Fluid Mechanics: Dimensional Analysis (23 of 34) 

Respect to such professors,who goes into the reasoning of everything which they teaches instead of solving numericals with clumsy equations.!love from india sir!!

Imagine having a professor as awesome as this guy...

The prof is an absolute god-sent. My prof just rushed through the process and what to do, without once going into "why" we even do this. Props from Germany

I was in a chemical engineering school 5 years ago and trust me, this introduction of dimensional analysic is a masterpiece. Thanks so much for this lecture!

Those 15 minutes in the beginning of the lecture worths millions of dollars. Thanks professor. It would be helpful if those notes are available online

I would never even think about skipping this guys lectures

The amount of clarity from this lecture is simply mind-blowing

Best professor! He is always so happy!

I was rooted to my seat listening to these amazing explanations and helpful tips. I do not think I will ever come across such valuable lessons. Thank you Dr for helping us to learn.

Thank you so much for posting these lectures, what I wouldn't give to be in your class, thank you so much for actually teaching

what a great lecture. Thank you for showing all the cases as well. nicely done as always professor Biddle

I like that, the way of teaching of this professor is amazing and reasonable. I like this video, and I suggest my friends watch this video and gain knowledge.

You're the best Dr Biddle!

What a gem of a teacher!

this guy is the best hands down. He accomplishes what many professors try so hard to accomplish...

This was very helpful. Thank you! Prof is great!

Iam learning FM from you now at 64 and applying in profession thanks professor

I tried watching this to fall asleep, it didn't work. I hope you're proud of yourself. Great teaching, well done.

Amazing lecture

Brilliant lecturer! Really helped me understand the importance of dimensional analysis as well as a method for solving

Waw a nice, energetic,flowfull........lecture million appreciation

Very good class! John Biddle is the man!

Thank you so much Sir. Happy teacher's day everyday💝💖🙏🏻🙏🏻

Hands down the best explanation of the Pi theorem I've seen (though granted, I may have skipped that class or not realized the importance / paid attention back in college). Apparently, nature doesn't care about our arbitrary, man-made units. Thanks so much Professor!

Thank you!!! way better than my lecture

Thanks a lot sir for such beautiful explanation

this guy is fricking awesome, helped me master pi theorem

Great lecture. Respect 👏

Glad the student asked the question about why he didn't choose FD or u as repeating variables. Kudos to you!

This is so great!

Professor Biddle is phenomenal. His teaching makes me more keen in learning fluid mechanics than ever

Thanks a million prof.

Thank you Dr. John Biddle

Thank you so much, Sir!!

Great lecture! thanks!

Excellent

Thanks Professor

God bless you!

powerful Prof

Things that I can't understand in my class, this professor explained perfectly. I wish I can attend his class in real life. Why did I just figure out this channel?

Great great great great great great great great great Thank you Dr so much

I would buy a ticket for this lecture ❤️

Oh boy this was fun...dimensional analysis is cool man😆

Thank you very much, I’m from Iraq 🇮🇶 .

interesting video very good work

Why I don't have a teacher like this guy?

nice! is it me or does the professor start to pick up the pace as the series goes on lol. I admit I was kinda confused in chapter 5, 6 or so when he was staring at the paper half the time. But Chapter 7, 8 beyond the clarity is amazing. ty!

Beauuuuuuuuutiful

Given the roughness, is it possible to solve the problem using only 2 pi? The roughness would be a repeating variable.

Is that U* called U+? Afaik U* is friction velocity and it isn't dimensionless. I'm slightly confused or maybe he's just using a different notation.

Could anyone walk me through how to do this for Mach number in a turbo machine? I am so lost in my thermo class trying to use this method.

John Biddle where have you been all my life? 🤔 I have watched countless engineering related videos and just happened to stumble into this one. 🥳 Thank you very much and is there a text book? PS our engineers pick up the phone and talk to sales people. Sometimes it even works. 🤣

Why length of the cylinder is not considered as a variable? or why drag force is not a function of length of cylinder?

How to calculate the yield theoretically?

Thank you for the lecture! I am wondering how to determine the very first step. how to determine FD is a function of D V rho and miu. if we are in the process of research, we don't know what really matters to this force. maybe we can list few, but i am not sure if we can list all. Does this method works if I miss one of the parameter, for example, I didn't recognize miu. so FD is just a function of DV rho. or someone also mention T, if T is part of the FD function, what then? does this method work in an uncertain condition? or maybe the graph we plot at the end will tell if we found all and reasonable correct parameter? Thank you!

my question is, why did we use the radius as a variable instead of the length of the cylinder? could we have used either?

sir repeating variable how can be identified

let apologize on behalf of those 4 people who dislike this video ..they have an hearing problem

What book are they using?

Very learned professor. Thanks from India. Amazing job. BTW can u also upload videos of subjects like i.c engines power plant engineering and refrigeration and air conditioning etc. It will be of great help. Thanks again

Good professors such as John Biddle make you feel like they are talking to you; bad professors make you feel like they are talking to themselves.

tywin lannister teaching fluid mechanics.

pi should be dimensionless but in the last example the pi the you find is v/hu which is not dimensionless.

As they say in Arabic عظيم عظيم ورائع meaning great great and great

My only question is why did you select 3 dimensionless parameters instead of 4. I know you have two pi terms and add on the remaining parameters but there is no mention of how many you should select. Just that they need to have m,L, and t.

is it mean that we have to have minimal 2 pi formula ?

WHY DID SIR, CHOSE ONLY THREE REAPEATING VARIABLES ?

Professor, you sounded breathless in this lecture. With all due respect, have you gotten a physical recently?

فهمت ٣ اشياء ١. I ٢. الثلاثة أشياء اللي غالبا نتخارها ٣. نقدر نتأكد اذا صح حلنا او لا

you can pass with an A wih a proffessor like him

He's a god 😪

the 4 people who disliked go to cal state death valley

DOCTOR BIDDLE

why are we learning this in fluid 1 -_-

I am really very thankful to the PROFESSOR , and the TEAM that turned it to us !! SUCH PROFESSORS are very rare from where i belong !! I WISH I COULD NURTURE MY SELF IN SUCH ENVIRONMENT CREATED BY TEACHERS LIKE YOU !!!