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Normal shock waves [Aerodynamics #18] 

Prof. Van Buren
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In this lecture, we discuss the basics of shock waves and then focus on the normal shock wave, an idealized 1D case. When you go faster than the speed of sound, pressure disturbances induce shock waves. These are barriers that cause the flow to dramatically change condition, reducing the flow velocity but increasing the pressure, temperature, and density. The temperature and pressure downstream of a shock can get super-high, and that dominates the design and flight profile of high-speed aircraft.
Free downloadable notes (PDF with white background) can be found at my website: sites.udel.edu/vanburen/educa...

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9 июл 2024

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Комментарии : 26   
@ibrahimabudagga7808
@ibrahimabudagga7808 Год назад
One of the best dedicated series for Aerodynamics, the simplest and most thorough explanation. I enjoyed your course a lot. Yours thankfully 🌹.
@prof.vanburen
@prof.vanburen Год назад
Aw thanks!! I'm glad you liked it.
@Srujith111
@Srujith111 6 месяцев назад
I learnt from different sources but no body has ever explained the practical implication for the variables across shock or they explain what characteristic mach and sonic to this depth yet simple terms. Have to say you are the best teacher
@prof.vanburen
@prof.vanburen 6 месяцев назад
Thanks!!
@Josh-st6sx
@Josh-st6sx 7 месяцев назад
I dont usually leave comments but this video is top TIER, I have my gas dynamics final tmm and was hoping to truly grasp the concepts of shocks and this video did it for me. THANK YOU🎉
@prof.vanburen
@prof.vanburen 6 месяцев назад
Thank you so much and I hope your final went well!
@DhakalAmrit
@DhakalAmrit 2 года назад
tomorrow is oral exam of aerodynamics i am using these videos for quick revision, thanks a lot!
@prof.vanburen
@prof.vanburen 2 года назад
Good luck!!
@evertaj2438
@evertaj2438 Год назад
Incredibly helpful. Thank you so much!
@prof.vanburen
@prof.vanburen Год назад
Glad to help!
@gloxe1282
@gloxe1282 Год назад
Thank you Professor, your videos are really helpful!
@prof.vanburen
@prof.vanburen Год назад
Thanks!!
@odysseykarma5499
@odysseykarma5499 2 года назад
sir this was so helpful thank you a lot!
@prof.vanburen
@prof.vanburen 2 года назад
Glad you liked it!
@berkartky3915
@berkartky3915 2 года назад
Thank you kind sir
@prof.vanburen
@prof.vanburen 2 года назад
Thank you!
@mahmoudlotfy7693
@mahmoudlotfy7693 10 месяцев назад
How did we use Bernoulli's equation in normal shocks, which is a basic condition for using it, assuming that the density is constant?
@prof.vanburen
@prof.vanburen 6 месяцев назад
Hi and sorry for the late reply! The semester got a way from me. This is a great comment. I think I am technically wrong for saying it is Bernoulli itself, because it is really just a derivation from a control volume approach of this 1D analysis that spits out an equation *like* the Bernoulli equation. So, great point on your part!
@sohaibumer5950
@sohaibumer5950 8 месяцев назад
😍😍😍😍😍😍😍😍
@prof.vanburen
@prof.vanburen 6 месяцев назад
👍!
@kemalsorucuoglu3689
@kemalsorucuoglu3689 2 месяца назад
önemli hocam
@prof.vanburen
@prof.vanburen 2 месяца назад
Thanks!
@antoniotonisi2419
@antoniotonisi2419 Год назад
Isn't M2=M1 a solution to the equations of conservation of energy, momentum and mass? Why this doesn't happen though?
@prof.vanburen
@prof.vanburen Год назад
Hey! Sorry I'm not sure I understand, why doesn't what happen?
@antoniotonisi2419
@antoniotonisi2419 Год назад
In the normalshock equations, the air could just maintain the same velocity and same proporties and still all equations of conservation of mass, momentum and energy would be met. With that, I meant M1=M2. However, this doesn't happen. The air does change velocity. Why so?
@prof.vanburen
@prof.vanburen Год назад
@@antoniotonisi2419 it's because locally disturbances like pressure fluctuations have nowhere to go, the vehicle is literally going so fast it outruns them. In subsonic flow they move away from the source quickly, but in supersonic flow they build and build. This is partially a reason why the flow just can't stay happy where it is where M1=M2. I'm not sure I helped but I hope so!
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