Last edited by Meztibei
Monday, May 11, 2020 | History

2 edition of investigation of bubble dynamics in vertical two-phase bubbly flow found in the catalog.

investigation of bubble dynamics in vertical two-phase bubbly flow

Darin Lee Redinger

investigation of bubble dynamics in vertical two-phase bubbly flow

by Darin Lee Redinger

  • 300 Want to read
  • 35 Currently reading

Published .
Written in English

    Subjects:
  • Bubbles.,
  • Two-phase flow.

  • Edition Notes

    Statementby Darin Lee Redinger.
    The Physical Object
    Paginationxvi, 106 leaves, bound :
    Number of Pages106
    ID Numbers
    Open LibraryOL16862157M

    void fraction. They determined the liquid velocity, bubble diameter, local void fraction, and bubble frequency. They introduced air through a sintered tube with roughly 70μm pores into a mixing chamber to mix air with de-ionized water to realize a vertical upward two-phase bubbly by: 1. The bubble-driven flow in a bubble column is a typical two-phase system in which the flow is driven by buoyancy. From the viewpoint of physical modeling, two-phase bubbly flow is commonly defined as a flow pattern in which the gas phase is distributed within a liquid continuum in the form of discrete bubbles much smaller than the characteristic.

    BUBBLE DYNAMICS, TWO-PHASE FLOW, AND BOILING HEAT TRANSFER IN MICROGRAVITY Jacob N. Chung School of Mechanical and Materials Engineering Washington State University Pullman, WA ABSTRACT /, The objective of the research is to study the feasibility of employing an external force to replace the buoyancy force. These PBM tools are applied in two bubbly flow cases: bubble columns (using a Eulerian-Eulerian two-phase approach to predict the flow) and a water electrolysis reactor (using a single-phase approach to predict the flow). The numerical results are compared with measured data available in .

    ABSTRACT. Bubble motion in a gas-liquid co-current flow through a porous structure is investigated. Bubble residence time, influence of the structure on the bubble motion, and influence of the buoyancy force acting on the bubble are determined to obtain a better understanding of the existing fluid dynamics in the porous structure. In handling bubble induced turbulent flow, unlike single phase fluid flow problem, no standard turbulence model is tailored for bubbly flow. The standard k − ɛ model based on Launder and Spalding () is considered for the continuous liquid phase with additional buoyancy turbulence source term being accounted within the transport equations. The governing equations for the turbulent Cited by:


Share this book
You might also like
Photographics

Photographics

Proceedings of the special spring meeting held at the Chase-Park Plaza Hotel, St. Louis, Missouri, April 25-26, 1979

Proceedings of the special spring meeting held at the Chase-Park Plaza Hotel, St. Louis, Missouri, April 25-26, 1979

Recent history atlas: 1870 to the present day.

Recent history atlas: 1870 to the present day.

Contact, American art & culture, 1919-1939

Contact, American art & culture, 1919-1939

Need to foster optimal use of resources in the Special Supplemental Food Program for Women, Infants, and Children (WIC)

Need to foster optimal use of resources in the Special Supplemental Food Program for Women, Infants, and Children (WIC)

Building trust in Ireland

Building trust in Ireland

Youth violence and juvenile justice

Youth violence and juvenile justice

Natural resource and environmental information for decision making

Natural resource and environmental information for decision making

Aristotelian theory of comedy

Aristotelian theory of comedy

Bibliography of low energy electron and photon cross section data, (January 1975 through December 1977)

Bibliography of low energy electron and photon cross section data, (January 1975 through December 1977)

Kṣamāśramaṇa Jinabhadra Gaṇiʼs Nihnava-vāda

Kṣamāśramaṇa Jinabhadra Gaṇiʼs Nihnava-vāda

Hoyles games

Hoyles games

landscape of the mind

landscape of the mind

Investigation of bubble dynamics in vertical two-phase bubbly flow by Darin Lee Redinger Download PDF EPUB FB2

Experimental investigation of a developing two-phase bubbly flow in horizontal pipe. It may also be related to the bubble random vertical motion.

The bubble mean vertical velocity has been estimated from videos to be several cm/s. this paper brings new information on developing adiabatic two-phase bubbly flow in a horizontal by: In general, bubble flow is defined as a Two-phase Flow where small bubbles are dispersed or suspended as discrete substances in a liquid continuum.

Typical features of this flow are moving and deformable interfaces of bubbles in time and space domains and complex interactions between the interfaces, and also between the bubbles and the liquid flow.

Hetsroni et al. [63] studied bubble growth and temporal variation of bubble size in flow boiling of water in triangular silicon microchannels with hydraulic diameters of, and μm.

A sequence of images showing bubble growth from their work is presented in Fig. Figure (a) and (b) illustrate the bubble shape at different instants of time during growth and motion. Bubble flow is defined as a Two-Phase Flow where small bubbles are dispersed or suspended as discrete substances in a liquid continuum.

Typical features of this flow are moving and deformable interfaces of bubbles in time and space domains and complex interactions between the interfaces, and also between the bubbles and the liquid flow. @article{osti_, title = {Gas-liquid bubbly flow in vertical pipes}, author = {Nakoryakov, V E and Kashinsky, O N and Randin, V V and Timkin, L S}, abstractNote = {Gas-liquid bubbly flow was investigated in vertical pipes for different flow conditions: fully developed turbulent downward flow in a mm diameter pipe and upward flow in a mm diameter pipe with liquid of elevated.

Analytical Solution of Gas Bubble Dynamics between Two-Phase Flow Article (PDF Available) in Results in Physics July with Reads How we measure 'reads'. Phase Distribution in Bubbly Two-Phase Flow in Vertical Ducts Article (PDF Available) in International Journal of Multiphase Flow 20(5) November with Reads How we measure 'reads'.

The priority research,Analysis, Modelling and Numerical Calculations ofMul­ tiphase Flows" was running for 6 years (from to ) and financially sup­ ported by the Deutsche Forschungsgemeinschaft (DFG). The main objective ofthe research programme was to provide a better understanding of the physical basis for multiphase gas-liquid flows as they are found in numerous.

In the petroleum industry, downward two-phase in annulus is encountered on Liquid Assisted Gas-Lift (LAGL) unloading and production operations.

This study presents experimental data for pressure gradient, liquid holdup, and flow regimes for vertical downward two-phase (air and water) flow in. The two-phase laminar bubbly flow interface is suitable for macroscopic modelling of flow comprising of liquids and gas bubble mixture. The bubbly flow interface solve for average volume fraction occupied by each phase instead of tracking each bubble precisely and.

The motivation of the present work (part-II that is extended to part-I) is the dement to demonstrate, review and summarize the major finding of the previous research of the following points: 1) The techniques and the important models for the measurement of the dominated two-phase bubbly flow/ bubble plume parameters such as gas flow rate bubble.

The experiments were performed in an acrylic square flow channel and high speed imaging was used to capture bubble dynamics. An image processing algorithm was used to quantify the size and frequency of detached bubbles and to track each individual bubble at different gas flow rates and liquid by: 1.

Rinne, Achimand Loth, R.()Development of Local Two-Phase Flow for Vertical Bubbly Flow in a Pipe with Sudden Expansion,Int. Exp. and Therm. Fluid Cited by: 1. Dynamics of the flow in bubble column reactors.- Improved model for the calculation of homogeneous gas-liquid flows.- Experimental and theoretical investigation of bubble break-up and coalescence in bubbly flows.- Experimental investigation and modeling of air/water flows in vertical pipes Conference: Utility of hot-film anemometry technique in horizontal bubbly two-phase flow Title: Utility of hot-film anemometry technique in horizontal bubbly two-phase flow Full Record.

Understanding the complexity of fluid dynamics, mass and heat transfer in the bubble column will provide important information on its application in PCC process. COMSOL Multiphysics® was used to carry out the numerical simulation. The Laminar Two-Phase Flow, Level Set physics interface was used to simulate the fluid dynamics.

Bubbly flows in the horizontal channel or pipe are often seen in industrial engineering fields, so it is very necessary to fully understand hydrodynamics of horizontal bubbly flows so as to improve industrial efficiency and to design an efficient bubbly system. In this paper, in order to fully understand mechanisms of phase distribution and liquid–phase turbulence modulation in the Cited by: 4.

Investigation and modeling of bubble-bubble interaction effect in homogeneous bubbly flowsCited by:   Experimental and theoretical investigation of instationary bubble flow and mass transfer in a bubble column X-ray Based Particle Tracking Velocimetry for Bubble Columns with High Void Fraction Multi-Level Modelling of Dispersed Gas-Liquid Two-Phase Flows Direct numerical simulation of mass transfer between rising gas bubbles and water Analysis.

Chahine, G.L., Gnanaskandan, A., Mansouri, A., and Hsiao, C-T., "Interatction of a cavitation bubble with a polymeric coating-scaling fluid and material dynamics.

Journal of Computational and Nonlinear Dynamics Journal of Computing and Information Science in Engineering Journal of Dynamic Systems, Measurement, and Control.vigour of two-phase flow research work.

The papers cover a broad spectrum from the experimental investigation of complex fundamental aspects of two-phase flow to the study of practical devices and applications, the modelling of two-phase flow phenomena, and the numerical analysis.This paper examines the rising motion of a layer of gas bubbles next to a vertical wall in a liquid in the presence of an upward flow parallel to the wall to help with the understanding of the fluid dynamics in a bubbly upflow in vertical channels.

Only the region near the wall is simulated with an average pressure gradient applied to the domain that balances the weight of the liquid by: