Compressibility Turbulence and High Speed Flow

Compressibility  Turbulence and High Speed Flow
Author: Thomas B. Gatski,Jean-Paul Bonnet
Publsiher: Academic Press
Total Pages: 342
Release: 2013-03-05
ISBN 10: 012397318X
ISBN 13: 9780123973184
Language: EN, FR, DE, ES & NL

Compressibility Turbulence and High Speed Flow Book Review:

Compressibility, Turbulence and High Speed Flow introduces the reader to the field of compressible turbulence and compressible turbulent flows across a broad speed range, through a unique complimentary treatment of both the theoretical foundations and the measurement and analysis tools currently used. The book provides the reader with the necessary background and current trends in the theoretical and experimental aspects of compressible turbulent flows and compressible turbulence. Detailed derivations of the pertinent equations describing the motion of such turbulent flows is provided and an extensive discussion of the various approaches used in predicting both free shear and wall bounded flows is presented. Experimental measurement techniques common to the compressible flow regime are introduced with particular emphasis on the unique challenges presented by high speed flows. Both experimental and numerical simulation work is supplied throughout to provide the reader with an overall perspective of current trends. An introduction to current techniques in compressible turbulent flow analysis An approach that enables engineers to identify and solve complex compressible flow challenges Prediction methodologies, including the Reynolds-averaged Navier Stokes (RANS) method, scale filtered methods and direct numerical simulation (DNS) Current strategies focusing on compressible flow control

Compressibility Turbulence and High Speed Flow

Compressibility  Turbulence and High Speed Flow
Author: Thomas B. Gatski,Jean-Paul Bonnet
Publsiher: Academic Press
Total Pages: 344
Release: 2013-05-03
ISBN 10: 9780080976129
ISBN 13: 0080976123
Language: EN, FR, DE, ES & NL

Compressibility Turbulence and High Speed Flow Book Review:

Numerical Simulation of Shock Turbulent Boundary Layer Interaction

Numerical Simulation of Shock Turbulent Boundary Layer Interaction
Author: National Aeronautics and Space Administration (NASA)
Publsiher: Createspace Independent Publishing Platform
Total Pages: 48
Release: 2018-07-09
ISBN 10: 9781722427375
ISBN 13: 172242737X
Language: EN, FR, DE, ES & NL

Numerical Simulation of Shock Turbulent Boundary Layer Interaction Book Review:

Most flows of aerodynamic interest are compressible and turbulent. However, our present knowledge on the structures and mechanisms of turbulence is mostly based on incompressible flows. In the present work, compressibility effects in turbulent, high-speed, boundary layer flows are systematically investigated using the Direct Numerical Simulation (DNS) approach. Three-dimensional, time-dependent, fully nonlinear, compressible Navier-Stokes equations were numerically integrated by high-order finite-difference methods; no modeling for turbulence is used during the solution because the available resolution is sufficient to capture the relevant scales. The boundary layer problem deals with fully-turbulent compressible flows over flat geometries. Apart from its practical relevance to technological flows, turbulent compressible boundary layer flow is the simplest experimentally realizable turbulent compressible flow. Still, measuring difficulties prohibit a detailed experimental description of the flow, especially in the near-wall region. DNS studies provide a viable means to probe the physics of compressible turbulence in this region. The focus of this work is to explore the paths of energy transfer through which compressible turbulence is sustained. The structural similarities and differences between the incompressible and compressible turbulence are also investigated. The energy flow patterns or energy cascades are found to be directly related to the evolution of vortical structures which are generated in the near-wall region. Near-wall structures, and mechanisms which are not readily accessible through physical experiments are analyzed and their critical role on the evolution and the behavior of the flow is documented extensively. Biringen, Sedat and Hatay, Ferhat F. Unspecified Center NAG1-1472...

Combustion in High Speed Flows

Combustion in High Speed Flows
Author: John Buckmaster,Thomas L. Jackson,Ajay Kumar
Publsiher: Springer Science & Business Media
Total Pages: 643
Release: 2012-12-06
ISBN 10: 9401110506
ISBN 13: 9789401110501
Language: EN, FR, DE, ES & NL

Combustion in High Speed Flows Book Review:

This volume contains the proceedings of the Workshop on Com bustion, sponsored by the Institute for Computer Applications in Science and Engineering (ICASE) and the NASA Langley Research Center (LaRC). It was held on October 12-14, 1992, and was the sec ond workshop in the series on the subject. The first was held in 1989, and its proceedings were published by Springer-Verlag under the title "Major Research Topics in Combustion," edited by M. Y. Hussaini, A. Kumar, and R. G. Voigt. The focus of the second workshop was directed towards the development, analysis, and application of basic models in high speed propulsion of particular interest to NASA. The exploration of a dual approach combining asymptotic and numerical methods for the analysis of the models was particularly encouraged. The objectives of this workshop were i) the genesis of models that would capture or reflect the basic pllysical phenomena in SCRAMJETs and/or oblique detonation-wave engines (ODWE), and ii) the stimulation of a greater interaction between NASA exper imental research community and the academic community. The lead paper by D. Bushnell on the status and issues of high speed propulsion relevant to both the SCRAMJET and the ODWE parallels his keynote address which set the stage of the workshop. Following the lead paper were five technical sessions with titles and chairs: Experiments (C. Rogers), Reacting Free Shear Layers (C. E. Grosch), Detonations (A. K. Kapila), Ignition and Struc ture (J. Buckmaster), and Unsteady Behaviour ('1'. L. Jackson).

Heat Release Effects on Decaying Homogeneous Compressible Turbulence

Heat Release Effects on Decaying Homogeneous Compressible Turbulence
Author: Kurn Chul Lee
Publsiher: Unknown
Total Pages: 135
Release: 2010
ISBN 10: 1928374650XXX
ISBN 13: OCLC:609694976
Language: EN, FR, DE, ES & NL

Heat Release Effects on Decaying Homogeneous Compressible Turbulence Book Review:

High Mach-number compressible flows with heat release are inherently more complicated than incompressible flows due to, among other reasons, the activation of the thermal energy mode. Such flow fields can experience significant fluctuations in density, temperature, viscosity, conductivity and specific heat, which affect velocity and pressure fluctuations. Furthermore, the flow field cannot be assumed to be dilatation-free in high Mach numbers and even in low Mach-number flows involving combustion, or in boundary layers on heated walls. The main issue in these high-speed and highly-compressible flows is the effect of thermal gradients and fluctuations on turbulence. The thermal field has various routes through which it affects flow structures of compressible turbulence. First, it has direct influence through pressure, which affects turbulence via pressure-strain correlation. The indirect effects of thermal fields on compressible turbulence are through the changes in flow properties. The high temperature gradients alter the transport coefficient and compressibility of the flow. The objective of this work is to answer the following questions: How do temperature fluctuations change the compressible flow structure and energetics? How does compressibility in the flow affect the non-linear pressure redistribution process? What is the main effect of spatial transport-coefficient variation? We perform direct numerical simulations (DNS) to answer the above questions. The investigations are categorized into four parts: 1) Turbulent energy cascade and kinetic-internal energy interactions under the influence of temperature fluctuations; 2) Return-to-isotropy of anisotropic turbulence under the influence of large temperature fluctuations; 3) The effect of turbulent Mach number and dilatation level on small-scale (velocity-gradient) dynamics; 4) The effect of variable transport-coefficients (viscosity and diffusivity) on cascade and dissipation processes of turbulence. The findings lead to a better understanding of temperature fluctuation effects on non-linear processes in compressible turbulence. This improved understanding is expected to provide direction for improving second-order closure models of compressible turbulence.

On the Basic Equations for the Second Order Modeling of Compressible Turbulence

On the Basic Equations for the Second Order Modeling of Compressible Turbulence
Author: National Aeronautics and Space Adm Nasa
Publsiher: Independently Published
Total Pages: 30
Release: 2018-10-18
ISBN 10: 9781728924809
ISBN 13: 1728924804
Language: EN, FR, DE, ES & NL

On the Basic Equations for the Second Order Modeling of Compressible Turbulence Book Review:

Equations for the mean and turbulent quantities for compressible turbulent flows are derived. Both the conventional Reynolds average and the mass-weighted, Favre average were employed to decompose the flow variable into a mean and a turbulent quality. These equations are to be used later in developing second order Reynolds stress models for high speed compressible flows. A few recent advances in modeling some of the terms in the equations due to compressibility effects are also summarized. Liou, W. W. and Shih, T.-H. Glenn Research Center NASA ORDER C-99066-G; RTOP 505-62-21

Advances in Compressible Turbulent Mixing

Advances in Compressible Turbulent Mixing
Author: Anonim
Publsiher: Unknown
Total Pages: 626
Release: 1992
ISBN 10: 1928374650XXX
ISBN 13: STANFORD:36105000359872
Language: EN, FR, DE, ES & NL

Advances in Compressible Turbulent Mixing Book Review:

Turbulent Shear Layers in Supersonic Flow

Turbulent Shear Layers in Supersonic Flow
Author: Alexander J. Smits,Jean-Paul Dussauge
Publsiher: Springer Science & Business Media
Total Pages: 410
Release: 2006-05-11
ISBN 10: 0387263055
ISBN 13: 9780387263052
Language: EN, FR, DE, ES & NL

Turbulent Shear Layers in Supersonic Flow Book Review:

A good understanding of turbulent compressible flows is essential to the design and operation of high-speed vehicles. Such flows occur, for example, in the external flow over the surfaces of supersonic aircraft, and in the internal flow through the engines. Our ability to predict the aerodynamic lift, drag, propulsion and maneuverability of high-speed vehicles is crucially dependent on our knowledge of turbulent shear layers, and our understanding of their behavior in the presence of shock waves and regions of changing pressure. Turbulent Shear Layers in Supersonic Flow provides a comprehensive introduction to the field, and helps provide a basis for future work in this area. Wherever possible we use the available experimental work, and the results from numerical simulations to illustrate and develop a physical understanding of turbulent compressible flows.

On the Basic Equations for the Second order Modeling of Compressible Turbulence

On the Basic Equations for the Second order Modeling of Compressible Turbulence
Author: W. W. Liou
Publsiher: Unknown
Total Pages: 28
Release: 1991
ISBN 10: 1928374650XXX
ISBN 13: NASA:31769000599939
Language: EN, FR, DE, ES & NL

On the Basic Equations for the Second order Modeling of Compressible Turbulence Book Review:

Closure Strategies for Turbulent and Transitional Flows

Closure Strategies for Turbulent and Transitional Flows
Author: B. E. Launder,N. D. Sandham
Publsiher: Cambridge University Press
Total Pages: 754
Release: 2002-02-21
ISBN 10: 9780521792080
ISBN 13: 0521792088
Language: EN, FR, DE, ES & NL

Closure Strategies for Turbulent and Transitional Flows Book Review:

Publisher Description

Turbulence and Coherent Structures

Turbulence and Coherent Structures
Author: O. Métais,Marcel Lesieur
Publsiher: Springer Science & Business Media
Total Pages: 626
Release: 2013-03-09
ISBN 10: 9401579040
ISBN 13: 9789401579049
Language: EN, FR, DE, ES & NL

Turbulence and Coherent Structures Book Review:

In the last 25 years, one of the most striking advances in Fluid Mecha nics was certainly the discovery of coherent structures in turbulence: lab oratory experiments and numerical simulations have shown that most turbulent flows exhibit both spatially-organized large-scale structures and disorganized motions, generally at smaller scales. The develop ment of new measurement and visualization techniques have allowed a more precise characterization and investigation of these structures in the laboratory. Thanks to the unprecedented increase of computer power and to the development of efficient interactive three-dimensional colour graphics, computational fluid dynamicists can explore the still myste rious world of turbulence. However, many problems remain unsolved concerning the origin of these structures, their dynamics, and their in teraction with the disorganized motions. In this book will be found the latest results of experimentalists, theoreticians and numerical modellers interested in these topics. These coherent structures may appear on airplane wings or slender bodies, mixing layers, jets, wakes or boundary-layers. In free-shear flows and in boundary layers, the results presented here highlight the intense three-dimensional character of the vortices. The two-dimensional large scale eddies are very sensitive to three-dimensional perturbations, whose amplification leads to the formation of three-dimensional coherent vorti cal structures, such as streamwise, hairpin or horseshoe vortex filaments. This book focuses on modern aspects of turbulence study. Relations between turbulence theory and optimal control theory in mathematics are discussed. This may have important applications with regard to, e. g. , numerical weather forecasting.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1995
ISBN 10: 1928374650XXX
ISBN 13: MINN:30000006324614
Language: EN, FR, DE, ES & NL

Scientific and Technical Aerospace Reports Book Review:

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Advances in Compressible Turbulent Mixing

Advances in Compressible Turbulent Mixing
Author: Anonim
Publsiher: Unknown
Total Pages: 634
Release: 1992
ISBN 10: 1928374650XXX
ISBN 13: OCLC:727200928
Language: EN, FR, DE, ES & NL

Advances in Compressible Turbulent Mixing Book Review:

This volume includes some recent additions to original material prepared for the Princeton International Workshop on the Physics of Compressible Turbulent Mixing, held in 1988. Workshop participants were asked to emphasize the physics of the compressible mixing process rather than measurement techniques or computational methods. Actual experimental results and their meaning were given precedence over discussions of new diagnostic developments. Theoretical interpretations and understanding were stressed rather than the exposition of new analytical model developments or advances in numerical procedures. By design, compressibility influences on turbulent mixing were discussed--almost exclusively--from the perspective of supersonic flow field studies. The papers are arranged in three topical categories: Foundations, Vortical Domination, and Strongly Coupled Compressibility. The Foundations category is a collection of seminal studies that connect current study in compressible turbulent mixing with compressible, high-speed turbulent flow research that almost vanished about two decades ago. A number of contributions are included on flow instability initiation, evolution, and transition between the states of unstable flow onset through those descriptive of fully developed turbulence. The Vortical Domination category includes theoretical and experimental studies of coherent structures, vortex pairing, vortex-dynamics-influenced pressure focusing. In the Strongly Coupled Compressibility category the organizers included the high-speed turbulent flow investigations in which the interaction of shock waves could be considered an important source for production of new turbulence or for the enhancement of pre-existing turbulence. Individual papers are processed separately.

Modelling Turbulence in Engineering and the Environment

Modelling Turbulence in Engineering and the Environment
Author: Kemal Hanjalić,Brian Launder
Publsiher: Cambridge University Press
Total Pages: 135
Release: 2011-10-20
ISBN 10: 113985125X
ISBN 13: 9781139851251
Language: EN, FR, DE, ES & NL

Modelling Turbulence in Engineering and the Environment Book Review:

Modelling transport and mixing by turbulence in complex flows is one of the greatest challenges for CFD. This highly readable volume introduces the reader to a level of modelling that respects the complexity of the physics of turbulent flows – second-moment closure. Following introductory chapters providing essential physical background, the book examines in detail the processes to be modelled, from fluctuating pressure interactions to diffusive transport, from turbulent time and length scales to the handling of the semi-viscous region adjacent to walls. It includes extensive examples ranging from fundamental homogeneous flows to three-dimensional industrial or environmental applications. This book is ideal for CFD users in industry and academia who seek expert guidance on the modelling options available, and for graduate students in physics, applied mathematics and engineering who wish to enter the world of turbulent flow CFD at the advanced level.

Handbook of Fluid Dynamics

Handbook of Fluid Dynamics
Author: Richard W. Johnson
Publsiher: CRC Press
Total Pages: 1580
Release: 2016-04-06
ISBN 10: 1439849579
ISBN 13: 9781439849576
Language: EN, FR, DE, ES & NL

Handbook of Fluid Dynamics Book Review:

Handbook of Fluid Dynamics offers balanced coverage of the three traditional areas of fluid dynamics-theoretical, computational, and experimental-complete with valuable appendices presenting the mathematics of fluid dynamics, tables of dimensionless numbers, and tables of the properties of gases and vapors. Each chapter introduces a different fluid

Advanced Approaches in Turbulence

Advanced Approaches in Turbulence
Author: Paul Durbin
Publsiher: Elsevier
Total Pages: 552
Release: 2021-07-24
ISBN 10: 0128208902
ISBN 13: 9780128208908
Language: EN, FR, DE, ES & NL

Advanced Approaches in Turbulence Book Review:

Advanced Approaches in Turbulence: Theory, Modeling, Simulation and Data Analysis for Turbulent Flows focuses on the updated theory, simulation and data analysis of turbulence dealing mainly with turbulence modeling instead of the physics of turbulence. Beginning with the basics of turbulence, the book discusses closure modeling, direct simulation, large eddy simulation and hybrid simulation. The book also covers the entire spectrum of turbulence models for both single-phase and multi-phase flows, as well as turbulence in compressible flow. Turbulence modeling is very extensive and continuously updated with new achievements and improvements of the models. Modern advances in computer speed offer the potential for elaborate numerical analysis of turbulent fluid flow while advances in instrumentation are creating large amounts of data. This book covers these topics in great detail. Covers the fundamentals of turbulence updated with recent developments Focuses on hybrid methods such as DES and wall-modeled LES Gives an updated treatment of numerical simulation and data analysis

Compressible Turbulence Measurements in a Supersonic Flow With Adverse Pressure Gradient

Compressible Turbulence Measurements in a Supersonic Flow With Adverse Pressure Gradient
Author: Anonim
Publsiher: Unknown
Total Pages: 121
Release: 1994
ISBN 10: 1928374650XXX
ISBN 13: OCLC:227821443
Language: EN, FR, DE, ES & NL

Compressible Turbulence Measurements in a Supersonic Flow With Adverse Pressure Gradient Book Review:

Mean flow and compressible turbulence measurements have been obtained upstream and within a shock boundary interaction and a compression ramp in Mach 3 flow. Compressible turbulence models have met with little success in the accurate prediction of high-speed flows involving complicated shock boundary interactions and adverse pressure gradients because of a crucial lack of experimental data. Data were collected using conventional Pitot and cone static probes, single overheat cross-wire anemometry, multiple overheat cross-wire anemometry, and flow visualization techniques. Direct measurements of the total Reynolds shear stress were obtained using a turbulence transformation. Results indicate that compressibility effects, as evidenced by the density fluctuations, are large relative to the velocity fluctuations and should be accounted for rigorously in new turbulence models.

Theories of Turbulence

Theories of Turbulence
Author: Martin Oberlack,Friedrich H. Busse
Publsiher: Springer
Total Pages: 373
Release: 2014-05-04
ISBN 10: 3709125642
ISBN 13: 9783709125649
Language: EN, FR, DE, ES & NL

Theories of Turbulence Book Review:

The term "turbulence” is used for a large variety of dynamical phenomena of fluids in motion whenever the details of the flow appear to be random and average properties are of primary interest. Just as wide ranging are the theoretical methods that have been applied towards a better understanding of fluid turbulence. In this book a number of these methods are described and applied to a broad range of problems from the transition to turbulence to asymptotic turbulence when the inertial part of the spectrum is fully developed. Statistical as well as nonstatistical treatments are presented, but a complete coverage of the subject is not attempted. The book will be of interest to scientists and engineers who wish to familiarize themselves with modern developments in theories of turbulence. The fact that the properties of turbulent fluid flow are addressed from very different points of view makes this volume rather unique among presently available books on turbulence.

Compressible Turbulent Boundary Layers

Compressible Turbulent Boundary Layers
Author: Anonim
Publsiher: Unknown
Total Pages: 567
Release: 1969
ISBN 10: 1928374650XXX
ISBN 13: UVA:X004374138
Language: EN, FR, DE, ES & NL

Compressible Turbulent Boundary Layers Book Review:

Theory Methodology Tools and Applications for Modeling and Simulation of Complex Systems

Theory  Methodology  Tools and Applications for Modeling and Simulation of Complex Systems
Author: Lin Zhang,Xiao Song,Yunjie Wu
Publsiher: Springer
Total Pages: 651
Release: 2016-09-21
ISBN 10: 9811026696
ISBN 13: 9789811026690
Language: EN, FR, DE, ES & NL

Theory Methodology Tools and Applications for Modeling and Simulation of Complex Systems Book Review:

This four-volume set (CCIS 643, 644, 645, 646) constitutes the refereed proceedings of the 16th Asia Simulation Conference and the First Autumn Simulation Multi-Conference, AsiaSim / SCS AutumnSim 2016, held in Beijing, China, in October 2016. The 265 revised full papers presented were carefully reviewed and selected from 651 submissions. The papers in this third volume of the set are organized in topical sections on Cloud technologies in simulation applications; fractional calculus with applications and simulations; modeling and simulation for energy, environment and climate; SBA virtual prototyping engineering technology; simulation and Big Data.