Aerodynamic

Arnab Roy

A First Course on Aerodynamics

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2

A First Course on Aerodynamics
© 2012 Arnab Roy & Ventus Publishing ApS
ISBN 978-87-7681-926-2

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3

A First Course on Aerodynamics

Contents

Contents
1

Fundamental Concepts in Aerodynamics and Inviscid Incompressible Flow

6

1.1

Introduction6

1.2

Definition and approach

6

1.3

Fundamental concepts

7

1.4

Governing equations of fluid flow

15

1.5

Thin Airfoil Theory

25

1.6

Finite Wing Theory

28

1.7

Multiple choice questions

31

1.8

Figures

34

2

Fundamentals of Inviscid Compressible Flow

42

2.1

Introduction

42

2.2

One Dimensional Flow Equations:Isentropic flow, stagnation condition, Normal Shock

44

2.3

Quasi One Dimensional Flow: Nozzle and diffuser flow

51

2.4

Oblique shocks and Expansion waves

55

2.5

Linearised Theory: Compressible flow past thin airfoil

58

2.6

Hypersonic flow

61

2.7

Multiple choice questions

62

2.8

Figures

64

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A First Course on Aerodynamics

Contents

3

Fundamentals of Viscous Flow

66

3.1

Introduction

66

3.2

Exact Viscous Flow Solutions

67

3.3

Introduction to Boundary Layer

76

3.4

Multiple Choice Questions

803.5

Figures

82

4

Wind Tunnels and a Few Basic Experiments

84

4.1

Introduction

84

4.2

Low Speed Wind Tunnels

85

4.3

Supersonic Wind Tunnels

88

4.4

Some Basic Experiments in Low Speed Wind Tunnels

90

4.5

Some Basic Experiments in Supersonic Wind Tunnel

92

4.6

Multiple Choice Questions

94

4.7

Figures

95

References96

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A First Course on Aerodynamics

Fundamental Concepts in Aerodynamics

1 Fundamental Concepts in
Aerodynamics and Inviscid
Incompressible Flow
1.1 Introduction
A briefintroduction is provided in this section about Aerodynamics in general. However, the focus is mainly on low speed
flow. Concepts have been introduced without too much rigor. This would hopefully help the reader to get a first glimpse of
the subject without getting into too many details. Figures have been used to explain concepts wherever possible. Lengthy
derivations have been avoided because...