Journal ArticleDOI
Dynamic Numerical Simulation of Gas-Liquid Two Phase Flows, Euler-Euler versus Euler-Lagrange
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TLDR
In this article, a dynamical, two-phase flow model in two-and three-space coordinates is presented, where the gas-liquid flow is modeled by a Navier-Stokes system of equations in an Eulerian representation.About:
This article is published in Chemical Engineering Science.The article was published on 1997-02-01. It has received 267 citations till now. The article focuses on the topics: Backward Euler method & Semi-implicit Euler method.read more
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Dissertation
Computational fluid dynamics of dispersed two-phase flows at high phase fractions
TL;DR: In this paper, the authors describe the development and validation of Computational Fluid Dynamics (CFD) methodology for the simulation of dispersed two-phase flows, which employs averaged mass and momentum conservation equations to describe the time-dependent motion of both phases.
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
Large eddy simulation of the Gas-Liquid flow in a square cross-sectioned bubble column
TL;DR: In this article, the use of large eddy simulations (LES) in numerical simulations of the gas-liquid flow in bubble columns is studied, and the LES shows better agreement with the experimental data than simulations using the k-var epsilon model, when the drag, lift and virtual mass forces are used, the transient behaviour that was observed in experiments can be captured.
Journal ArticleDOI
Simulation of buoyancy driven bubbly flow: Established simplifications and open questions
TL;DR: In this paper, the authors present an assessment of the current state of modeling and simulation of buoyancy driven gas-liquid bubble flow based on the two-fluid approach and discuss the admissible model simplifications to obtain a more easily solvable model together with the question of which physical effects are of prime importance and which reliable correlations can be recommended or are still missing.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Journal ArticleDOI
Numerical Calculation of Time‐Dependent Viscous Incompressible Flow of Fluid with Free Surface
Francis H. Harlow,J. Eddie Welch +1 more
TL;DR: In this paper, a new technique is described for the numerical investigation of the time-dependent flow of an incompressible fluid, the boundary of which is partially confined and partially free The full Navier-Stokes equations are written in finite-difference form, and the solution is accomplished by finite-time step advancement.
Book
Numerical methods for conservation laws
TL;DR: In this paper, the authors describe the derivation of conservation laws and apply them to linear systems, including the linear advection equation, the Euler equation, and the Riemann problem.
Book
Bubble wake dynamics in liquids and liquid-solid suspensions
Liang-Shih Fan,Katsumi Tsuchiya +1 more
TL;DR: Single bubble rise characteristics wake structure wake instability - formation and shedding wake sizes wake solids concentration wake flow and pressure wake effects in various flow systems wake effects on mass and heat transfer and chemical reactions.
Journal ArticleDOI
Gas—liquid flow in bubble columns and loop reactors: Part II. Comparison of detailed experiments and flow simulations
TL;DR: In this article, a flat bubble column with rectangular cross-section and essentially two-dimensional flow structure was studied in terms of gas-liquid bubble flow and the experimental results were compared with numerical simulations based upon the dynamic laminar 2D two-phase Euler-Euler model presented in Part I.