Aerodynamic notes

Aerodynamic II

Aerodynamics, from Greek ἀήρ aer (air) + δυναμική (dynamics), is the study of motion of air, particularly as interaction with a solid object, such as an airplanewing. It is a sub-field of fluid dynamics and gas dynamics, and many aspects of aerodynamics theory are common to these fields. The term aerodynamicsis often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891.^[1] Since then, the use of aerodynamics through mathematicalanalysis, empirical approximations, wind tunnelexperimentation, and computer simulations has formed a rational basis for the development of heavier-than-air flight and a number of other technologies. Recent work in aerodynamics has focused on issues related to compressible flow, turbulence, and boundary layers and has become increasingly computational in nature.

  AERODYNAMIC II NOTES

AERODYNAMIC II AT A GLANCE

• Lecture notes ktu
• Exam point of view
• Topics covered

Shock polar

Oblique shock solution

Intro to oblique shock

Pressure deflection curve

Mach reflection

Raleigh curve

Fanno curve

Maximum turning angle

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KTU NOTES & SULABYS

MODULE 1 lecture notes

Compressible, Continuity, Momentum and energy equations for steady one dimensional flow, 

Compressible Bernoulli’s equation velocity relation, Mach cone, Mach angle, 

Operating characteristics of nozzles- introduction to hypersonic  flows. 
Derivations and explanations 

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MODULE 2 LECTURE NOTES

Normal shock relations, Prandtl’s relation, Hugoniot equation ,

Rayleigh Supersonic Pitot tube equation, Moving normal 

shock waves. 
Area- Mach number relation

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MODULE 3 & 4 LECTURE NOTES

Interaction of oblique shock waves, introduction to slip line,
 Introduction to boundary layer interaction,
 compression corner effect – incident shock interaction. 

Rayleigh flow, Fanno flow (simple numerical examples)
 Expansion waves, Prandtl-Meyer expansion,
 Maximum turning angle,
 Simple and non-simple regions.

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SHOCK POLAR NOTES 
The term shock polar is generally used with the graphical

 representation of the Rankine-Hugoniot equations in either 

the hodograph plane or the pressure ratio-flow deflection

 angle plane. The polar itself is the locus of all possible

 states after an oblique shock.
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