Analysis of Gas-phase Mass Transfer in Turbulent Flows PDF Download

Author: Darshanlal Tilakchand Wasan
Publisher:
ISBN:
Category :
Languages : en
Pages : 484

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Sean C. Garrick
Publisher: Springer
ISBN: 3319595849
Category : Science
Languages : en
Pages : 71

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This Brief focuses on the dispersion of high-porosity particles, their entrainment into the vapor-laden stream, and the condensation of vapor onto the particles. The authors begin with a simple/static problem, focusing on transport within the particle. They go on to consider the high-resolution simulation of particles in a turbulent flow and the time-dependent evolution of the fluid-particle fields. Finally, they examine the more computationally-affordable large-eddy simulation of gas-to-particle mass-transfer. The book ends with a summary and challenges as well as directions for the area.

Author: Roland Borghi
Publisher: John Wiley & Sons
ISBN: 1848216173
Category : Science
Languages : en
Pages : 462

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Numerous industrial systems or natural environments involve multiphase flows with heat and mass transfer. The authors of this book present the physical modeling of these flows, in a unified way, which can include various physical aspects and several levels of complexity. Thermal engineering and nuclear reactors; the extraction and transport of petroleum products; diesel and rocket engines; chemical engineering reactors and fluidized beds; smoke or aerosol dispersion; landslides and avalanches &− the modeling of multiphase flows with heat and mass transfer for all these situations can be developed following a common methodology. This book is devoted to the description of the mathematical bases of how to incorporate adequate physical ingredients in agreement with known experimental facts and how to make the model evolve according to the required complexity. Contents Part 1. Approach and General Equations 1. Towards a Unified Description of Multiphase Flows. 2. Instant Equations for a Piecewise Continuous Medium. 3. Description of a “Mean Multiphase Medium”. 4. Equations for the Mean Continuous Medium. Part 2. Modeling: A Single Approach Adaptable to Multiple Applications 5. The Modeling of Interphase Exchanges. 6. Modeling Turbulent Dispersion Fluxes. 7. Modeling the Mean Gas–Liquid Interface Area per Unit Volume. 8. “Large Eddy Simulation” Style Models. 9. Contribution of Thermodynamics of Irreversible Processes. 10. Experimental Methods. 11. Some Experimental Results Pertaining to Multiphase Flow Properties that Are Still Little Understood. Part 3. From Fluidized Beds to Granular Media 12. Fluidized Beds. 13. Generalizations for Granular Media. 14. Modeling of Cauchy Tensor of Sliding Contacts. 15. Modeling the Kinetic Cauchy Stress Tensor. Part 4. Studying Fluctuations and Probability Densities 16. Fluctuations of the Gas Phase in Reactive Two-Phase Media. 17. Temperature Fluctuations in Condensed Phases. 18. Study of the PDF for Velocity Fluctuations and Sizes of Parcels. About the Authors Roland Borghi is Professor Emeritus at Ecole Centrale Marseille in France and works as a consultant in the space, petrol and automobile sectors. His research activities cover fluid mechanics, combustion and flames, and multi-phase and granular flows. He was a member of the CNRS scientific committee and a laureate of the French Academy of Science. Fabien Anselmet is Professor at Ecole Centrale Marseille in France. His research activities focus on the turbulence of fluids and its varied applications in industry and in fields linked to the environment. With a unified, didactic style, this text presents tangible models of multiphase flows with heat and mass transfer with attention to various levels of complexities. It addresses thermal engineering and nuclear reactors, extraction and transport of petroleum products, diesel engines and rocket engines, chemical engineering reactors and fluidized beds, smoke or aerosol dispersion, and landslides and avalanches. Engineers, researchers, and scientists will appreciate the discussions of modeling principles, flows and granular media, and fluctuations around averages.

Author: Kemal Hanjalić
Publisher: Begell House Publishers
ISBN: 9781567000405
Category : Technology & Engineering
Languages : en
Pages : 580

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Over 90 papers presented, from turbulence structure to computation of complex flows, and heat and mass transfer.

Author: Aleksei Y. Varaksin
Publisher: Springer Science & Business Media
ISBN: 3540680543
Category : Science
Languages : en
Pages : 204

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This book presents results of experimental and theoretical studies of "gas-solid particles" turbulent two-phase flows. It analyzes the characteristics of heterogeneous flows in channels (pipes), as well as those in the vicinity of the critical points of bodies subjected to flow and in the boundary layer developing on their surface. Coverage also treats in detail problems of physical simulation of turbulent gas flows which carry solid particles.

Author: Vedat S Arpaci
Publisher: CRC Press
ISBN: 9789056995652
Category : Science
Languages : en
Pages : 228

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This monograph presents the microscales of complex (buoyant, thermocapillary, two-phase, reacting, radiating, pulsating, etc.) turbulent flows and interprets heat and mass transfer correlations in terms of these scales. The author introduces a general methodology for the development of microscales for complex turbulent flows. Then he provides, by these scales, a fundamental interpretation for a number of momentum, heat, and mass transfer correlations which are assumed to be empirical. Lastly, he develops correlations in terms of these scales for environmentally and/or technologically important problems related to buoyancy driven flows, pulsating flows, diffusion flows, fires, etc.

Author: James R. Welty
Publisher: John Wiley & Sons
ISBN: 9788126515264
Category :
Languages : en
Pages : 780

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Fundamentals of Momentum, Heat, and Mass Transfer provides a unified treatment of momentum transfer (fluid mechanics), heat transfer and mass transfer. The treatment of the three areas of transport phenomena is done sequentially. The subjects of momentum, heat, and mass transfer are introduced, in that order, and appropriate analysis tools are developed.· Conservation Of Mass: Control-Volume Approach· Newton's Second Law Of Motion: Control-Volume Approach· Conservation Of Energy: Control-Volume Approach· Shear Stress In Laminar Flow· Analysis Of A Differential Fluid Element In Laminar Flow· Differential Equations Of Fluid Flow· Inviscid Fluid Flow· Dimensional Analysis· Viscous Flow· The Effect Of Turbulence On Momentum Transfer· Flow In Closed Conduits· Fundamentals Of Heat Transfer· Differential Equations Of Heat Transfer· Steady-State Conduction· Unsteady-State Conduction· Convective Heat Transfer· Convective Heat-Transfer Correlations· Boiling And Condensation· Heat-Transfer Equipment· Radiation Heat Transfer· Fundamentals Of Mass Transfer· Differential Equations Of Mass Transfer· Steady-State Molecular Diffusion· Unsteady-State Molecular Diffusion· Convective Mass Transfer· Convective Mass Transfer Between Phases· Convective Mass-Transfer Correlations · Mass-Transfer Equipment

Author: Carroll O. Bennett
Publisher: McGraw-Hill Companies
ISBN:
Category : Science
Languages : en
Pages : 834

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Author: Karl Minsker
Publisher: CRC Press
ISBN: 9067644099
Category : Technology & Engineering
Languages : en
Pages : 184

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This book deals with the fundamental laws of passing of fast liquid-phase chemical as well as heat and mass transfer processes in turbulent flows. The fundamental laws of passing of fast liquid-phase chemical and also heat and mass transfer processes in turbulent flows are considered in the book. Development of a macrokinetics approach is generalized to the analysis of fast chemical reactions mainly based on an example of cationic isobutylene polymerization, which falls into to a new class of liquid-phase processes. The ways of decision of the hydrodynamical, thermal and kinetic movement’s equations of reaction mixture in which the fast exothermic chemical reaction runs are described. The principles and laws of formation of the essentially new mode of quasi-plug-flow mode are considered in turbulent flows ensuring quasi-isothermal conditions in zone reaction. The principles of work and area of industrial use of tubular turbulent devices cylindrical reactor, divergent-covergent reactor, shell-and-tube reactor, and reactor with fractional introduction of reactants are considered.