows ◽  
Different Characteristics

Gas-liquid flows in pipes can occur in the form of an annular pattern in which the liquid flows as a thin film at pipe wall and the gas flows as a core in pipe center. This flow pattern is often encountered at boiling and condensation processes, for example, in industries of steam generation, cooling or petroleum. In annular flow, the interfacial friction factor is one of the important closing parameters for the definition of the interfacial shear stress and consequently the pressure gradient. In the literature, several correlations are found to estimate the interfacial friction factor. The main objective of this work is to carry out a comparative analysis of some these correlations against experimental data also obtained from the literature. The features and limitations of each correlation were observed, as well as the accuracy of each in relation to experimental data. The results obtained demonstrate that correlations analyzed, present relatively satisfactory results, despite the different characteristics of the correlations, however, it is necessary to carry out more extensive analyses involving others correlations and sets of experimental data.

scholarly journals On Ripple of Annular Two-Phase Flow : 2. Characteristics of Wave and Interfacial Friction Factor

1978 ◽  
Vol 21 (152) ◽  
pp. 279-286 ◽  
Author(s):  
Kotohiko SEKOGUCHI ◽  
Keiichi HORI ◽  
Masao NAKAZATOMI ◽  
Kaneyasu NISHIKAWA
Keyword(s):  
Friction Factor ◽  
Two Phase Flow ◽  
Interfacial Friction ◽  
Phase Flow ◽  
Two Phase
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