Pressure recovery characteristics for a dilute gas–particle suspension flowing vertically downward in a pipe with a sudden expansion: A two-fluid modeling approach

Particuology ◽  
2020 ◽  
Vol 50 ◽  
pp. 100-111 ◽  
Author(s):  
Santosh Kumar Senapati ◽  
Sukanta Kumar Dash
Keyword(s):  
Pressure Recovery ◽  
Sudden Expansion ◽  
Particle Suspension ◽  
Fluid Modeling ◽  
Modeling Approach ◽  
Dilute Gas ◽  
Two Fluid

Karakteristik aliran dua fase pada saluran ekspansi tiba-tiba

2018 ◽  
Vol 11 (1) ◽  
pp. 7
Author(s):  
Latif Ngudi Wibawanto ◽  
Budi Santoso ◽  
Wibawa Endra Juwana
Keyword(s):  
Standard Deviation ◽  
Flow Pattern ◽  
Flow Characteristic ◽  
Homogeneous Model ◽  
Flow Equation ◽  
Pressure Recovery ◽  
Sudden Expansion ◽  
Air Velocity ◽  
Model Flow ◽  
Two Phases

This research was conducted to find out the flow characteristic of two phases through the channel with sudden expansion in the form of change of flow pattern and pressure recovery. The test was carried out with variation of superficial velocity of water 0.2-1.3 m / s and superficial air velocity of 0.2-1.9 m / s resulting in pattern of three flow patterns ie bubble, plug, and slug. The expansion channel resulted in some changes to the flow pattern that originally plugs in the upstream channel into bubble in the downstream channel and the slug becomes plug. Pressure recovery experimental results compared with the homogeneous model flow equation and Wadle correlation, both correlations have predictions with standard deviation values of 0.32 and 0.43.

Development of five-moment two-fluid modeling for Z-pinch physics

2021 ◽  
Vol 28 (9) ◽  
pp. 092512
Author(s):  
E. T. Meier ◽  
U. Shumlak
Keyword(s):  
Fluid Modeling ◽  
Z Pinch ◽  
Two Fluid

scholarly journals Two-fluid modeling of bubbly flows around surface ships using a phenomenological subgrid air entrainment model

2011 ◽  
Vol 52 ◽  
pp. 50-57 ◽  
Author(s):  
Jingsen Ma ◽  
Assad A. Oberai ◽  
Mark C. Hyman ◽  
Donald A. Drew ◽  
Richard T. Lahey
Keyword(s):  
Air Entrainment ◽  
Bubbly Flows ◽  
Fluid Modeling ◽  
Two Fluid

Characteristics of Air-Oil Two-Phase Flow Across a Sudden Expansion

2003 ◽  
Author(s):  
W. H. Ahmed ◽  
C. Y. Ching ◽  
M. Shoukri
Keyword(s):  
Void Fraction ◽  
Two Phase Flow ◽  
Pressure Recovery ◽  
Sudden Expansion ◽  
Phase Flow ◽  
Sudden Increase ◽  
Two Phase ◽  
Recovery Coefficient ◽  
Dynamic Head ◽  
Experimental Pressure

The pressure recovery and void fraction change of air-oil two-phase flow across a sudden expansion has been investigated experimentally over a range of flow conditions. The pressure upstream and downstream of a half-inch to one-inch sudden expansion was measured using a series of pressure taps, and capacitance sensors were used to measure the void fraction along the test section. The void fraction increases as the flow approaches the sudden expansion section, with a sudden increase immediately downstream of the expansion followed by a gradual relaxation to the fully developed value further downstream. The normalized pressure recovery coefficient using the dynamic head based on the homogeneous density and two-phase velocity is found to collapse when plotted as a function of the mass quality. The experimental pressure recovery data are compared with predictions from existing models, and are found to be in good agreement with the Delhaye model with the void fraction relation of Wallis.

Two-fluid modeling of a wet spouted fluidized bed with wet restitution coefficient model

2020 ◽  
Vol 364 ◽  
pp. 363-372 ◽  
Author(s):  
Hanbin Zhong ◽  
Yaning Zhang ◽  
Qingang Xiong ◽  
Juntao Zhang ◽  
Yuqin Zhu ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Restitution Coefficient ◽  
Fluid Modeling ◽  
Two Fluid
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