Using the Boundary-layer Equation in 3-dimensional Viscous Flow Simulation

Using the Boundary-layer Equation in 3-dimensional Viscous Flow Simulation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20

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Using the Boundary-layer Equation in 3-dimensional Viscous Flow Simulation

Using the Boundary-layer Equation in 3-dimensional Viscous Flow Simulation PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20

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Using the Boundary-Layer Equations in Three-Dimensional Viscous Flow Simulation

Using the Boundary-Layer Equations in Three-Dimensional Viscous Flow Simulation PDF Author: William R. Van Dalsem
Publisher:
ISBN:
Category :
Languages : en
Pages : 12

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Book Description
A simple and computationally efficient algorithm for solving the unsteady three dimensional boundary layer equations in a time accurate or relaxation mode is presented. The algorithm is used to compute the separated flow over a 6:1 ellipsoid at angle of attack and the transonic flow over a finite wing with shock induced separation. These results are compared to available experimental data. A method of using the boundary-layer algorithm to accelerate a Navier Stokes computation is also presented. Example computations indicate that a boundary-layer algorithm can be used to improve both the accuracy and efficiency of a Navier Stokes algorithm.

Three-Dimensional Attached Viscous Flow

Three-Dimensional Attached Viscous Flow PDF Author: Ernst Heinrich Hirschel
Publisher: Springer Science & Business Media
ISBN: 3642413781
Category : Technology & Engineering
Languages : en
Pages : 396

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Book Description
Viscous flow is treated usually in the frame of boundary-layer theory and as two-dimensional flow. Books on boundary layers give at most the describing equations for three-dimensional boundary layers, and solutions often only for some special cases. This book provides basic principles and theoretical foundations regarding three-dimensional attached viscous flow. Emphasis is put on general three-dimensional attached viscous flows and not on three-dimensional boundary layers. This wider scope is necessary in view of the theoretical and practical problems to be mastered in practice. The topics are weak, strong, and global interaction, the locality principle, properties of three-dimensional viscous flow, thermal surface effects, characteristic properties, wall compatibility conditions, connections between inviscid and viscous flow, flow topology, quasi-one- and two-dimensional flows, laminar-turbulent transition and turbulence. Though the primary flight speed range is that of civil air transport vehicles, flows past other flying vehicles up to hypersonic speeds are also considered. Emphasis is put on general three-dimensional attached viscous flows and not on three-dimensional boundary layers, as this wider scope is necessary in view of the theoretical and practical problems that have to be overcome in practice. The specific topics covered include weak, strong, and global interaction; the locality principle; properties of three-dimensional viscous flows; thermal surface effects; characteristic properties; wall compatibility conditions; connections between inviscid and viscous flows; flow topology; quasi-one- and two-dimensional flows; laminar-turbulent transition; and turbulence. Detailed discussions of examples illustrate these topics and the relevant phenomena encountered in three-dimensional viscous flows. The full governing equations, reference-temperature relations for qualitative considerations and estimations of flow properties, and coordinates for fuselages and wings are also provided. Sample problems with solutions allow readers to test their understanding.

Viscous Flows

Viscous Flows PDF Author: Ahmer Mehmood
Publisher: Springer
ISBN: 3319554328
Category : Technology & Engineering
Languages : en
Pages : 205

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Book Description
This authored monograph provides a detailed discussion of the boundary layer flow due to a moving plate. The topical focus lies on the 2- and 3-dimensional case, considering axially symmetric and unsteady flows. The author derives a criterion for the self-similar and non-similar flow, and the turbulent flow due to a stretching or shrinking sheet is also discussed. The target audience primarily comprises research experts in the field of boundary layer flow, but the book will also be beneficial for graduate students.

Three-dimensional Viscous Flow Computations Using the Integral Boundary Layer Equations Simultaneously Coupled with a Low Order Panel Method

Three-dimensional Viscous Flow Computations Using the Integral Boundary Layer Equations Simultaneously Coupled with a Low Order Panel Method PDF Author: William Michael Milewski
Publisher:
ISBN:
Category :
Languages : en
Pages : 108

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Viscous Flow Applications

Viscous Flow Applications PDF Author: Carlos A. Brebbia
Publisher: Springer Science & Business Media
ISBN: 3642836836
Category : Science
Languages : en
Pages : 195

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Book Description
The Boundary Element Method has now become a powerful tool of engineering analysis and is routinely applied for the solution of elastostatics and potential problems. More recently research has concentrated on solving a large variety of non-linear and time dependent applications and in particular the method has been developed for viscous fluid flow problems. This book presents the state of the art on the solution of viscous flow using boundary elements and discusses different current approaches which have been validated by numerical experiments. . Chapter 1 of the book presents a brief review of previous work on viscous flow simulation and in particular gives an up-to-date list of the most important BEM references in the field. Chapter 2 reviews the governing equations for general viscous flow, including compressibility. The authors present a compre hensive treatment of the different cases and their formulation in terms of boundary integral equations. This work has been the result of collaboration between Computational Mechanics Institute of Southampton and Massa chusetts Institute of Technology researchers. Chapter 3 describes the gen eralized formulation for unsteady viscous flow problems developed over many years at Georgia Institute of Technology. This formulation has been extensively applied to solve aer09ynamic problems.

Three-dimensional Turbulent Boundary Layers

Three-dimensional Turbulent Boundary Layers PDF Author: O. Sendstad
Publisher:
ISBN:
Category : Simulation methods
Languages : en
Pages : 130

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Boundary Elements in Fluid Dynamics

Boundary Elements in Fluid Dynamics PDF Author: C.A. Brebbia
Publisher: Springer Science & Business Media
ISBN: 9401128766
Category : Science
Languages : en
Pages : 264

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Book Description
This book Boundary Elements in Fluid Dynamics is the second volume of the two volume proceedings of the International Conference on Computer Modelling of Seas and Coastal Regions and Boundary Elements and Fluid Dynamics, held in Southampton, U.K., in April 1992. The Boundary Element Method (BEM) is now fully established as an ac curate and successful technique for solving engineering problems in a wide range of fields. The success of the method is due to its advantages in data reduction, as only the boundary of the region is modelled. Thus moving boundaries may be more easily handled, which is not the case if domain methods are used. In addition, the method is easily able to model regions to extending to infinity. Fluid mechanics is traditionally one of the most challenging areas of engi neering, the simulation of fluid motion, particularly in three dimensions, is always a serious test for any numerical method, and is an area in which BEM analysis may be used taking full advantage of its special characteris tics. The conference includes sections on turbomachinery, aerodynamics, viscous flow and turbulence models, and special flow situations. The organisers would like to thank the International Scientific Advisory Committee, the conference delegates and all of those who have actively supported the meet ing.

Modeling and Computation of Boundary-Layer Flows

Modeling and Computation of Boundary-Layer Flows PDF Author: Tuncer Cebeci
Publisher: Springer
ISBN: 9783540650102
Category : Science
Languages : en
Pages : 469

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Book Description
This book is an introduction to computational fluid dynamics with emphasis on the solution of the boundary-layer equations and the modeling and computation of boundary-layer flows. It also provides readers with a good understanding of the basic principles of fluid dynamics and numerical methods. A variety of readers, including undergraduate and graduate students, teachers or scientists working in aerodynamics or hydrodynamics will find the text interesting. The subjects covered in this book include laminar and , turbulent boundary layers and laminar--turbulent transition. The viscous--inviscid coupling between the boundary layer and the inviscid flow is also addressed. Two-dimensional and three-dimensional incompressible flows are considered. Physical and numerical aspects of boundary-layer flows are described in detail in 12 chapters. A large number of homework problems are included.

Intermediate Fluid Mechanics

Intermediate Fluid Mechanics PDF Author: James Liburdy
Publisher:
ISBN: 9781955101103
Category :
Languages : en
Pages :

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