High Speed Aerodynamics

Garant předmětu:

Lecturer:

Tutor:

Supervisor:

Department of Aerospace Engineering

Synopsis:

High speed aerodynamics is a basic theoretical subject in Aerospace Engineering. The class is intended to familiarize students with the fundamental solution of inviscid and viscous flow cases around aerodynamic profile, and airplane wings at high speed.

Requirements:

Aerodynamics and Mechanics of Flight, Low Speed Aerodynamics

Syllabus of lectures:

1. Compressibility of gases. Character of subsonic, transonic and supersonic flow around bodies.

2. Basic laws of physics describing compressible flow. Fundamentals of gas dynamics.

3. Steady one-dimensional adiabatic flow, adiabatic flow with friction and heat exchange.

4. Flow in nozzles and diffusers with variable cross-section. Formation of shock waves, normal shock wave.

5. Two-dimensional potential compressible fluid flow.

6. Measurement of state variables and flow velocity in compressible fluids.

7. Flow of viscous compressible fluid. Interaction of boundary layer with an external flow and shock wave.

8. Flow around subsonic aerodynamic profile. Critical Mach number. Supercritical profiles.

9. Subsonic flow and aerodynamic characteristics of straight and swept finite span wings.

10. Two-dimensional supersonic flow. Flow around convex and concave edges. Supersonic profiles.

11. Supersonic aerodynamic characteristics of the wing.

12. Transonic phenomena. Aerodynamic characteristics of the profiles, wings and aircraft in the transonic region.

13. Means for reducing the wave crisis.

Syllabus of tutorials:

1. Derivation and use of equations for compressible flow. Dependence of Mach number and velocity parameter. Expression of dimensionless state variables.

2. Compressibility of gases. Pressure disturbance propagation. Aerodynamic heating.

3. Graphical formulation of the Bernoulli integral and critical values of dimensionless variables.

4. Adiabatic, isoentropic flow in a tube of variable cross-section.

5. Compressible fluid flow through nozzles, diffusers and wind tunnel.

6. Shock waves.

7. Pressure conditions in the high speed measurement probes.

8. Changes in entropy and its growth.

9. Speed ratios at incompressible and compressible flow on the profile.

10. Aerodynamic characteristics of a profile in subsonic compressible flow.

11. Critical Mach number.

12. Supersonic flow around convex and concave shapes.

13. Two-dimensional supersonic flow around an aerodynamic profile. Supersonic profiles.

Study Objective:

The aim of the course is to deepen the knowledge at the field of aerodynamics by cases of compressible subsonic, transonic and supersonic flow. Course participants will become familiar with both, the external flow and the flow in channels and nozzles.

Study materials:

-Barnes W., McCormick, Aerodynamics, Aeronautics and Flight Mechanics, John Wiley & Sons, INC.

-John D.Anderson, Jr., Modern Compressible Flow, McGraw-Hill, INC.

-R.W.Fox, A.T.McDonald, P.J.Pritchard, Introduction to Fluid Mechanics, John Wiley & Sons, INC.

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans: