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Characterisation Of Turbulent Duct Flows
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Book Synopsis Characterisation of Turbulent Duct Flows by : Bayode Owolabi
Download or read book Characterisation of Turbulent Duct Flows written by Bayode Owolabi and published by Springer. This book was released on 2019-05-31 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Characterisation of Turbulent Duct Flows: Experiments and Direct Numerical Simulations by : 貝德
Download or read book Characterisation of Turbulent Duct Flows: Experiments and Direct Numerical Simulations written by 貝德 and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Renormalization Group Analysis of Turbulent Flow in a Square Duct by : Joseph Michael Barton
Download or read book Renormalization Group Analysis of Turbulent Flow in a Square Duct written by Joseph Michael Barton and published by . This book was released on 2000 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Topological Methods in Data Analysis and Visualization VI by : Ingrid Hotz
Download or read book Topological Methods in Data Analysis and Visualization VI written by Ingrid Hotz and published by Springer Nature. This book was released on 2021-09-28 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Advances in Turbulence XI by : J. M. L. M. Palma
Download or read book Advances in Turbulence XI written by J. M. L. M. Palma and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 825 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Characteristics of Turbulent Flow in Ducts with Temperature Gradient by : Richard Warring Kunstman
Download or read book Characteristics of Turbulent Flow in Ducts with Temperature Gradient written by Richard Warring Kunstman and published by . This book was released on 1952 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Aeronautics and Space Administration. Scientific and Technical Information Office Publisher : ISBN 13 : Total Pages :122 pages Book Rating :4.:/5 (317 download)
Book Synopsis Development of a Three-dimensional Turbulent Duct Flow Analysis by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
Download or read book Development of a Three-dimensional Turbulent Duct Flow Analysis written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Office and published by . This book was released on 1978 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Turbulent Flow in Square Duct by Using Multiple-Relaxation Time Lattice Boltzmann Method and Large Eddy Simulation by : 劉士煌
Download or read book Analysis of Turbulent Flow in Square Duct by Using Multiple-Relaxation Time Lattice Boltzmann Method and Large Eddy Simulation written by 劉士煌 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1984 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonsteady Duct Flow by : George Rudinger
Download or read book Nonsteady Duct Flow written by George Rudinger and published by . This book was released on 1969 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbulent Flow Characteristics in an S-Shaped Diffusing Duct by : J. H. Whitelaw
Download or read book Turbulent Flow Characteristics in an S-Shaped Diffusing Duct written by J. H. Whitelaw and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Velocity characteristics of the flow in a round cross-sectional S-shaped shaped diffusing duct with an offset of 0.3 of the length (axial) of the duct were measured, using laser-Doppler anemometry and refractive index matching technique, with two inlet boundary layer thicknesses, corresponding to 0.5 and 0.2 of the inlet duct diameter at a fixed Reynolds number of 40,000. The duct had inlet and exit diameters of 48 mm and 56.8 mm respectively, a length of 170.4 mm and an offset between the centre-line of the inlet and exit of 51.1 mm and the dimensions corresponded to a scaled model of the Royal Aerospace Establishment 2129 duct used for jet aircraft initiates. The previously speculated incipient separation regions were confirmed and found to be larger with the thinner inlet boundary layer and, as a consequence, the exit mean flow distribution consisted of a large pair of contra-rotating vortices occupying almost half of the cross-section, with maximum second mean velocity 20% or the inlet bulk velocity, compared to a third of the cross-section in the thicker inlet boundary layer and with maximum secondary mean velocity 15% of the inlet bulk velocity. (Author).
Book Synopsis Intermittency and Self-Organisation in Turbulence and Statistical Mechanics by : Eun-jin Kim
Download or read book Intermittency and Self-Organisation in Turbulence and Statistical Mechanics written by Eun-jin Kim and published by MDPI. This book was released on 2019-07-29 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue Intermittency and Self-Organisation in Turbulence and Statistical Mechanics that was published in Entropy
Book Synopsis Introduction to Engineering Fluid Mechanics by : Marcel Escudier
Download or read book Introduction to Engineering Fluid Mechanics written by Marcel Escudier and published by Oxford University Press. This book was released on 2017 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid mechanics concerns the way fluids flow in response to imposed stresses. This textbook includes numerous examples of practical applications of the theoretical ideas, such as calculations of the thrust of a jet engine, the power output of a gas turbine and forces created by liquid flow through a pipe bend or junction.
Book Synopsis A Three-dimensional Turbulent Compressible Subsonic Duct Flow Analysis for Use with Constructed Coordinate Systems by :
Download or read book A Three-dimensional Turbulent Compressible Subsonic Duct Flow Analysis for Use with Constructed Coordinate Systems written by and published by . This book was released on 1985 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioaerosol Characterisation, Transportation and Transmission by : Yihuan Yan
Download or read book Bioaerosol Characterisation, Transportation and Transmission written by Yihuan Yan and published by Springer Nature. This book was released on 2023-07-03 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Computation of Laminar and Turbulent Flow in Curved Ducts, Channels, and Pipes Using the Navier-Stokes Equations by : R. C. Buggeln
Download or read book Computation of Laminar and Turbulent Flow in Curved Ducts, Channels, and Pipes Using the Navier-Stokes Equations written by R. C. Buggeln and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Turbulent flow through a duct with curvilinear obstruction by :
Download or read book Turbulent flow through a duct with curvilinear obstruction written by and published by . This book was released on 1909 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No presente trabalho é realizada uma análise do desempenho de três diferentes modelos de turbulência na previsão de escoamentos que apresentam separação e recolamento. Investigou-se o escoamento turbulento através de dutos com obstruções curvilíneas. Os modelos selecionados pertencem a classe de modelos de duas equações diferenciais k-e para baixos números de Reynolds. A análise tem por objetivo verificar se estes modelos são capazes de captar as regiões de recirculação e recuperação de pressão após a obstrução, grandezas fundamentais para a avaliação da distribuição de tensões. Oscampos de velocidade, energia cinética turbulenta, taxa de dissipação obtidos pelos diferentes modelos são comparados com dados numéricos e experimentais na literatura, visando identificar qual é o modelo mais adequado para esse tipo de escoamento. Para a determinação numérica do escoamento na geometria com uma obstrução curvilínea, do tipo cossenoidal, utilizou-se o método de volumes finitos com coordenadas curvilíneas não ortogonais que se adaptam à geometria. Os componentes contravariantes da velocidade foram empregadas como variáveis independentes nas equações de conservaçãode quantidade de movimento e o acoplamento velocidade pressão foi resolvido pelo algoritmo SIMPLEC. Dentre os modelos testados, nenhum conseguiu reproduzir exatamente todos os dados experimentais, porém concluiu-se que o modelo LSH, proposto por Launder e Sharma (1974) com a modificação proposta por Hanjalic e Launder (1980) apresentou o melhor desempenho, o qual pode ser considerado como satisfatório.
