1. AE312 :: Compressible flow Professor D. J. Bodony Spring, 2014 103 Talbot 1:00 - 1:50 p.m., MWF

2. Compressible fluids are everywhere American Scientist

3. Video 1

4. Video 2

5. Video 3

6. In everyday objects... American Scientist

7. In high-speed aircraft...

8. In aircraft gas turbine engines (AE433)... Pratt & Whitney 6000 engine, simulated by Stanford's ASC Center

9. And in not-so everyday objects... SSMESR-71

10. In NASA's Apollo & Orion capsules... Apollo at “hypersonic” speed

11. and in even “slow” objects... At fortissimo, J. Acoust. Soc. Am. 99 (3), March 1996

12. What is this course about? Fluid dynamics of a compressible medium A compressible medium is one in which the density can change. This leads to – steady flow where velocity ~ speed of sound (e.g., high-speed aircraft) – wave propagation (e.g., sound waves, shock waves) – convection driven by body forces with thermal expansion (e.g., rising of hot air) – large scale motion of gases in presence of gravity (e.g., the atmosphere) AE312 AE412

13. What is important in this course? 1. Ability to think

14. What is important in this course? 1. Ability to think 2. Ability to think about compressible fluids

15. What is important in this course? 1. Ability to think 2. Ability to think about compressible fluids 3. Ability to think about compressible media a) classical structures and fluids are part of continuum mechanics b) they both have waves, shocks, etc.

16. What is important in this course? 1. Ability to think 2. Ability to think about compressible fluids 3. Ability to think about compressible media a) classical structures and fluids are part of continuum mechanics b) they both have waves, shocks, etc. 4. Ability to generalize ideas to other areas a) Air traffic control uses governing equations that have their roots in compressible fluids (e.g., Hamilton- Jacobi problems). b) “Shocks” in ATC are bad.