AE 3021 High Speed Aerodynamics

Winter/Spring 2000


NEWS: Last updated Monday March 27 at 3:07 pm
See updated section on Reynolds Averaging for turbulent flows

Catalog Description: AE 3021 High Speed Aerodynamics. 3-0-3. Compressibility effects on airfoil and wing aerodynamics; supersonic potential flow; method of characteristics; boundary layer effects on airfoil and wing performance.
Text: Either Fundamental of Aerodynamics by Anderson or Bertin and Smith, 2nd Edition.  or Anderson, Fundamentals of Aerodynamics. Use texts that you used for Aerodynamics and Gas Dynamics.   Web-based notes (you are here). See Aerospace Digital Library at http://www.adl.gatech.edu

Learning Objectives: Learn to account for compressibility effects, assuming that the incompressible aerodynamic characteristics of airfoils, wings or bodies of revolution are known. Learn to estimate viscous drag characteristics of airfoils and wings in attached turbulent flow. Learn how to model 2-D supersonic flow including nozzle design.

1. Review of Results From Aerodynamics
a. Low speed aerodynamics
b. Gas Dynamics
c. Review of conservation equations

2. Compressible potential flow equation
Full Potential Equation

3. Small-disturbance form of potential equation
Linearized Potential Equation
Linearized Pressure Coefficient
Boundary Conditions
Subsonic Similarity
Airfoils in Supersonic Flow

4. Nonlinear techniques for supersonic flows
Shock-expansion technique
Busemann 2nd-order theory
Sources of  Drag
Drag Coefficient

5. Method of characteristics for supersonic flow.

6. Wings and Bodies in Compressible Flow

7. Transonic aerodynamics
Critical Mach Number
Airfoils in Transonic Flow
Supercritical airfoils
Transonic Drag Rise
Variation of Lift with M
Sweep
Supersonic and Subsonic Leading Edges
Transonic Area Rule

8. Review of boundary layer theory

9. Methods for predicting laminar boundary layer effects

10. Effects of compressibility in boundary layers

11. Transition to turbulence; physics of turbulence

12. Reynolds averaging and models for turbulent stresses

13. Methods for computing turbulent boundary layers.
 

Instructor: Dr. Narayanan M. Komerath, Professor. narayanan.komerath@ae.gatech.edu

Office: 353 Guggenheim or in the wind tunnel, 142 Guggenheim.

Grading:
2 Midterms 40%
Assignments: 30%
Final: 30%
 
 

Policies:

1. Special Winter 8am policy: Regular and punctual attendance is mandatory. Must inform instructor of any absences. But do NOT drive in a hurry to get to class! Wake up early and get moving early instead.

2. No relative grading. "WYEIWYG"

3. Ask anyone for help on assignments, but what you submit for grades must be your own work.

4. Team projects: Grading will be based on both team performance and your role in it.
 
 

Course links index
 
 
 

Title r theta Type Author(s)
Boundary Layers 3 54 9  nk
Introduction to Viscous Flow 2 54 9  ls
Navier-Stokes equations Derivation and Solutions 2 54 1  ls
Derivation of Boundary layer equations 2 54 1  ls
Exact Solutions to the Boundary Layer equations 2 54 1  ls
Boundary Layer Profile 2 54 1  ls
 Thwaites Method 2 54 1  ls
Transition 2 54 1  ls
Fluid Stresses; Stokes Relation; Stokes hypothesis 2 54 1  ls
 Nondimensionalized equations for viscous flow 2 54  1  ls
 Hagen-Poseuille Flow; 
 Axisymmetric laminar fully developed  pipe flow with pressure gradient		 2 54  1  ls
 Prandtl's Boundary Layer Theory  2 54  1  ls
 Exact solutions of N-S eqns' Couette Flow; parallel plates 2  54  1  ls