2017-2018 SPRING SEMESTER

AE 342

AERODYNAMICS II

Instructor: Assoc.Prof.Dr. D. Funda Kurtuluş (Room: 101, Tel: 210 42 91, Email: dfunda@ae.metu.edu.tr)

Course Hours: Monday 13:40-15:30, Friday 13:40-14:30 (Sec 1) (Lectures); Room AE-AUD

Thursday 13:40-15:30, Friday 14:40-15:30 (Sec 2) (Lectures); Room AE-AUD

Lab hours: Wednesday, Thursday and Friday 15:30-17:00

Description:

Compressible flow of air, governing equations for compressible inviscid flow, normal and oblique shock waves, Prandtl Meyer expansion wave, Linearized theory. Viscous flow of air, Navier-Stokes equations, Boundary layer simplifications, 2D boundary layers, similarity solutions, Blassius solution, integral methods, effects of pressure gradient, laminar and turbulent flow, transition and turbulence, law of the wall. Separation and stall, boundary layers on airfoils.

Prerequisite:AE 341 or consent of the department.

Textbook:

· Anderson J. D., Fundamentals of Aerodynamics, 4^th edition, McGraw-Hill Book Company, 2007

Reference Books:

· Kuethe, Arnold, and Chuen-Yen Chow. Foundation of Aerodynamics. 5th ed. New York, NY: John Wiley and Sons, 1997. ISBN: 0471129194.

· Bertin, John J. Aerodynamics for Engineers. 4th ed. Upper Saddle River, NJ: Prentice Hall, 2001. ISBN: 0130646334

· Moran, Jack. An Introduction to Theoretical and Computational Aerodynamics. 1st ed. New York, NY: John Wiley and Sons, 2003. ISBN: 0486428796.

· Fox R.F, McDonald A.T. , Pritchard P. J., Mitchell J. W., Fluid Mechanics, John Wiley & Sons, 9^th edition, 2016.

· Douglas J. F., Gasiorek J. M, Swaffield J. A., Jack L. B., Fluid Mechanics, Prentice Hall, 6^th edition, 2011.

· Anderson, John D. , A History of Aerodynamics, Cambridge University Press, 2001

https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-100-aerodynamics-fall-2005/lecture-notes/

Grading:

1^st Midterm Exam 23 March 2018 Friday @ 17:40

2^nd Midterm Exam 20 April 2018 Friday @ 17:40

Final

Labs/Lab Reports

Lab days (could be changed):

1^st lab: 7-8-9 March 2018; 2^nd lab: 28-29-30 March 2018; 3^rd lab: 11-12-13 April 2018; 4^th lab: 2-3-4 May 2018; 5^th lab: 16-17-18 May 2018)

Recitation days (could be changed):

1^st recitation: 16 March 2018 ; 2^nd recitation: 13 April 2018; 3^rd recitation: 11 May 2018

Course Outline:

1. Introduction to Compressible Aerodynamics (1 week)

2. Steady one dimensional compressible flow (1 week)

3. Quasi one dimensional flow (1 week)

4. Subsonic compressible flow over airfoils (2 weeks)

5. Linearized supersonic flow (1 week)

6. Introduction to viscous flow (1 week)

7. Governing Equations for Boundary Layer Flow (2 weeks)

8. Transition to Turbulent Flow (2 weeks)

9. Introduction to Turbulent Boundary Layer (2 weeks)

10. Calculation of airfoil lift and drag with viscous-inviscid coupling (1 week)

Course policies:

a) Make-ups:

• Make-up exams will be given if you were ill at the date of the exam and you provide a doctor's report from medical center of METU. You should give the original medical report to the Secreteriat of the Aerospace Engineering Department. A photocopy of the medical report should be given to Dr. Kurtulus maximum 1 week after the exam. Otherwise, there will be a loss of points from the exam grade due to late information.
• The only other excuse to enter make-up exam is to have a second exam of another course that you are taking from METU at the time of the AE 342 exam. In this case, you should bring a Petition Letter signed by the instructor of this second course.
• Only one make-up exam will be given after the final exam and the make-up exam will cover all the topics.

b) Laboratories:

Laboratories will be announced from the webpage. Please read laboratory documents before coming to the lab.

• You should arrange the lab hour at the beginning of the class such that all your group members could attend the lab at the same time. Lab groups will be maximum 3 students.
• Your each previous year’s lab report could be counted if it is above the threshold of 70. In this case you do not need to attend this lab session but you will be responsible about the concept in the exams.
• If you do not attend the lab for any kind of excuse you cannot submit the Lab Report.
• All the lab reports are due to the following week Friday until 16:30. No late submission will be accepted.
• The hardcopy of the lab reports should be given to the assistant of the course (softcopies or emails will not be accepted for any kind of excuse).
• If you have any kind of excuse to attend the lab at your specific lab hour, you should emphasis this to the assistant of the course who will give the lab lecture minimum 2 hours before your normally scheduled lab hour or lab hour that you must attend due to your excuse. ONLY in this case, you are allowed to enter to the other sections’ lab hour.

c) Formula Sheets:

You will enter to the Exams with only 1 page (both sides can be used) formula sheet written by your handwriting. The formula sheets will be collected at the end of the exams.

• No photocopies and/or computer printouts will be accepted. There should be no any COMMENTS, units, definitions, explanations, titles, FIGURES on the formula sheets. Only formulas should be written. Otherwise, your formula sheets will be collected by the assistants BEFORE the exams. Please learn that density for air is r=1.225 kg/m³, atmospheric pressure is 101325 Pa at standard air condition and gas constant is R=287 J/kg.K for air. It is not allowed to write these kind of informations on formula sheet. In the case that there are explanations, texts other than formula in your formula sheet and if your handwriting is not clear you will lose minimum 10 points out of 100 from exam grades.
• You cannot have formula sheet of another student during the exam. Prepare your own formula sheet covering all topics.
• Please do not forget to bring a calculator to the exams.
• You are RESPONSIBLE about the equations that you have written to the formula sheet. NO ANY ADDITIONAL EQUATION will be given to you if you forget to write a formula on your formula sheet.

Academic Honesty:

The METU Honour Code is as follows: "Every member of METU community adopts the following honour code as one of the core principles of academic life and strives to develop an academic environment where continuous adherence to this code is promoted. The members of the METU community are reliable, responsible and honourable people who embrace only the success and recognition they deserve, and act with integrity in their use, evaluation and presentation of facts, data and documents."