Intro to compressible flow [Aerodynamics #17]

In this lecture, we pivot from incompressible flows and start fresh with compressible flows. Flows become compressible when you either go really fast, or really high up (low density = low speed of sound). Most of the equations we've learned past the conservation laws required incompressible flow, so they are no longer useful in this part of the course. We go over the physical aspects of compressible flow and why the Mach number is so important. Then, we review our conservation equations and refresh some thermodynamics tools that we will use moving forward.

[phantomimmortal]

These have been great to go through!!

A quick typo note: at 16:50 you have s2-s1 = cv ln(T2/T1) - R ln(p2/p1) when I believe it should be s2-s1 = cv ln(T2/T1) + R ln(v2/v1)

[yongjianrong]

The derivation for Mach number gave me a new deep insight into its meaning, thanks!

[andrewbrevick]

I think your videos are great! One comment is that the variables in equations are sometimes small and tough to read, especially with subscripts. One idea might be to write the equations larger initially, and then shrink them down with your tablet software so they fit better with the notes. Thanks for making this content!

[flth]

Explanation at 10:30 is a bit wrong. We are riding on the wave front, fluid on the right seems to move towards us with speed a and on the left, it seems to move away from us with speed a-dv.

[DineshSathambakkam]

Thank you so much for the content, it is very useful.

[mikeshan]

Hello Prof, could you please do a video on derivation of the conservation of energy equation? I can't find any good ones...