Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Book Description
Two-dimensional Laminar Incompressible Separated Flow Past Airfoils
Author: Two-Dimensional Separated Flows
Author: S. M. BelotserkovskyPublisher: CRC Press
ISBN: 9780849393068
Category : Technology & Engineering
Languages : en
Pages : 322
Book Description
Two-Dimensional Separated Flows provides a systematic presentation of the theory of separated flow around bodies. The main classes of aerodynamic problems of plane-parallel flow around bodies are described, and the steady aerodynamic, unsteady aerodynamic, and statistical characteristics of a trailing wake are determined. Numerical methods based on the synthesis of models for non-viscous incompressible flow and boundary layer, algorithms, examples, and systematic comparisons are presented. The book also includes numerical results for the problem of separated flow around fixed, oscillating, and rotating cylinders, in addition to results for separated flow around an aerofoil over a wide range of angles. Two-Dimensional Separated Flows will benefit researchers and students studying aerodynamics, aircraft dynamics, aeroelasticity, and the aerodynamics of building structures.
Separation of Flow
Author: Paul K. ChangPublisher: Elsevier
ISBN: 1483181286
Category : Technology & Engineering
Languages : en
Pages : 800
Book Description
Interdisciplinary and Advanced Topics in Science and Engineering, Volume 3: Separation of Flow presents the problem of the separation of fluid flow. This book provides information covering the fields of basic physical processes, analyses, and experiments concerning flow separation. Organized into 12 chapters, this volume begins with an overview of the flow separation on the body surface as discusses in various classical examples. This text then examines the analytical and experimental results of the laminar boundary layer of steady, two-dimensional flows in the subsonic speed range. Other chapters consider the study of flow separation on the two-dimensional body, flow separation on three-dimensional body shape and particularly on bodies of revolution. This book discusses as well the analytical solutions of the unsteady flow separation. The final chapter deals with the purpose of separation flow control to raise efficiency or to enhance the performance of vehicles and fluid machineries involving various engineering applications. This book is a valuable resource for engineers.
Two-dimensional Transonic Flow Past Airfoils
Author: Yung-Huai KuoPublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 54
Book Description
The problem of constructing solutions for transonic flow over symmetric airfoils is treated for simplification of the mapping of the incompressible flow is emphasized. In the case of a symmetric Joukowski airfoil without circulation the mapping is relatively simple, but the coefficients in the power series are difficult to evaluate. As a means of simplification an approximate flow is used which differs only slightly from the exact incompressible one when the thickness is small. Flow with circulation is also considered by the same method.
A Simplified Model of the Incompressible Flow Past Two-dimensional Aerofoils with a Long Bubble Type of Flow Separation
Author: J.F. NorburyLaminar Flow Aircraft Certification
Author: The Numerical Solution of Incompressible Turbulent Flow Over Airfoils
Author: Harwood Allan HegnaPublisher:
ISBN:
Category : Aerofoils
Languages : en
Pages : 171
Book Description
Numerical solutions are obtained for two-dimensional incompressible turbulent viscous flow over airfoils of arbitrary geometry. A body-fitted coordinate system is numerically transformed to a rectangular grid in the computational plane. The time dependent Reynolds averaged Navier-Stokes equations in the primitive variables of velocity and pressure are used. Turbulence is modelled with an algebraic eddy viscosity technique modified for separated adverse pressure gradient flows. The set of transformed partial differential equations is solved with an implicit finite difference method. Numerical solutions for a NACA 0012 airfoil near stall at a chord Reynolds number of 170,000 are favorably compared with surface pressure and velocity field measurements. A small laminar separation bubble near the suction pressure peak is observed. Computed lift and drag coefficients agree well with experimental values. (Author).
A Separation Model for Two-Dimensional Airfoils in Transonic Flow
Author: Frank A. DvorakPublisher:
ISBN:
Category :
Languages : en
Pages : 41
Book Description
A calculation method for transonic separated flow about two-dimensional airfoils at incidence is presented in this report. The method is capable of predicting the effects of both leading- and trailing-edge separated flows, although the former is usually associated with a complete collapse of the airfoil flow field, in which case the flow is no longer supercritical. A viscous potential flow iteration procedure provides the connection between potential flow, boundary layer and wake modules. The separated wake is modelled in the potential flow analysis by thin sheets across which exists a jump in velocity potential. These sheets are analogous to vorticity sheets in incompressible flow. The basic potential flow method is a modification of Jameson's full potential method. Calculations for four different airfoils have been compared with experiment for pressure distributions as well as integrated forces. The agreement between theory and experiment is generally good even when shock waves are present. (Author).
Theoretical Two-dimensional Airfoil Analysis in Non-viscous Incompressible Flow
Author: Douglas Aircraft CompanyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This reference report is a summary of several methods available for the determination of the incompressible non-viscous flow around a two-dimensional airfoil. The object is to present the methods in a simple, unified manner that can be easily understood by the average engineer. Examples of the calculation procedures are given. The methods described may be used to determine the velocity distribution around an arbitrary airfoil, the velocity field around an arbitrary airfoil, the airfoil shape required for a desired velocity distribution, and velocity distribution changes due to small changes on an airfoil.
Control of Flow Separation
Author: Paul K. ChangPublisher: Hemisphere Pub
ISBN:
Category : Science
Languages : en
Pages : 556
Book Description