Characterisation Of Turbulent Duct Flows
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Characterisation Of Turbulent Duct Flows
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Author : Bayode Owolabi
language : en
Publisher: Springer
Release Date : 2019-05-31
Characterisation Of Turbulent Duct Flows written by Bayode Owolabi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-31 with Science categories.
This book presents several new findings in the field of turbulent duct flows, which are important for a range of industrial applications. It presents both high-quality experiments and cutting-edge numerical simulations, providing a level of insight and rigour rarely found in PhD theses. The scientific advancements concern the effect of the Earth’s rotation on large duct flows, the experimental confirmation of marginal turbulence in a pressure-driven square duct flow (previously only predicted in simulations), the identification of similar marginal turbulence in wall-driven flows using simulations (for the first time by any means) and, on a separate but related topic, a comprehensive experimental study on the phenomenon of drag reduction via polymer additives in turbulent duct flows. In turn, the work on drag reduction resulted in a correlation that provides a quantitative prediction of drag reduction based on a single, measurable material property of the polymer solution, regardless of the flow geometry or concentration. The first correlation of its kind, it represents an important advancement from both a scientific and practical perspective.
Computation Of Laminar And Turbulent Flow In Curved Ducts Channels And Pipes Using The Navier Stokes Equations
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Author : R. C. Buggeln
language : en
Publisher:
Release Date : 1980
Computation Of Laminar And Turbulent Flow In Curved Ducts Channels And Pipes Using The Navier Stokes Equations written by R. C. Buggeln and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Laminar flow categories.
Both laminar and turbulent flows in strongly curved ducts, channels, and pipes are studied by numerical methods. The study concentrates on the curved square-duct geometry and flow conditions for which detailed measurements have been obtained recently by Taylor, Whitelaw, and Yianneskis. The solution methodology encompasses solution of the compressible ensemble-averaged Navier-Stokes equations at low Mach number using a split linearized block implicit (LBI) scheme, and rapid convergence on the order of 80 noniterative time steps is obtained. The treatment of turbulent flows includes resolution of the viscous sublayer region. A series of solutions for both laminar and turbulent flow and for both two- and three-dimensional geometries of the same curvature are presented. The accuracy of these solutions is explored by mesh refinement and by comparison with experiment. In summary, good qualitative and reasonable quantitative agreement between solution and experiment is obtained. Collectively, this sequence of results serves to clarify the physical structure of these flows and hence how grid selection procedures might be adjusted to improve the numerical accuracy and experimental agreement. For a three-dimensional flow of considerable complexity, the relatively good agreement with experiment obtained for the turbulent flow case despite a coarse grid must be regarded as encouraging. (Author).
Advances In Turbulence Xi
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Author : J. M. L. M. Palma
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-01-08
Advances In Turbulence Xi written by J. M. L. M. Palma and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-08 with Technology & Engineering categories.
This volume comprises the communications presented at the ETC 11, the EUROMECH European Turbulence conference held in 2007 in Porto. The scientific committee has chosen the contributions out of the following topics: Acoustics of turbulent flows; Atmospheric turbulence; Control of turbulent flows; Geophysical and astrophysical turbulence; Instability and transition; Intermittency and scaling; Large eddy simulation and related techniques; MHD turbulence; Reacting and compressible turbulence; Transport and mixing; Turbulence in multiphase and non-Newtonian flows; Vortex dynamics and structure formation; Wall bounded flows.
An Investigation Of The Turbulence In The Entrance Section Of A Rectangular Duct And A Comparison With Existing Secondary Flow
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Author : Timothy Joseph Keliher
language : en
Publisher:
Release Date : 1963
An Investigation Of The Turbulence In The Entrance Section Of A Rectangular Duct And A Comparison With Existing Secondary Flow written by Timothy Joseph Keliher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Air flow categories.
Measurements Of Laminar And Turbulent Flow In A Curved Duct With Thin Inlet Boundary Layers
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Author : A. M. K. P. Taylor
language : en
Publisher:
Release Date : 1981
Measurements Of Laminar And Turbulent Flow In A Curved Duct With Thin Inlet Boundary Layers written by A. M. K. P. Taylor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Fluid dynamic measurements categories.
Developing Flow In S Shaped Ducts Square Cross Section Duct
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Author : A. M. K. P. Taylor
language : en
Publisher:
Release Date : 1982
Developing Flow In S Shaped Ducts Square Cross Section Duct written by A. M. K. P. Taylor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Intakes (Hydraulic engineering) categories.
Turbulent Coherent Structures Secondary Currents And Sediment Ridges
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Author : Scherer, Markus Maximilian
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-06-19
Turbulent Coherent Structures Secondary Currents And Sediment Ridges written by Scherer, Markus Maximilian and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-06-19 with categories.
The origin of secondary currents and subaqueous sediment patterns in natural rivers is analysed from first principles. For this purpose, simulations of sediment transport in canonical turbulent open channel flows are performed using a numerical technique that resolves all relevant flow scales and the dynamics of the individual sand grains. The high-fidelity datasets reveal the fundamental importance of individual coherent structures for the development of sediment patterns and secondary flows.
Development Of A Three Dimensional Turbulent Duct Flow Analysis
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
language : en
Publisher:
Release Date : 1978
Development Of A Three Dimensional Turbulent Duct Flow Analysis written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Office and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Navier-Stokes equations categories.
Topological Methods In Data Analysis And Visualization Vi
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Author : Ingrid Hotz
language : en
Publisher: Springer Nature
Release Date : 2021-09-28
Topological Methods In Data Analysis And Visualization Vi written by Ingrid Hotz and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-28 with Mathematics categories.
This book is a result of a workshop, the 8th of the successful TopoInVis workshop series, held in 2019 in Nyköping, Sweden. The workshop regularly gathers some of the world’s leading experts in this field. Thereby, it provides a forum for discussions on the latest advances in the field with a focus on finding practical solutions to open problems in topological data analysis for visualization. The contributions provide introductory and novel research articles including new concepts for the analysis of multivariate and time-dependent data, robust computational approaches for the extraction and approximations of topological structures with theoretical guarantees, and applications of topological scalar and vector field analysis for visualization. The applications span a wide range of scientific areas comprising climate science, material sciences, fluid dynamics, and astronomy. In addition, community efforts with respect to joint software development are reported and discussed.
Bioaerosol Characterisation Transportation And Transmission
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Author : Yihuan Yan
language : en
Publisher: Springer Nature
Release Date : 2023-07-03
Bioaerosol Characterisation Transportation And Transmission written by Yihuan Yan and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-03 with Technology & Engineering categories.
This book aims to predict and model the transport of bioaerosols, identify their transmission characteristics, and assess occupants’ infection risks. Although existing epidemiological books provide fundamental infection rate of existing diseases, the ability of predicting emerging disease transmission in the air and assessing occupants’ infection risks to the bioaerosols is significantly lacking. This book is considered as a professional book that provides in-depth discussion of the aforementioned issues and provides potential approaches to solve these issues would be highly demanded by readers in this emerging research field. This book offers essential and systematic analysis on the fate of bioaerosols from their release in the air to the final destination in human’s respiratory systems through direct 3D visualizations techniques. It also provides quantifiable method to assess each occupant’s infection risks to the infectious bioaerosols in indoor environments. The readers will gain essential fundamental characteristics of bioaerosols (active time, viability, etc.) and will gain the advanced skills on how to integrate these properties into numerical modeling and assess the occupants’ exposure risks.