Visualization study on the flow pattern of gas-solid-liquid three-phase flow in upriser airlift pump

2020 ◽  
Author(s):  
Nurmala Dyah Fajarningrum ◽  
Deendarlianto ◽  
Indarto ◽  
IGNB Catrawedarma
Keyword(s):  
Flow Pattern ◽  
Phase Flow ◽  
Three Phase ◽  
Three Phase Flow ◽  
Airlift Pump ◽  
Solid Liquid

Flow pattern identification and measurement techniques in gas-liquid-liquid three-phase flow: A review

2020 ◽  
Vol 76 ◽  
pp. 101834
Author(s):  
Muhammad Waqas Yaqub ◽  
Ramasamy Marappagounder ◽  
Risza Rusli ◽  
D.M. Reddy Prasad ◽  
Rajashekhar Pendyala
Keyword(s):  
Flow Pattern ◽  
Measurement Techniques ◽  
Pattern Identification ◽  
Phase Flow ◽  
Three Phase ◽  
Three Phase Flow ◽  
Flow Pattern Identification

Characteristics of the Interfacial Wave Velocity on the Liquid Film of Annular Flow for Gas-Oil-Water Three-Phase Flow in a Horizontal Pipe

2011 ◽  
Vol 402 ◽  
pp. 816-819
Author(s):  
Hai Qin Wang ◽  
Yong Wang ◽  
Lei Zhang ◽  
Jin Hai Gong ◽  
Zhen Yu Wang
Keyword(s):  
Flow Pattern ◽  
Wave Velocity ◽  
Annular Flow ◽  
Superficial Velocity ◽  
Phase Flow ◽  
Gas Oil ◽  
Interfacial Wave ◽  
Three Phase ◽  
Three Phase Flow ◽  
Oil Water

The experiments were conducted in a horizontal multiphase flow test loop (50mm inner diameter, 40m long) and the cross-correlation technology was used for the study of the characteristics of the interfacial wave velocity about two types of annular flow regimes (AN║DO/W and AN║DW/O) for gas-oil-water three-phase flow. The results show that the interfacial wave velocity on the liquid film of AN║DO/W flow pattern and AN║DW/O flow pattern all increases with the increase of gas superficial velocity and liquid superficial velocity on the condition of fixed ratio of oil and water flow rates, but the difference is that the increase is a linear monotonic increase for AN║DO/W flow pattern and a non-linear increase for AN║DW/O flow pattern, and the liquid superficial velocity makes a larger contribution than the gas superficial velocity. The interfacial wave velocity also increases with the increase of input water cut in liquid at different gas superficial velocities under the conditions of liquid superficial velocity fixed.

Measuring Flow Velocity and Flow Pattern of a Suspension-Gas Mixture Inside a Twin-Fluid Atomizer

2006 ◽  
Author(s):  
Florian Schmidt ◽  
Dieter Mewes ◽  
Marc Lo¨rcher
Keyword(s):  
Flow Velocity ◽  
Flow Pattern ◽  
Cross Section ◽  
Flow Rate ◽  
Particle Concentration ◽  
Volume Flow ◽  
Phase Flow ◽  
Three Phase ◽  
Three Phase Flow ◽  
Gas Volume

Twin-fluid atomizers are widely used for spray-drying application. The suspension to be dried can be atomized very efficiently if the atomizer is operated at critical conditions. The three-phase flow containing solids, gas and liquid is accelerated inside the atomizer due to a pressure gradient. If the upstream pressure is sufficiently high, a maximum possible mass flow rate is achieved. This operating condition is called “critical”. The velocity of the three-phase flow and the flow pattern in the exit cross section has a major impact on the jet break-up and thus on the spray characteristics. In this experimental work the flow velocity and flow pattern inside the nozzle of the atomizer is measured. A laser-sensor is used to determine the flow velocity via cross-correlation at different operating conditions and positions inside the nozzle. The same sensor is used to measure the flow pattern by analyzing the time dependent laser light absorption of of the flow. The influence of various compositions of the suspension concerning gas volume flow rate and particle concentration on the measured velocities and flow patterns are derived. Higher gas volume flow rates increase the velocities and higher particle concentration have a decreasing influence. For a pure gas-liquid flow the obtained results are in good agreement with a theoretical model. In the exit cross-section plug flow and annular flow is observed depending on the gas volume flow fraction. The particles in the suspension have no significant influence on the flow pattern.

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