Kutta Joukowski theorem [Aerodynamics #10]

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In this lecture, we formally introduce the Kutta-Joukowski theorem. This is a powerful equation in aerodynamics that can get you the lift on a body from the flow circulation, density, and velocity. By taking a deep-dive into the rotating cylinder elementary flow, we derive the Kutta-Joukowski theorem through example.
Free downloadable notes (PDF with white background) can be found at my website: sites.udel.edu/vanburen/educa...

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16 фев 2021

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Комментарии : 59

@kathrynslavny763 Год назад

your a better teacher than my own aerodynamics teacher that gets paid to teach me. It’s amazing that a free source like youtube videos can be more helpful than my expensive classes I pay for in college

@prof.vanburen Год назад

Aw! I'm glad you find it helpful and good luck with your classes

@jafinhasanomar1037 6 месяцев назад

I'm from Bangladesh & the story is the same. Where are you from?

@alanj.walker7747 2 года назад

What a masterpiece! What a masterpiece! By every passing minute, I simply can't hold my urge to write this comment!!! This video is a master piece and Prof. Buren, you are an amazing, passionate and exceptionally good at delivering stuff like this! Amazing! I'm just blushing, the way this is explained so smoothly, crazy!

@prof.vanburen 2 года назад

Thanks for the kind words Alan! I am glad you like it.

@jaxonterrace8263 2 года назад

Wtf

@Mechanica55 Год назад

@@prof.vanburen I bet your mum wrote that.

@prof.vanburen Год назад

@@Mechanica55 media.giphy.com/media/CE253lLSLlL68/giphy.gif

@bristyhaque2131 2 года назад

After completing the whole playlist of Aerodynamics , I just wanted to say "Thank You, Professor.Thank you so much!" . You're amazing , Sir..

@prof.vanburen 2 года назад

Thank you and glad you liked the material!

@wffff2 Год назад

Especially like how you explain the causality of the lift and circulation at the end. The analogy between lift's circulation and pedestrian's footprint really helps clarify. Thanks a lot.

@prof.vanburen Год назад

Thanks, I'm glad you liked that part!

@willm6598 2 года назад

This is literally saving me in the class I am in, I am so grateful for these videos. This is the part of the book I just didn't understand, and the way you explain it is one million times better than the way the book teaches it. Thank you so much, I hope you keep making for videos!

@prof.vanburen 2 года назад

Good luck with class!

@abhinandok190 Год назад

Thanks Professor, Really amazed.. The efforts you put to make these video is really incredible.. you made my advanced fluid mechanics classes super easier 🙏🙏

@prof.vanburen Год назад

Thank you and good luck in advanced fluids!

@uxieitachi6270 2 года назад

U made things look so simple

@prof.vanburen 2 года назад

Thanks!

@norwaydude96 3 года назад

thanks - helpful for my hydrodynamics class :)

@prof.vanburen 3 года назад

Happy to help!

@omido6604 2 года назад

LOOOOVE IT!!!

@prof.vanburen 2 года назад

Nice!

@NehaYadav-jf2ss 3 года назад

The method used by you is amazing! It was so engaging and it helped in clearing my basics. Can you make a video on how to choose an airfoil for a fixed-wing UAV, design and things we need to keep in mind?

@prof.vanburen 3 года назад

That's a good idea, there's so much that goes into choosing the right airfoil. In a UAV application, it depends on what you want - max lift, min drag, max lift/drag ratio, max performance range (UAVs can be small and experience gusts, so a wide range of velocities/angles in a single flight). Once you have an idea of what you want to optimize for, you find your expected Reynolds number then start exploring existing airfoils (something like airfoiltools.com is good here) or optimize design your own!

@NehaYadav-jf2ss 3 года назад

@@prof.vanburen yeah, I've used that too. I'm doing calculation for eVTOL fixed wing from scratch. Initially I faced problems with the approach that is why I wanted some help. I've read research papers related to that, but I'm looking for someone like you. The way you simplify things, it is a sign of excellent teaching and conceptual understanding. If possible please make a video on that. It'll be a huge help. Thank you!

@kelpilot 3 года назад

It was so useful, I was wondering how can we use circulation method to find lift? Because it isn't spinning. Then I finally found this video and there are no more question. Thanks a lot...

@prof.vanburen 3 года назад

Glad you like it!!

@david_porthouse Год назад

When a cylinder starts to rotate clockwise, it is surrounded by anti-clockwise vorticity in a boundary layer. As this layer thickens up under the action of viscosity, it is convected away by any crossflow. This leaves the cylinder as a naked vortex which then produces a transverse force.

@prof.vanburen Год назад

Yep!

@emanalihashem2915 2 года назад

Thank you sir

@prof.vanburen 2 года назад

No problem!

@doguskutay 10 месяцев назад

Thanks.

@prof.vanburen 6 месяцев назад

No problem!

@franchino4895 Месяц назад

Can you help me to understand why at 8:13 we have Cd equal to 2 integrals one positive and one negative, and then at 9:10 Cd became a unique integral with minus sign? I do not understand the minus sign. The same happen for Cl.

@phantomimmortal9962 6 месяцев назад

Thank you very much for providing these, they're incredibly helpful. Around 10:00-11:00 when we're plugging in cp(theta) and integrating, it looks like a number of the signs are flipped from how you had them written at 8:44. All the terms go to 0 so it doesn't ultimately affect things, but is that just a typo or did I miss something?

@prof.vanburen 6 месяцев назад

Thanks for pointing this out! It certainly seems like it could be a sign slip-up, so you're probably right. My students are constantly pointing out typos in my notes, I guess it would be no different in the online videos either. Thanks for your attention to detail and I'm glad you are finding the videos helpful!

@sasa_codm 3 месяца назад

you are insane !!

@prof.vanburen 3 месяца назад

Thanks, I think!

@aeroada Год назад

thank you very much. Anderson's book explanation was not clear, but your lecture was an enlightenment ^_^

@prof.vanburen Год назад

Ah thanks! I really appreciate the kind words.

@vidhimittal513 3 года назад

Sir your classes were really good can you please whole syllabus of aerodynamics for aeroplane engineers

@prof.vanburen 3 года назад

Thanks! You want my aero class syllabus? Shoot me an email with what you're looking for at vanburenlabs@gmail.com

@smilemehta5378 3 года назад

Hii vidhi😂

@vidhimittal513 3 года назад

@@prof.vanburen ok

@harisheswar6319 3 года назад

Sir can you please take classes on cfd

@prof.vanburen 3 года назад

I wish I knew more about CFD! Definitely in the future I can get some more detailed CFD info up, unfortunately there are so many types of solvers and flow situations it's very difficult to teach generally. I give a brief overview of CFD in my Fluid Mechanics playlist series.

@AadarshPandeyop Год назад

Hope this helps on my project proposal:)

@prof.vanburen Год назад

Me too! Best of luck.

@AadarshPandeyop Год назад

@@prof.vanburen it helped tysm

@xmnemonic Год назад

Neetcode of aerodynamics

@prof.vanburen Год назад

Oh @NeetCode 's stuff looks awesome, thank you!

@hakeemcanonio3840 2 года назад

12:43 Very important

@prof.vanburen 2 года назад

I think so!

@nadiachaoui9176 Год назад

if cpu =cpl than why cl not = 0 ?

@prof.vanburen Год назад

Hard to answer based on this, where in the video are you referring to?

@amanaryan4667 2 года назад

sir please use white board as the background.

@prof.vanburen Год назад

I have always preferred black, it saves the screen/battery/eyes. However, my website has the notes in a white background if you find that helpful for reading/printing: sites.udel.edu/vanburen/education