State University of New York at Buffalo

MAE 422 GAS DYNAMICS Spring 2006


Time and Location:

Lecture: Tu Th, 2:00 3:20 pm 109 Obrian Hall


Mr. James Wulf

325 Jarvis Hall, 645-2593 ext 2318, e-mail:

Office hours: 9:30 12:00 Monday and Friday, 11:00-12:00 Wednesday and by appointment anytime.


Teaching Assistant

Mr. Demissie Wolde-Gabriel, e-mail:

Trailer J

Office hours: 11:30 1:00 Tuesday and Thursday

Text Book: Modern Compressible Flow, third edition

John D. Anderson, McGraw Hill


The course will be taught using both SI and English units.


Homework 10%

Best 4 of 5 quizzes 10%

Design Problems 10%

1st Exam 20%

2nd Exam and Final 25%


Grades will be converted to a T score by the following formula,

T-score = (Exam Score - Class Mean) / Class Standard Deviation




1.2 or higher


1.0 to 1.199


.8 to.999


0.4 to .799


0.2 to .399


0.0 to .199


-.4 to -.001


-.6 to -.399


-.8 to -.599


-1.0 to -.799


-1.0 or less
















The T score will set the minimum grade that can be given. The T score grade can be improved with better grades in the latter part of the course demonstrating a competence in subjects with a poor grade in the first part of the course.


There will be 5 quizzes, two exams and a final. The 5 quizzes will be unannounced. The lowest quiz grade will be excluded. Quiz questions will closely follow homework problems or parts of homework problems. All exams and quizzes are open book, closed notes and closed homework.


A design problems will be assigned. The design problem will be graded according to the results achieved.


Course notes for the coming week will be posed on the course web site on Friday.


Homework is due on Tuesday in class or my office before 4:00 pm. Homework after this time will not be accepted. Homework will not be graded but solutions will be posted on the course web site the day after they are due.


Integrity Policy:

There is nothing more dishonorable for an engineer, short of his work causing loss of life or property, than to present the work of another as his own. This can happen in patent applications, reports, presentations, and technical papers. Dishonesty in course work is the start of this slippery slope that ends in news stories such as we have seen reported last year or worse. Pressure may be felt in school however it is more difficult, not easier, to maintain integrity in practice.


Presenting course work of another as your own will result in a reduction in grade usually to an F.


Course Outline:

Chapter 1 Thermodynamics Review

First Law - energy equation. Second Law- entropy,

isentropic process. Ideal gas law

Chapter 2 Integral Flow Equations

Chapter 3 One-Dimensional Flow

Property equations, Normal Shock

Fanno Flow friction, Reayleigh Flow heat addition

Chapter 4 Oblique Shocks

Reflection, cancellation, interference

Prandtl Meyer Flow

Chapter 6 Differential Flow Equations

Continuity, momentum, energy.

Chapter 5 Quasi-One-Dimensional Flow

Nozzles, Diffusers, Wind Tunnels

Chapter 11 Methods of Characteristics