Journal ArticleDOI
Momentum and heat transfer in two-phase bubble flow—I. Theory
TLDR
In this paper, a theory is proposed which describes the transfer process of momentum and heat in a two-phase bubble flow in channels, and the eddy diffusivity to express the turbulent structure of the liquid phase is subdivided into the two components, one for the inherent wall turbulence independent of bubble agitation and the other for the additional turbulence caused by bubbles.About:
This article is published in International Journal of Multiphase Flow.The article was published on 1981-04-01. It has received 489 citations till now. The article focuses on the topics: Convective heat transfer & Heat transfer coefficient.read more
Citations
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Journal ArticleDOI
Turbulence in the liquid phase of a uniform bubbly air-water flow
Michel Lance,J. Bataille +1 more
TL;DR: In this paper, the authors describe studies of the turbulence of the liquid in a bubbly, grid-generated turbulent flow field using laser-Doppler and hot-film anemometry.
Journal ArticleDOI
A literature review on mechanisms and models for the coalescence process of fluid particles
Yixiang Liao,Dirk Lucas +1 more
TL;DR: In this article, a literature review on the mechanisms and models of coalescence of fluid particles is presented, and five categories are summarized, namely, turbulence fluctuation, viscous shear stress, capture in turbulent eddies, buoyancy and wake interaction.
Journal ArticleDOI
Bubble‐Size distributions and flow fields in bubble columns
TL;DR: In this paper, the population balance is simplified and reduced to a balance equation for the average bubble volume, which is used to predict the rate of bubble breakup and coalescence based on physical principles.
Journal ArticleDOI
Computational flow modelling and design of bubble column reactors
TL;DR: In this article, the authors reviewed the modelling efforts on the flow patterns published in the last 30 years with relatively more focus on the last 10 years, focusing on cylindrical bubble columns where results on flow pattern could be extended to the design.
Journal ArticleDOI
A two-equation turbulence model of turbulent bubbly flows
TL;DR: A two-fluid model of turbulent, adiabatic bubbly flow was implemented in the computational fluid dynamics (CFD) CFX4.2 program and validated.
References
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Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Journal ArticleDOI
On Turbulent Flow Near a Wall
TL;DR: In this paper, the authors defined the distance from wall pipe radius pipe diameter mean local velocity parallel to wall velocity fluctuations parallel and normal to flow mass density coefficient of viscosity shear stress velocity correlation coefficient mixing length universal constant in I = Ky modified universal constant eddy viscosities size of roughness friction factor = 8rw/p V 2
The Structure of Turbulence in Fully Developed Pipe Flow
TL;DR: In this paper, a hot-wire anemometer was used to measure the turbulent flow in a 10-inch pipe at speeds of approximately 10 and 100 feet per second, and the results include relevant mean and statistical quantities, such as Reynolds stresses, triple correlations, turbulent dissipation, and energy spectra.
Journal ArticleDOI
Vollständige Darstellung der turbulenten Geschwindigkeitsverteilung in glatten Leitungen
TL;DR: From experimental investigations of turbulent exchange of momentum a formula is derived for the velocity of turbulent flow in tubes and pipes in this paper, which gives a complete representation of the velocity distribution, i. e. it holds good close to the wall as well as in the core of the flow.
Journal ArticleDOI
Liquid velocity distribution in two-phase bubble flow
Y. Sato,Kotohiko Sekoguchi +1 more
TL;DR: In this article, an improved analytical treatment is developed which makes possible the satisfactory prediction of the liquid velocity distribution in two-phase bubble flow, and the agreement between the measured velocity profiles and those calculated is quite close especially in the core region of a duct.
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Drag coefficient and relative velocity in bubbly, droplet or particulate flows
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