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Author: RICHARD DOUGLAS MONTGOMERY
Publisher:
ISBN:
Category :
Languages : en
Pages : 169
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Book Description
Author: RICHARD DOUGLAS MONTGOMERY
Publisher:
ISBN:
Category :
Languages : en
Pages : 169
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Book Description
Author: Paul Piccirillo
Publisher:
ISBN:
Category :
Languages : en
Pages : 738
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Book Description
Author: Erich J. Plate
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Book Description
The report covers work done in preparation for a systematic investigation of the nature of aerodynamic roughness, and of the effect of thermal stratification on the turbulence structure in forced convection environments over rough and smooth surfaces. The investigations are based on data taken in a meteorological wind tunnel. After completion of the tunnel check out, exploratory measurements were made of the distributions of velocity and temperature in a thermally stratified flow (of unstable stratification) and of the velocity profiles above small sample plates covered with different types of sand roughness. A study of the flow of air over flexible roughness was the first comprehensive study which lead to definite conclusions. While the wind tunnel was readied for experimental work, side studies were undertaken for developing techniques for measuring profiles of mean velocities and mean temperatures, and for measuring fluctuations of temperatures and of velocities.
Author: G. Biswas
Publisher: CRC Press
ISBN: 9780849310140
Category : Technology & Engineering
Languages : en
Pages : 478
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Book Description
This book allows readers to tackle the challenges of turbulent flow problems with confidence. It covers the fundamentals of turbulence, various modeling approaches, and experimental studies. The fundamentals section includes isotropic turbulence and anistropic turbulence, turbulent flow dynamics, free shear layers, turbulent boundary layers and plumes. The modeling section focuses on topics such as eddy viscosity models, standard K-E Models, Direct Numerical Stimulation, Large Eddy Simulation, and their applications. The measurement of turbulent fluctuations experiments in isothermal and stratified turbulent flows are explored in the experimental methods section. Special topics include modeling of near wall turbulent flows, compressible turbulent flows, and more.
Author: John Henry Lienhard
Publisher:
ISBN:
Category :
Languages : en
Pages : 844
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Author: Guy Amir
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Book Description
"In this study we investigate the phenomenon of turbulent thermal diffusion of inertial and non-inertial particles in stably stratified turbulent flow. The phenomenon of turbulent thermal diffusion was predicted theoretically 20 years ago and since then was detected in laboratory and numerical experiments and confirmed by atmospheric observations. The essence of this phenomenon of turbulent thermal diffusion is the appearance of a nondiffusive mean flux of particles in the direction of the mean heat flux that results in a accumulation of particles in the vicinity of temperature minima. The theory of this effect has been previously developed only for small temperature gradients and small Stokes numbers [Elperin et al. (1996a)]. In the course of the research we conducted comprehensive measurements of spatial distributions of particles in oscillating grid turbulence and turbulent velocity distributions using Particle Image Velocimetry for various flow conditions. The temperature distribution was measured using a temperature probe that includes an array of twelve E-thermocouples." -- From the abstract.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456
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Book Description
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.
Author: James Joseph Rohr
Publisher:
ISBN:
Category : Shear flow
Languages : en
Pages : 586
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Book Description
Author: University of Michigan. Board of Regents
Publisher:
ISBN:
Category :
Languages : en
Pages : 1646
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Book Description
Author: Franz Durst
Publisher: Springer Science & Business Media
ISBN: 3642714358
Category : Science
Languages : en
Pages : 367
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Book Description
The first four symposia in the series on turbulent shear flows have been held alternately in the United States and Europe with the first and third being held at universities in eastern and western States, respectively. Continuing this pattern, the Fifth Symposium on Turbulent Shear Flows was held at Cornell University, Ithaca, New York, in August 1985. The meeting brought together more than 250 participants from around the world to present the results of new research on turbulent shear flows. It also provided a forum for lively discussions on the implications (practical or academic) of some of the papers. Nearly 100 formal papers and about 20 shorter communications in open forums were presented. In all the areas covered, the meeting helped to underline the vitality of current research into turbulent shear flows whether in experimental, theoretical or numerical studies. The present volume contains 25 of the original symposium presentations. All have been further reviewed and edited and several have been considerably extended since their first presentation. The editors believe that the selection provides papers of archival value that, at the same time, give a representative statement of current research in the four areas covered by this book: - Homogeneous and Simple Flows - Free Flows - Wall Flows - Reacting Flows Each of these sections begins with an introductory article by a distinguished worker in the field.
