Stress, Strain & Quicksand: Crash Course Engineering #12
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- Today we’re talking all about fluid mechanics! We’ll look at different scales that we work with as engineers, mass and energy transfers, the no-slip condition, stress and strain, Newton’s law of viscosity, Reynold’s number, and more!
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This looks so simple, but oh boy, when you go deep into it...
LMAOOO
Trying to learn it for personal projects. Just gotta keep moving no matter how hard it gets.
I feel like stress and strain need a few episodes each. This stuff is so, so important.
I’m taking fluid mechanics during the spring semester and I’m so pumped for it. Lol pun not intended.
It’s fun and games until you hit navier-stokes
I'm starting my fall semester in 10 days and I'm taking fluid mechanics too. thank you so much I'm actually excited to learn about fluids now lol
good luck!
If you haven't already, I'd recommend you watch some lectures from Ron Hugo or Michel Van Biezen to prepare yourself. I took Fluids last spring and barely got away with my sanity and a high B. Best of luck to you!
Is is not the easiest stuff to calculate. But Thermal Dynamics and Fluid Dynamics is so much fun. I loved it. And I yous it all the time, even though it is not my work.
*The Bernoulli equation. Learn it. Now.*
Good luck! I always enjoyed fluid dynamics classes, it goes quick I promise 😊
In microfluidics, the flow is always laminar because the diameter is tiny (less than a millimeter), so when you pump in two different fluids, they don't mix easily. If you look up "microfluidic chip", you'll see that most of them have a zig-zag shape. That increases the length of the channel so the fluids can diffuse into each other and mix evenly along the way (although there are other reasons why you would want to make the channel longer).
Best CrashCourse ever... EVER!!!!
I love it...
I think it is easier to understand stress and strain in the context of beam theory. And then defined a fluid as a solid not able to carry stress in tension. But this works too...
I am looking forward to the FE and CFD videos it is going to be amassing.
I am taking Fluid Dynamics next Semester for my Engineering Studies. Thanks for the first insight, Shini & CC-Team :)
How did it go?
You can either watch these videos for overview skim which actually makes your sch/uni/coll lesson easier or you have already learnt these at sch/uni/coll then come and watch for better understanding. Both actually worked. I have already tried with chemistry, physics, biology, anatomy and physiology.
I'm taking biomedical transport phenomenon and it is basically fluid dynamics.. I can assure you all it is not fun. Thanks crash course for breaking this down for others.
Normally I find the host speaks a little fast for me, but this ep was perfect. As always, full of great info.
Great video, thank you. Just a small point I think might need correcting: In the diagram accompanying the normal strain equation, I think the subscript of the total length (on the top) should be T for total. This would differentiate it from the shear strain LF.
We did this in a level physics I love it :)
My first time watching- thank you, crash course, for giving a platform to a woman of color in STEM. You’re being the change we need in the world.
she had a great series on Physics as well. She's not just a WOC, she's an incredible teacher
Nick C pretty bloody patronizing! You should check your privilege!
I learned more in this video than in half of my lectures on fluids mechanics
Ansys Fluent CFD is an interesting and helpful program for fluid mechanics/dynamics. Kind of wish they would talk about problems like cavitation or water hammer/hydraulic shock, unless that is in the next part...
I had take the video 2x slower to make listening optimal since the delivery is very fluid.
OMG where were you this year when I failed my exam on rheology?!
I'd like to traslate these amazing series into Spanish since It's my mother tongue and I am really sure that some people around me or just that don't speak English would find them so helpful and interesting. Would it be possible drop the link here for that porpouse?
could you help me a two question i need to understand them..
1)
Water flows through a pipe 4cm in diameter and 38m long between two tanks with square edged non projecting entrance and exit. The flow rate is controlled by a gate valve which when fully open has a loss factor of 0.32. What is the height difference between the tanks if the volume flow rate is 3.8 x10-3 m3/s.
For laminar flow f=16/Re
For turbulent flow f=0.08/Re0.25
Density of water,
ρ
, is 1000kg/m3, viscosity of water,
μ
, is 0.001Pa.s.
2)
The viscous torque produced on a disc rotating in a liquid depends upon the diameter D, the speed of rotation N, the density
ρ
and the viscosity
μ
. The equation taking the form:-
T = ρ N 2 D 5 φ ( ρ N D 2 μ )
In order to predict the torque on a 1.8 diameter disc rotating in water of density 1000kg/m3 at 129 rev/min a model is built to a scale of 1/4. The model is rotated in oil. Calculate the speed of rotation, in rev/min, for the model to produce dynamic similarity.
The oil density is 785 kg/m3 and the dynamic viscosity of the oil is 4.7 x 10-4Pa.s.
The water dynamic viscosity is 1 x 10-3Pa.s.
thanks
You can work and research fluid mechanics (more deeply) following the career of Chemical or Mechanical Engineering.
CrashCourse, Are you able to make your content available on podcasts? I would love to listen to your videos while I work
Download the videos
download as mp3
Can you guys make a linguistics course?
Flaming Basketball Club thanks,hope so
My new favorite teacher😍
5:07 Osborn Reynolds should be the name of some superhero from MCU
In the UK we don't graduate from college, we graduate from university. College is like an alternative for school, for A-Levels and other qualifications before you'd go to uni :P Must have felt weird for Dr. Shini to say that :P
Definitely needed this XD
Great episode, as always.
WHY DIDNT YOU GUYS MAKE ENGINEERING SOONER!!! ANYWAYS THANK YOU FOR THIS
How does the fluid(s) tendency changes in coating proccess of Poly films and membranes?
Rho V D by Mu... why did you remind me??
now the nightmares will come back gain ;(
Me, an almost *7th* grader: Mmhmmm yep. I actually understand some of this. This is actually pretty interesting.
Jane Redden that's pretty cool. We are living proof that science is for all ages.
im almost born
I am a blastocyst.
im -1/12
I am almost a 27th grader
shini's favourite episode
i love this!! this really interests me!!
Hi this year I am taking physics 1 which textbook to buy would you recommend
Wish this video comes out sooner
Quick sand is dilatent or pseudo plastic?
So that's turbulent and laminar flow. In-between is transitional flow, but don't worry about that, moving on
Great video!
we live in a society
Pixar Filmz NiceMeMe
@@bob-jones Thank you, Bob.
Can anyone help me. I want to further my education and become an engineer preferably starting in mechanical engineering and i have no idea what to do
Thank you! This helped me study for my English 12 B exam.
That's David Tennant in the animations.
Thanks
meaning that as the bottom plate is moving minuscule friction is transferred through the Air from the statistics nary plate to the moving one
Meaning that fluids can transfer friction from one object to another
cralix thegameking , sure,..have you ever heard of "wind burn"?
haha i love being forced to watch these and pretent i managed to learn anything
HER: " YOU THOUGHT I WAS GONNA SAY PARALLEL STRESS, DIDNT YOU? "
ME: " YES I DID BABY... YES I DID "
Shouldn't that video be in crash course physical chemistry?
So Pressure is a measurement/type of Stress. Right?
Pressure is just a force spread out over a surface area.
Pressure is a normal stress, yes.
shes explaining this fairly well, yet i still dont get a word she's saying, both because im american and i dont fully understand her accent and because i am an idiot.
Wow 8 000 000 subs
Make more vids on engineering
4:20 that Engineato sounds kind of dirty lol
Sorry to anyone who has to take this class. I’ve already done so.
Hi there. So what is your result? Did you pass the course. Im going to take this class so Im a little bit cocerned . :)
Phát Phạm Hồng not hard until you begin learning about boundary layers and invicid fluids.
Thanks a lot XD . I'll keep that in mind.
Interesting
Engineato! Meaning PLEASE??
“Lit” as the kids would say!
Is pressure and stress the same thing? Their formula is same
Both of them exists at the same place. But the phenomenon is completely different.
Pressure is always compressive and perpendicular which is not in the case of stress
Crash Course Geology!
Is there any kind of physics that Newton doesn't have his hands in?
Why turbulence?
chaos man. entropy. heat death is coming for us all.
Matter & energy can interchange but can they be created or destroyed? Do we know this answer & if we do, how do we know it?
Oooow.. So that's why Japan's bullet train was designed like that. Making it faster.
thank you for help.. i made it through the examination theory part.. all with imagination and your examples😁😁 no puns?😂😂
Anyone else reminded of Rakshata from Code Geass?
Why?
An engineer with similar character design.
Definitely, Rakshata Chawla who has beaten Earl Lloyd Asplund to creating energy wings
Slow down good damnnnnnn
Oh I was more interested in the Captain Marvel trailer that was played before the video!😂
Awesome
Very nice lesson! Has anyone noticed how amazing and (scuse me) beautiful Shini is? 10/10 would take out for coffee and discuss research projects
8 mil subs, 180 views 5 comments
MKBHD
I know I should be paying attention and learning something, but gosh she is beautiful.
Bad people
Huh?
2020 anybody
Physics girl is cute but u r more articulate.
I like men
*_flu_* ids
EVERYTIME I SEE HER POST A NEW VIDEO, I START SWEATING 💦
you have a stunning face. just sayin.
The quicksand graphic is false due to buoyancy. Please do more vetting of the graphics, and have them work with physics people more.
I think it was meant to be a little jab at how fictional media portray quicksand, not an acurate description of how quicksand works. But yea, unless adressed in a later episode, it could cement false notions in some viewers.
I'm so confused.... 😕
This woman... She both annoys me, and attracts me. I... I do not understand these feelings.
Crashcourse could vastly improve their view count if they stopped this identity politics garbage and let someone host the show who is actually charismatic and entertaining to watch rather than someone who lets them feel good about themselves because they're fulfilling their PC quota.
This guy is gross
I prefer non accent english
Her british accent is distracting.