Why Laminar Flow is AWESOME - Smarter Every Day 208
Added 2019-01-27 11:26:32 +0000 UTCTweet me Laminar flow pics:http://bit.ly/LaminarTWEET
If you've ever seen flowing water look frozen like glass... that's Laminar flow
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Personally, I find calculating Reynolds number to be quite difficult.
It's done differently depending on what type of flow you have. A pipe is calculated different than an airplane wing etc.
Some fluid dynamicists would tell you that it's an exact science. I personally feel that it's a bit subjective.
The most difficult parameter to nail down in my humble opinion is the characteristic length.
It's pretty easy for pipes, you just measure the diameter... but wings, plates, vortices...get complicated quickly.
You'll notice in the video I refrained from saying anything like
"Flow is laminar when Reynolds number is less than XXX" or
"Flow is turbulent when Reynolds number is more than XXX".
There are different schools of thought on this. Typically the transition between laminar flow and turbulent flow occurs somewhere between 2100 and 4000 (Reynolds number is unitless).
Laminar Flow:
https://en.wikipedia.org/wiki/Laminar_flow
Reynolds Number:
https://en.wikipedia.org/wiki/Reynolds_number
Osborne Reynolds
https://en.wikipedia.org/wiki/Osborne_Reynolds
Feeling froggy? Reynolds-averaged Navier-Stokes equations to solve on your lunch break:
https://en.wikipedia.org/wiki/Reynolds-averaged_Navier%E2%80%93Stokes_equations
Other Fluid Dynamics videos on Smarter Every Day:
Vortex Collision
https://www.youtube.com/watch?v=EVbdbVhzcM4
Shockwave Schlieren:
https://www.youtube.com/edit?o=U&video_id=BPwdlEgLn5Q
The walking water mystery
https://www.youtube.com/watch?v=KJDEsAy9RyM
Comments
Destin you should check out this Delta faucet I recently purchased. It uses a laminar flow to prevent a water jet from splashing all over the place. Really cool! <a href="https://www.youtube.com/watch?v=ZlAB9WjiKnQ" rel="nofollow noopener" target="_blank">https://www.youtube.com/watch?v=ZlAB9WjiKnQ</a>
The KeePassXC Team
2019-02-20 19:50:05 +0000 UTCI've passed on your love for Laminar Flow to many friends, plus you've also made me look out for Laminar Flow wherever I go - I thank thee Destin!
2019-02-18 12:28:04 +0000 UTC"Smarter Every Day just became a patron of Captain Disillusion" heh
Nugget (David McNett)
2019-02-15 16:57:21 +0000 UTCThis was super-rad, not gonna lie.
2019-02-06 03:07:45 +0000 UTCHey Destin, I enjoy your videos for some time now and just joined team Patreon to support you. Loved the luminar flow episode, LUMINAR FLOW IS THE BEST KIND OF FLOW!!!
Wolfgang Englbrecht
2019-02-01 05:37:39 +0000 UTCabsolutely love you Destin... love these videos. But I'll have to find another way to support... I can't, in good conscience, give any more money to Patreon. I hope you understand.
2019-01-30 18:50:24 +0000 UTCAlso, LAMINAR FLOW IS THE BEST FLOW!
Daniel Ryan
2019-01-30 08:25:58 +0000 UTCDESTIN! This video is quintessential Smarter Every Day! I absolutely loved this episode. This episode fully captured what makes your channel great - an interesting subject enthusiastically explained by someone who is genuinely excited about the subject and actually learns with the viewer. Your actual brain freeze realization when you made the laminar bubble and growing amount of holes in your pool really made this video for me. I love how your brain looks at the world, and its videos like these that make me glad to support you and your channel.
Daniel Ryan
2019-01-30 08:25:40 +0000 UTC<a href="https://youtu.be/y7Hyc3MRKno?t=825" rel="nofollow noopener" target="_blank">https://youtu.be/y7Hyc3MRKno?t=825</a> This sound
Kyle V Gilbert
2019-01-28 06:43:15 +0000 UTCI LOVED the phone under the fountain clip! I wonder, would it be possible to make a fountain with that bubble/dome effect large enough that people could stand under it? There could be a little something to divert the flow for a wedge-shaped section so people could get in and then wander around underneath. Or would it not work at that scale (too much opportunity for air movement to mess up the flow of the water)?
Halbereth
2019-01-27 20:19:08 +0000 UTCI suspect some of that has to do with the fact some of the videos embedded are much older (I remember seeing one of them on Smarter every day 2)
2019-01-27 18:56:42 +0000 UTCIs it possible to show the difference between laminar and turbulent using Schlieren imaging under water? (Or through a body/layer of water?)
Li Yuanhe
2019-01-27 16:48:56 +0000 UTCWhy is the video quality capped at 360p?
Nick Sullivan
2019-01-27 16:16:31 +0000 UTCI love that you include the trials that don;t quite work out. Like flooding your workroom by poking a pencil through the kiddie pool. It looked like you were using a classic No. 2 pencil -- surely not! It wasn't hexagonal, was it?
Kristy
2019-01-27 14:52:24 +0000 UTC
