Swirling Gas–Liquid Two-Phase Flow—Experiment and Modeling Part I: Swirling Flow Field

2004 ◽  
Vol 126 (6) ◽  
pp. 935-942 ◽  
Author(s):  
L. Gomez ◽  
R. Mohan ◽  
O. Shoham
Keyword(s):  
Flow Field ◽  
Two Phase Flow ◽  
Swirling Flow ◽  
Phase Flow ◽  
Centrifugal Forces ◽  
Two Phase ◽  
Cylindrical Cyclone ◽  
Flow Experiment ◽  
Core Characteristics ◽  
Good Agreement

Compact cyclonic separators are based on swirling flow, whereby the phases are separated due to the centrifugal forces generated by the flow. This phenomenon is common in several compact separators used by the oil, process, and aerospace industries. The objective of this paper is to study experimentally the hydrodynamics of the continuous liquid phase under swirling two-phase flow, such as that occurring in the lower part of the Gas–Liquid Cylindrical Cyclone (GLCC©1) compact separator and develop a model to characterize it. Local LDV measurements for a swirling flow field have been analyzed and utilized to develop cyclone and pipe swirling flow field prediction correlations. The developed correlations, including the axial, tangential, and radial velocity distributions, have been tested and validated against data from other studies, showing good agreement. The velocity field correlations can be used to analyze swirling two-phase flow in cyclonic separators and pipes. In part II of this two-part paper, correlations are developed for the turbulent quantities, and core characteristics and stability for swirling two-phase flow.

Flow Field, Turbulent Quantities and Core Stability in Gas-Liquid Two-Phase Swirling Flow: Experiment and Modeling

2003 ◽  
Author(s):  
Luis E. Gomez ◽  
Ram Mohan ◽  
Ovadia Shoham
Keyword(s):  
Flow Field ◽  
Swirling Flow ◽  
Core Stability ◽  
Phase Flow ◽  
Flow Data ◽  
Centrifugal Forces ◽  
Two Phase ◽  
Cylindrical Cyclone ◽  
Flow Experiment ◽  
Local Measurements

Compact cyclonic separators are based on swirling flow field, whereby the phases are separated due to the centrifugal forces generated by the flow. This phenomenon is common in several compact separators used by the oil, process and aerospace industries. The objective of this paper is to study experimentally and to develop a model for the hydrodynamics of dispersed two-phase swirling flow, such as present in the lower part of the Gas-Liquid Cylindrical Cyclone (GLCC) or in the Liquid-Liquid Cylindrical Cyclone (LLCC) compact separators. Large amounts of cyclone local measurements of swirling flow data were acquired using an LDV. These data and other published in the literature were used to develop correlations for the swirling flow field and the associated turbulent quantities, based on the swirling intensity concept. The developed correlations can be used to analyze swirling two-phase flow in pipes and cyclonic separators. Finally, an analysis of the gas core stability in the swirling flow field is presented.

Swirling Gas–Liquid Two-Phase Flow—Experiment and Modeling Part II: Turbulent Quantities and Core Stability

2004 ◽  
Vol 126 (6) ◽  
pp. 943-959 ◽  
Author(s):  
L. Gomez ◽  
R. Mohan ◽  
O. Shoham
Keyword(s):  
Liquid Phase ◽  
Kinetic Energy ◽  
Turbulent Kinetic Energy ◽  
Two Phase Flow ◽  
Swirling Flow ◽  
Core Stability ◽  
Shear Stresses ◽  
Phase Flow ◽  
Two Phase ◽  
Good Agreement

In Part I of this two-part paper on swirling gas–liquid two-phase flow, correlations have been developed for the continuous liquid-phase velocity field under swirling conditions, such as that occurring in the lower part of the Gas–Liquid Cylindrical Cyclone (GLCC©1) compact separator. The developed correlations, including the axial, tangential, and radial velocity distributions, are applicable for swirling flow in both cyclones and pipe flow. The first objective of this paper is to extend the study of Part I by developing correlations for the turbulent quantities of the continuous liquid phase, including the turbulent kinetic energy and its dissipation rate and Reynolds shear stresses. The second objective is to study experimentally and theoretically two-phase swirling flow gas-core characteristics and stability. The first objective has been met utilizing local LDV measurements acquired for swirling flow. The developed turbulent quantities correlations have been tested against data from other studies, showing good agreement. For the second objective, experimental data have been acquired under swirling two-phase flow conditions. A model for the prediction of the gas-core diameter and stability in swirling flow field has been developed, based on the turbulent kinetic energy behavior predicted by the developed correlations. Good agreement is observed between the model predictions and the data.

Status of Advanced Two-Phase Flow Model Development for SRM Chamber Flow Field and Combustion Modeling

2004 ◽  
Author(s):  
Gary Luke ◽  
Mark Eagar ◽  
Michael Sears ◽  
Scott Felt ◽  
Bob Prozan
Keyword(s):  
Flow Field ◽  
Flow Model ◽  
Two Phase Flow ◽  
Model Development ◽  
Phase Flow ◽  
Two Phase ◽  
Combustion Modeling

Upward Vertical Two-Phase Flow Through an Annulus—Part II: Modeling Bubble, Slug, and Annular Flow

1992 ◽  
Vol 114 (1) ◽  
pp. 14-30 ◽  
Author(s):  
E. F. Caetano ◽  
O. Shoham ◽  
J. P. Brill
Keyword(s):  
Flow Pattern ◽  
Annular Flow ◽  
Two Phase Flow ◽  
Flow Behavior ◽  
Bubble Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Through ◽  
Physical Phenomena ◽  
Good Agreement

Mechanistic models have been developed for each of the existing two-phase flow patterns in an annulus, namely bubble flow, dispersed bubble flow, slug flow, and annular flow. These models are based on two-phase flow physical phenomena and incorporate annulus characteristics such as casing and tubing diameters and degree of eccentricity. The models also apply the new predictive means for friction factor and Taylor bubble rise velocity presented in Part I. Given a set of flow conditions, the existing flow pattern in the system can be predicted. The developed models are applied next for predicting the flow behavior, including the average volumetric liquid holdup and the average total pressure gradient for the existing flow pattern. In general, good agreement was observed between the experimental data and model predictions.

Two-Phase Flow Field Numerical Simulation in Scrubber for Exhaust Gas Desulfurization

2014 ◽  
Vol 541-542 ◽  
pp. 1288-1291
Author(s):  
Zhi Feng Dong ◽  
Quan Jin Kuang ◽  
Yong Zheng Gu ◽  
Rong Yao ◽  
Hong Wei Wang
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Flue Gas ◽  
Two Phase Flow ◽  
Three Dimensional ◽  
Flue Gas Desulfurization ◽  
Parameter Design ◽  
Phase Flow ◽  
Two Phase ◽  
Entrance Angle

Calculation fluid dynamics software Fluent was used to conduct three-dimensional numerical simulation on gas-liquid two-phase flow field in a wet flue gas desulfurization scrubber. The k-ε model and SIMPLE computing were adopted in the analysis. The numerical simulation results show that the different gas entrance angles lead to internal changes of gas-liquid two-phase flow field, which provides references for reasonable parameter design of entrance angle in the scrubber.

Research Analysis and Experiment Study on Flow Field of Hydrodynamic Coupling

2011 ◽  
Vol 418-420 ◽  
pp. 2006-2011
Author(s):  
Rui Zhang ◽  
Cheng Jian Sun ◽  
Yue Wang
Keyword(s):  
Flow Field ◽  
Cfd Simulation ◽  
Two Phase Flow ◽  
Three Dimensional ◽  
Internal Flow ◽  
Phase Flow ◽  
Complex Flow ◽  
Two Phase ◽  
Operation Conditions ◽  
Hydrodynamic Coupling

CFD simulation and PIV test technology provide effective solution for revealing the complex flow of hydrodynamic coupling’s internal flow field. Some articles reported that the combination of CFD simulation and PIV test can be used for analyzing the internal flow field of coupling, and such analysis focuses on one-phase flow. However, most internal flow field of coupling are gas-fluid two-phase flow under the real operation conditions. In order to reflect the gas-fluid two-phase flow of coupling objectively, CFD three-dimensional numerical simulation is conducted under two typical operation conditions. In addition, modern two-dimensional PIV technology is used to test the two-phase flow. This method of combining experiments and simulation presents the characteristics of the flow field when charging ratios are different.

Application results of a prototype ultrasonic liquid film sensor to a 7 MPa steam–water two-phase flow experiment

2015 ◽  
Vol 53 (4) ◽  
pp. 537-545 ◽  
Author(s):  
Goro Aoyama ◽  
Kiyoshi Fujimoto ◽  
Kenichi Katono ◽  
Takuji Nagayoshi ◽  
Atsushi Baba ◽  
...  
Keyword(s):  
Liquid Film ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Film Sensor ◽  
Flow Experiment
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