Some Problems Of The Calculation Of Three Dimensional Boundary Layer Flows On General Configurations PDF Download

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Computational Fluid Mechanics and Heat Transfer, Second Edition

Computational Fluid Mechanics and Heat Transfer, Second Edition
Author: Richard H. Pletcher
Publisher: CRC Press
Total Pages: 828
Release: 1997-04-01
Genre: Science
ISBN: 9781560320463

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This comprehensive text provides basic fundamentals of computational theory and computational methods. The book is divided into two parts. The first part covers material fundamental to the understanding and application of finite-difference methods. The second part illustrates the use of such methods in solving different types of complex problems encountered in fluid mechanics and heat transfer. The book is replete with worked examples and problems provided at the end of each chapter.


Calculation of Three-dimensional Boundary Layers on Bodies at Incidence

Calculation of Three-dimensional Boundary Layers on Bodies at Incidence
Author: V. C. Patel
Publisher:
Total Pages: 32
Release: 1982
Genre: Turbulent boundary layer
ISBN:

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Three-dimensional thin boundary-layer equations for laminar and turbulent flows are solved by two different numerical schemes. The methods are applied to the flow over bodies of revolution at incidence and the results are compared with the available experimental data in order to study the range of validity of the classical boundary-layer approximations in regions of increasing circumferential gradients and flow reversal associated with the early stages of a free-vortex type of separation. Comparison with the DFVLR 6:1 spheroid data of Meier et al and the 4:1 combination-body data of Ramaprian, Patel and Choi indicate that the methods perform well in regions where the boundary layer remains thin but the predictions deteriorate as the boundary layer thickens. The results point out the need for the development of methods of handle thick boundary layers and viscous-inviscid interactions. (Author).


Computational Fluid Mechanics and Heat Transfer

Computational Fluid Mechanics and Heat Transfer
Author: Dale Anderson
Publisher: Taylor & Francis
Total Pages: 763
Release: 2016-04-19
Genre: Science
ISBN: 1466578300

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Thoroughly updated to include the latest developments in the field, this classic text on finite-difference and finite-volume computational methods maintains the fundamental concepts covered in the first edition. As an introductory text for advanced undergraduates and first-year graduate students, Computational Fluid Mechanics and Heat Transfer, Thi


Calculation of Three-dimensional Boundary Layers on Ship Forms

Calculation of Three-dimensional Boundary Layers on Ship Forms
Author: Kua C. Chang
Publisher:
Total Pages: 220
Release: 1975
Genre: Boundary layer
ISBN:

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An implicit finite difference technique, in curvilin ear-orthogonal surface coordinates, has been developed for the solution of the differential equations of three-dimensional laminar and turbulent boundary layers on ship forms. For turbulent flow, a two-layer eddy-viscosity model has been employed as the closure model. The initial and boundary conditions required to solve the equations and the stability and accuracy of the numerical method are discussed at some length. Two mathematically-defined simple three-dimensional ship forms are studied in some detail. These are a tri-axial ellipsoid and a double elliptic ship.


The Singular Nature of Three-dimensional Perturbations of Boundary Layers and the Small Cross Flow Theory

The Singular Nature of Three-dimensional Perturbations of Boundary Layers and the Small Cross Flow Theory
Author: Raymond Sedney
Publisher:
Total Pages: 26
Release: 1975
Genre: Boundary layer
ISBN:

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Three-dimensional perturbations on two-dimensional boundary layer flows are considered. First initially induced perturbations are studied and a general solution obtained. Second a specific externally induced perturbation is discussed. In both the streamwise velocity perturbation becomes infinite but the cross flow decays as downstream infinity is approached. This implies that the small cross flow approximation is a singular perturbation. The basis for this lies in the fact that the nature of the equations is changed by the approximation, viz., the zone of dependence property is lost.