AERONAUTICAL ENGINEERING


COMPRESSIBLE FLOW AERODYNAMICS

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UNIT-I       COMPRESSIBLE FLOW CONCEPTS                                    

Compressibility -Continuity, Momentum, Energy and state equations, Velocity of sound, realms of fluid motion, physical differences between incompressible, subsonic and supersonic flow, Karman’s rules of supersonic flow, Mach number and Mach angle, Classifications of compressible flow, Characteristic Mach number


UNIT-II     ONE DIMENSIONAL FLOW 


Isentropic flow, Area-velocity relation, Area -Mach number relation, Flow through convergent- divergent passage, Performance under various back pressures. Normal shock relations, Prandtl’s relation, Hugoniot equation, Rayleigh Supersonic Pitot tubeequation,Fanno flow and Rayleigh flow


UNIT-III TWO - DIMENSIONAL WAVES                                                      

Oblique shock relations, relation, Shock Polar, Reflection of oblique shocks, left running and right running waves, Interaction of oblique shock waves, slip line, shock-boundary layer interaction, transonic lambda shock, compression corner effect, incident shock interaction Shock Diamonds, Expansion waves, Prandtl-Meyer expansion, Maximum turning angle, Simple and non-simple regions- Shock-Expansion theory

UNIT-IV DIFFERENTIAL EQUATIONS OF MOTION FOR STEADYCOMPRESSIBLE FLOWS                                                                    

Velocity potential equation-Small perturbation potential theory, Linearized Pressure Coefficient, Prandtl-Glauert Compressibility correction, Improved compressibility correction, Linearized two dimensional supersonic flow theory, Method of Characteristics,2-D supersonic nozzle design

 

UNIT-V HIGH SPEED FLOW OVER AIRFOILS, WINGS AND AIRPLANE  CONFIGURATIONS        

                                                                                 

Critical Mach number, Drag divergence Mach number, Shock Stall, Supercritical Airfoil Sections, Transonic area rule, swept wing, Airfoils for supersonic flows, Lift, drag, pitching moment and Centre of pressure for supersonic profiles, wave drag, supersonic wings, Design considerations for supersonic aircraft- aerodynamic heating