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Building A Turbulent Jet
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Download or read book Building a Turbulent Jet written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanics of how particles diffuse, interact, eject, etc. within a fluid is applicable to numerous industrial and environmental applications. Unwanted products of combustion, dust contamination of solar panels, pathogen transport during a cough and ejections of particles during volcanic eruptions, are a few examples of flows in which increased knowledge of particle dynamics could result in substantial reduction of negative environmental and economic impacts. To better understand the tendencies of particles within shearing flows (such as jets), an extensive experimental campaign was conducted. Measurements of a turbulent round water jet were performed within an icosahedral tank. Particle tracking velocimetry was employed to create three-component, three-dimensional trajectories. Particles of varying size and weight were used to seed the flow in order to provide a range of inertial effects based on the particle interaction with the fluid. Numerous Eulerian and Lagrangian parameters were characterized and most notable, a trajectory stationarization technique was successfully implemented to address the inhomogeneity of the flow field. This approach could be extended to provide systematic methods to analyze complicated flow fields, enhancing knowledge of their dynamics. Alternatively, theoretical models of particle mechanics have been constructed, contributing to the baseline understanding of Lagrangian dynamics. Stochastic processes and phenomenological approaches are presented to accurately predict the low-order statistics of tracers, point particles which follow the motion of the fluid, for the idealized flow of homogeneous, isotropic and stationary turbulence (i.e. without the inclusions of external forces).
Book Synopsis Turbulent Jets and Plumes by : Joseph Hun-wei Lee
Download or read book Turbulent Jets and Plumes written by Joseph Hun-wei Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jets and plumes are shear flows produced by momentum and buoyancy forces. Examples include smokestack emissions, fires and volcano eruptions, deep sea vents, thermals, sewage discharges, thermal effluents from power stations, and ocean dumping of sludge. Knowledge of turbulent mixing by jets and plumes is important for environmental control, impact and risk assessment. Turbulent Jets and Plumes introduces the fundamental concepts and develops a Lagrangian approach to model these shear flows. This theme persists throughout the text, starting from simple cases and building towards the practically important case of a turbulent buoyant jet in a density-stratified crossflow. Basic ideas are illustrated by ample use of flow visualization using the laser-induced fluorescence technique. The text includes many illustrative worked examples, comparisons of model predictions with laboratory and field data, and classroom tested problems. An interactive PC-based virtual-reality modelling software (VISJET) is also provided. Engineering and science students, researchers and practitioners may use the book both as an introduction to the subject and as a reference in hydraulics and environmental fluid mechanics.
Book Synopsis Physics of Turbulent Jet Ignition by : Sayan Biswas
Download or read book Physics of Turbulent Jet Ignition written by Sayan Biswas and published by Springer. This book was released on 2018-05-03 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on developing strategies for ultra-lean combustion of natural gas and hydrogen, and contributes to the research on extending the lean flammability limit of hydrogen and air using a hot supersonic jet. The author addresses experimental methods, data analysis techniques, and results throughout each chapter and: Explains the fundamental mechanisms behind turbulent hot jet ignition using non-dimensional analysis Explores ignition characteristics by impinging hot jet and multiple jets in relation to better controllability and lean combustion Explores how different instability modes interact with the acoustic modes of the combustion chamber. This book provides a potential answer to some of the issues that arise from lean engine operation, such as poor ignition, engine misfire, cycle-to-cycle variability, combustion instability, reduction in efficiency, and an increase in unburned hydrocarbon emissions. This thesis was submitted to and approved by Purdue University.
Book Synopsis Development of a Two-dimensional Turbulent Jet Under Natural and Excited Conditions by : Flint Owen Thomas
Download or read book Development of a Two-dimensional Turbulent Jet Under Natural and Excited Conditions written by Flint Owen Thomas and published by . This book was released on 1987 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Turbulent Jets by : Genrikh Naumovich Abramovich
Download or read book The Theory of Turbulent Jets written by Genrikh Naumovich Abramovich and published by . This book was released on 1963 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes by : P.A. Davies
Download or read book Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes written by P.A. Davies and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Challenging problems involvrllg jet and plume phenomena are common to many areas of fundamental and applied scientific research, and an understanding of plume and jet behaviour is essential in many geophysical and industrial contexts. For example, in the field of meteorology, where pollutant dispersal takes place by means of atmospheric jets and plumes formed either naturally under conditions of convectively-driven flow in the atmospheric boundary layer, or anthropogenically by the release of pollutants from tall chimneys. In other fields of geophysics, buoyant plumes and jets are known to play important roles in oceanic mixing processes, both at the relatively large scale (as in deep water formation by convective sinking) and at the relatively small scale (as with plume formation beneath ice leads, for example). In the industrial context, the performances of many engineering systems are determined primarily by the behaviour of buoyant plumes and jets. For example, (i) in sea outfalls, where either sewage or thermal effluents are discharged into marine and/or freshwater environments, (ii) in solar ponds, where buoyant jets are released under density interfaces, (iii) in buildings, where thermally-generated plumes affect the air quality and ventilation properties of architectural environments, (iv) in rotating machinery where fluid jet~ are used for cooling purposes, and (v) in long road and rail tunnels, where safety and ventilation prcedures rely upon an understanding of the behaviour of buoyant jets. In many other engineering and oceanographic contexts, the properties of jets and plumes are of great importance.
Book Synopsis Computational Fluid Dynamics and Energy Modelling in Buildings by : Parham A. Mirzaei
Download or read book Computational Fluid Dynamics and Energy Modelling in Buildings written by Parham A. Mirzaei and published by John Wiley & Sons. This book was released on 2022-11-14 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: COMPUTATIONAL FLUID DYNAMICS AND ENERGY MODELLING IN BUILDINGS A Comprehensive Overview of the Fundamentals of Heat and Mass Transport Simulation and Energy Performance in Buildings In the first part of Computational Fluid Dynamics and Energy Modelling in Buildings: Fundamentals and Applications, the author explains the fundamentals of fluid mechanics, thermodynamics, and heat transfer, with a specific focus on their application in buildings. This background knowledge sets the scene to further model heat and mass transport in buildings, with explanations of commonly applied simplifications and assumptions. In the second part, the author elaborates how the fundamentals explained in part 1 can be used to model energy flow in buildings, which is the basis of all commercial and educational building energy simulation tools. An innovative illustrative nodal network concept is introduced to help readers comprehend the basics of conservation laws in buildings. The application of numerical techniques to form dynamic simulation tools are then introduced. In general, understanding these techniques will help readers to identify and justify their choices when working with building energy simulation tools, rather than using default settings. Detailed airflow information in buildings cannot be obtained in building energy simulation techniques. Therefore, part three is focused on introducing computational fluid dynamics (CFD) as a detailed modelling technique for airflow in buildings. This part starts with an introduction to the fundamentals of the finite volume method used to solve the governing fluid equations and the related challenges and considerations are discussed. The last chapter of this part covers the solutions to some practical problems of airflow within and around buildings. The key aspect of Computational Fluid Dynamics and Energy Modelling in Buildings: Fundamentals and Applications is that it is tailored for audiences without extensive past experience of numerical methods. Undergraduate or graduate students in architecture, urban planning, geography, architectural engineering, and other engineering fields, along with building performance and simulation professionals, can use this book to gain additional clarity on the topics of building energy simulation and computational fluid dynamics.
Book Synopsis Investigation of Turbulent Jet Impingement in a Confined Crossflow by : George D. Catalano
Download or read book Investigation of Turbulent Jet Impingement in a Confined Crossflow written by George D. Catalano and published by . This book was released on 1991 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements and computations are reported for the flow of a turbulent jet discharging into a crossflow confined between two parallel plates. For jet-to-crossflow velocity ratios R equal to 2 and 4, mean and fluctuating velocity components are measured by a laser Doppler anemometer. High order statistics of the streamwise velocity and its time derivative have been measured in the plane of symmetry of a jet in a confined crossflow. The existence of universal similarity of the fine scale structure of a developing turbulent velocity field and the validity of original Kolmogorov local similarity theory and later formulations were investigated. Construction of normalized spectral for energy content, dissipation, and higher order moments enable an examination of the Reynolds number dissipation, and higher order moments enable an examination of the Reynolds number dependence of these functions for the Re sub lamda range from 16 to 800. Estimates of the Kolmogorov constant, mu, ranging from 0.27 to 0.43 were obtained with the arithmetic average equal to 0.38. The fractal dimension of the fine scale structure was estimated from the functional relationship between the flatness of the velocity time derivative and Re sub lambda. For unfiltered data, the fractal dimension was estimated to be 2.45. However, with a + or - 12 sigma bandwidth, the fractal dimension increased to 2. 73.
Book Synopsis Experiments on a Turbulent Jet in a Cross Flow by : Yasuhiro Kamotani
Download or read book Experiments on a Turbulent Jet in a Cross Flow written by Yasuhiro Kamotani and published by . This book was released on 1971 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Theory of Turbulent Jets by : G. N. Abramovich
Download or read book The Theory of Turbulent Jets written by G. N. Abramovich and published by Mit Press. This book was released on 1963 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author's first monograph on turbulent jets, in 1936, dealt solely with a free submerged jet. Since that time, the theory of the turbulent jet has been developed in many published works both in the USSR and abroad: it has been enriched with a large amount of experimental material and has been applied in many new fields of engineering. In the last 10 years very substantial progress has been made, and it has now become possible to go beyond the free submerged jet and to solve the problem of a jet in a stream of fluid, to take into account the interaction between the jet and solid walls, to ascertain the relationship between the contour of the jet and the ratio of its density to the density of the surrounding medium, and to establish the characteristic features of a supersonic jet. This monograph contains the results of further research by the author and his colleagues, as well as a critical reappraisal of the more important theoretical and experimental data published by other investigators. The first section deals with the theory of a turbulent jet of incompressible fluid. It gives a systematic analysis of numerous experimental data on velocity profiles, temperature, and the impurity concentration, as well as the outlines of the turbulent mixing lone. The second section sets forth the theory of turbulent gas jets, including strongly preheated and supersonic jets. The theory of free turbulence in a gas, suitable in principle for any degree of compressibility, is revised, and the equations are derived for motion and heat exchange in the boundary layer of a jet at very high temperature. The third section solves several problems of the spreading of jets in finite and semifinite space, and the fourth section describes various applications of the theory of jets, many of which are reported for the first time or have been significantly revised.
Book Synopsis The Curved, Turbulent Jet by : Frank James Smith
Download or read book The Curved, Turbulent Jet written by Frank James Smith and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Enclosed Turbulent Jet Near a Solid Wall: Initial Flow Development by : Kevin Ness
Download or read book An Enclosed Turbulent Jet Near a Solid Wall: Initial Flow Development written by Kevin Ness and published by . This book was released on 2007 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: LDV measurements were taken of a turbulent jet inside an enclosure. Measurements were taken in the development region of the turbulent jet at the varying downstream stations. The enclosure fixed the position of the jet but contained a moveable interior wall. Measurements were taken with the wall at three different positions relative to the jet exit. The jet being studied had an exit Reynolds number of 20000.
Book Synopsis The Impulsively Started Incompressible Turbulent Jet by :
Download or read book The Impulsively Started Incompressible Turbulent Jet written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixing in Turbulent Jet Flows by : John Michael Challen
Download or read book Mixing in Turbulent Jet Flows written by John Michael Challen and published by . This book was released on 1969 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The two-dimensional turbulent jet by : אפהים גותמרכ
Download or read book The two-dimensional turbulent jet written by אפהים גותמרכ and published by . This book was released on 1970 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The two-phase turbulent jet by : Wallace Kendall Melville
Download or read book The two-phase turbulent jet written by Wallace Kendall Melville and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbulent jets in confined spaces : application in mixing ventilation experimental and numerical studies by : Taghi Karimipanah
Download or read book Turbulent jets in confined spaces : application in mixing ventilation experimental and numerical studies written by Taghi Karimipanah and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
