Compressible Turbulent Plane Couette Flow PDF Download
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Author: Robert H. Korkegi
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 0
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Author: Robert H. Korkegi
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 0
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Book Description
Author: Robert H. Korkegi
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 22
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Book Description
Author: Robert H. Korkegi
Publisher:
ISBN:
Category :
Languages : en
Pages : 27
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Book Description
Equations describing compressible turbulent plane Couette flow for the general case of arbitrary wall enthalpy have been developed for a perfect gas based on the von Karman mixing length model. The procedure used was to obtain the velocity distribution near each wall and determine the matching point of the two profiles by the requirement that the velocities and their slopes must be equal at this point. Sample results are given in terms of the influence of heat transfer on velocity, enthalpy, and skin-friction distributions. (Author).
Author: Michel Deville
Publisher: Springer Science & Business Media
ISBN: 3642002625
Category : Technology & Engineering
Languages : en
Pages : 166
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Book Description
Contains seven keynote lectures of the TI 2006 conference that was held in Porquerolles, May 29-June 2, 2006. This book offers a view on theory, experiments and numerical simulations in the field of turbulence.
Author: Thomas B. Gatski
Publisher: Elsevier
ISBN: 0080559123
Category : Science
Languages : en
Pages : 296
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Book Description
This book 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. For the computation of turbulent compressible flows, current methods of averaging and filtering are presented so that the reader is exposed to a consistent development of applicable equation sets for both the mean or resolved fields as well as the transport equations for the turbulent stress field. For the measurement of turbulent compressible flows, current techniques ranging from hot-wire anemometry to PIV are evaluated and limitations assessed. Characterizing dynamic features of free shear flows, including jets, mixing layers and wakes, and wall-bounded flows, including shock-turbulence and shock boundary-layer interactions, obtained from computations, experiments and simulations are discussed. Describes prediction methodologies including the Reynolds-averaged Navier Stokes (RANS) method, scale filtered methods and direct numerical simulation (DNS) Presents current measurement and data analysis techniques Discusses the linkage between experimental and computational results necessary for validation of numerical predictions Meshes the varied results of computational and experimental studies in both free and wall-bounded flows to provide an overall current view of the field
Author: Raphael Gotthard Harald Arlitt
Publisher: Cuvillier Verlag
ISBN: 3865373461
Category :
Languages : en
Pages : 221
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Author: Wai-Man Ho
Publisher: Open Dissertation Press
ISBN: 9781361404836
Category :
Languages : en
Pages :
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Book Description
This dissertation, "A Numerical Study on Turbulent Oscillatory Plane Couette Flow" by Wai-man, Ho, 何慧敏, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of the thesis entitled A Numerical Study On Turbulent Oscillatory Plane Couette Flow Submitted by Wai-man Ho for the degree of Master of Philosophy at The University of Hong Kong in June 2004 Steady turbulent plane Couette flow can be readily solved by assuming that the classical log-laws hold locally near the walls. In a sharp contrast, no simple analyses are available if the flow becomes unsteady, as in the case when one of the walls oscillates periodically with time in its own plane. Difficulties arise owning to the time-dependent accelerating terms in the Navier-Stokes equations. The oscillatory boundary may lead to a periodic flow reversal and therefore a detachment of the boundary layer from the wall. Therefore the classical theory of wall turbulence no longer applies to the turbulent oscillatory plane Couette flow. The problem is now handled with the computational technique known as direct numerical simulation (DNS). In this study, turbulent structures and passive scalar transport in an oscillatory plane Couette flow at Reynolds number of 5000 are studied numerically by solving the unsteady incompressible Navier-Stokes equations directly. The oscillatory plane Couette flow consists of a working fluid isandwiched between a lower stationary wall and an upper wall that moves with a prescribed velocity of UA =1+ sin(2πft), where the velocity ratio A = 0, 1/4 and 1/2. The calculation is made using a three-dimensional trilinear Galerkin finite element code. Implicit coupling between velocity and pressure is handled by a fractional-step method. The convection and diffusion terms are respectively computed by the third-order accurate Runge Kutta method and the second-order accurate Crank-Nicolson method. In the oscillatory flow, the velocity and its components are significantly influenced under the wall-oscillation. The scalar transport, however, almost exhibits a consistency in the flows. Comparisons are also made of temperature fluctuations, correlation coefficients, shear stress and heat flux. Although there is no symmetry in the oscillatory-flow channel, most of the DNS data still agrees well with the lower part of the steady-flow channel. Finally, the flow visualization further illustrates the mechanism of high-speed fluid and hot streaky structure. ii DOI: 10.5353/th_b2977083 Subjects: Turbulence - Mathematical models Fluid dynamics
Author: James M Robertson
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 198
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Author: Robert H. Korkegi
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 60
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Book Description
The research was designed to gain understanding of the flow of air at high speeds over the components of lifting supersonic and hypersonic vehicles--wings, flaps, fins, inlets--and their interactions with respect to heating, surface friction, pressure, and aerodynamic forces. The objective was to help predict (a) flows on complex aerospace vehicle configurations in high-speed flight and (b) the location of areas of high heating. The research covers the areas of laminar and turbulent boundary layers, boundary layer transition, boundary layer separation, base flows and wakes, low density flows, three-dimensional interactions, viscous flow problems, and some flow measurement techniques.
Author: Sean H. Hu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
