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Two-dimensional Transonic Flow Past Airfoils

Two-dimensional Transonic Flow Past Airfoils PDF Author: Yung-Huai Kuo
Publisher:
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.

Two-dimensional Transonic Flow Past Airfoils

Two-dimensional Transonic Flow Past Airfoils PDF Author: Yung-Huai Kuo
Publisher:
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.

Unsteady Transonic Flow Past Airfoils in Rigid-body Motion. [UFLO5].

Unsteady Transonic Flow Past Airfoils in Rigid-body Motion. [UFLO5]. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description
With the aim of developing a fast and accurate computer code for predicting the aerodynamic forces needed for a flutter analysis, some basic concepts in computational transonics are reviewed. The unsteady transonic flow past airfoils in rigid body motion is adequately described by the potential flow equation as long as the boundary layer remains attached. The two dimensional unsteady transonic potential flow equation in quasilinear form with first order radiation boundary conditions is solved by an alternating direction implicit scheme in an airfoil attached sheared parabolic coordinate system. Numerical experiments show that the scheme is very stable and is able to resolve the higher nonlinear transonic effects for filter analysis within the context of an inviscid theory.

Unsteady Transonic Flow Past Airfoils in Rigid Body Motion

Unsteady Transonic Flow Past Airfoils in Rigid Body Motion PDF Author: I-Chung Chang
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 211

Book Description
With the aim of developing a fast and accurate computer code for predicting the aerodynamic forces needed for a flutter analysis we review some basic concepts in computational transonics. The unsteady transonic flow past airfoils in rigid body motion is adequately described by the potential flow equation as long as the boundary layer remains attached. The two dimensional unsteady transonic potential flow equation in quasilinear form with first order radiation boundary conditions is solved by an alternating direction implicit scheme in an airfoil attached sheared parabolic coordinate system. Numerical experiments show that the scheme is very stable and is able to resolve the highly nonlinear transonic effects for flutter analysis within the context of an inviscid theory. (Author).

Two-dimensional Laminar Incompressible Separated Flow Past Airfoils

Two-dimensional Laminar Incompressible Separated Flow Past Airfoils PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 166

Book Description


Numerical Simulation of Two-dimensional Transonic Flow Over Thin Oscillating Airfoil

Numerical Simulation of Two-dimensional Transonic Flow Over Thin Oscillating Airfoil PDF Author: Karel Kozel
Publisher:
ISBN:
Category :
Languages : en
Pages : 11

Book Description


A Separation Model for Two-Dimensional Airfoils in Transonic Flow

A Separation Model for Two-Dimensional Airfoils in Transonic Flow PDF Author: Frank A. Dvorak
Publisher:
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).

The Practical Application of a Finite Difference Method for Analyzing Transonic Flow Over Oscillating Airfoils and Wings

The Practical Application of a Finite Difference Method for Analyzing Transonic Flow Over Oscillating Airfoils and Wings PDF Author: James D. Sebastian
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 98

Book Description


Wave Propagation in Transonic Flow Past Two-dimensional Aerofoils

Wave Propagation in Transonic Flow Past Two-dimensional Aerofoils PDF Author: B.M. Spee
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description


Experimental Investigation of Transonic Flow Past Two-dimensional Biconvex Circular-arc Airfoils at Small Angles of Attack

Experimental Investigation of Transonic Flow Past Two-dimensional Biconvex Circular-arc Airfoils at Small Angles of Attack PDF Author: Ryuma Kawamura
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description


An Investigation of Several Factors Involved in a Finite Difference Procedure for Analyzing the Transonic Flow about Harmonically Oscillating Airfoils and Wings

An Investigation of Several Factors Involved in a Finite Difference Procedure for Analyzing the Transonic Flow about Harmonically Oscillating Airfoils and Wings PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 96

Book Description