Why Laminar Flow is AWESOME - Smarter Every Day 208

  • Published: 27 January 2019
  • Click here if Laminar flow is awesome: bit.ly/Subscribe2SED Get a total of $80 off (8 free HelloFresh meals in first month) go to bit.ly/2PGu55r and enter "smarter80" ⇊ Click below for more links! ⇊ Tweet me Laminar flow pics:bit.ly/LaminarTWEET

    If you've ever seen flowing water look frozen like glass... that's Laminar flow


    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:

    Reynolds Number:

    Osborne Reynolds

    Feeling froggy? Reynolds-averaged Navier-Stokes equations to solve on your lunch break:

    Other Fluid Dynamics videos on Smarter Every Day:
    Vortex Collision

    Shockwave Schlieren:

    The walking water mystery

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Comments • 11 405

  • SmarterEveryDay
    SmarterEveryDay   11 months back

    Laminar flow 4 Life (it's a subscription link) → http://bit.ly/Subscribe2SED

    • collin hince
      collin hince  5 days back

      Magnus Villumsen under rated comment

    • Xeiro Xd
      Xeiro Xd  3 weeks back

      check out king of randoms laminar flow fountain, MIND BLOWING

    • Mangus
      Mangus  1 months back

      You need to check out r/wtwfotmjajtratcab

    • daddy of spyffi
      daddy of spyffi  1 months back

      @Jaidyn Russell 144 p squad is real doe

    • Skrillix 5657
      Skrillix 5657  2 months back

      SmarterEveryDay At the Arizona science museum we got a big exhibit with water

  • c t
    c t  2 hours back

    Seeing the flops with the plastic pool at the beginning of the video, I would suggest you to change the name of the channel to "backyard random science" or Just be more prepared when you deal with physics or science in general, in order to take you seriously ...no offense!

    • M A#np
      M A#np  12 hours back

      i would like to see what a laminer flow spout going through a sheet of laminer flow looks like.

      • Jakob Selter
        Jakob Selter  14 hours back

        2:36-3:22 YOUR AT THE SPACE MUSEUM RIGHT NEXT TO SPACE CAMP(I went to space camp so I’ve been there)

        • Francesco Cipriani
          Francesco Cipriani  16 hours back

          you could open the VALVe of your garden water tube for laminar flow but punching hole in a plastic pool makes a lot more sense

          • Omer Adnan
            Omer Adnan  1 days back

            7:01 he’s wearing a leather strap watch wow he’s rich and spoiled he’s wrecking it

            • Omer Adnan
              Omer Adnan  1 days back

              He’s wearing a leather strap watch

              • Alisa Beardslee
                Alisa Beardslee  1 days back

                I’m a mom, and I love laminar flow. Why? Because moms are always right! 💜

                • Jeff Allen
                  Jeff Allen  1 days back

                  Would it matter whether you stabbed the from inside? Thanks

                  • Nicky Butcher
                    Nicky Butcher  2 days back

                    Dad: “My daughter made this science project!”
                    Everyone that knows her dad: “riiiight”

                    • Diego Fernandez
                      Diego Fernandez  2 days back

                      now I want to learn about those fountains!!!

                      • Whab Whab
                        Whab Whab  2 days back

                        You’rr the best person on the planet

                        • Sam Sam
                          Sam Sam  2 days back

                          Cool stuff

                          • Alex Allen
                            Alex Allen  2 days back

                            The Creative Discovery Museum. Man, that place was the best growing up in Chattanooga!

                            • Stephan Osther
                              Stephan Osther  2 days back

                              This is so wierd. I follow your channel and have done for many years.

                              I'm now studying for my exam on retinal imaging and the use of fluorescein angiography. Part of why it works in detecting pathological problems in the bloodflow is "liminar flow", which i don't quite understand how works. i try youtube, and now it has lead me to this video .Thanks :D

                              • jeffin jose
                                jeffin jose  2 days back

                                So much of information we get after watching your videos . Very cool and awesome channel .

                                • Jschim
                                  Jschim  3 days back

                                  that fountain is so cool! I have seen it in person at the airport

                                  • Tarik
                                    Tarik  3 days back

                                    yooooooooo, that's the creative discovery museum in chattanooga! I live like a block from there... this blows my mind.

                                    • Paul G
                                      Paul G  3 days back

                                      He just poked a hole in his kids swimming pool. That is just wrong !

                                      • Syed Waqar
                                        Syed Waqar  3 days back


                                        • Gandy Dancer
                                          Gandy Dancer  3 days back


                                          • Andy Heffron
                                            Andy Heffron  3 days back

                                            When traveling to Detroit I always arrived at the airport early so I could spend time by that fountain in the Northwest terminal at the Detroit airport. Loved watching the reaction of the kids.

                                            • JR JayBird
                                              JR JayBird  3 days back

                                              This dude be popping a pool for fun, yet im here in Australia burning my butt off wishing for that pool

                                              • bryce witko
                                                bryce witko  3 days back

                                                your too smart to use hello fresh man.. so much trash and waist and plastic that ends up in landfills from every meal.

                                                • bryce witko
                                                  bryce witko  3 days back

                                                  Who is this guy! I love how much he loves this stuff!!

                                                  • Matthew Naugler Klassen

                                                    Vancouver has some great laminar flow fountains. Including that kids play bubble with CO2 that gets trapped under the fountain

                                                    • The Temporal Nacho
                                                      The Temporal Nacho  4 days back

                                                      9:35 you can thank me later

                                                      • The Hungry Hunter
                                                        The Hungry Hunter  4 days back

                                                        I never realized how much I love laminar flow thank you.

                                                        • Bort
                                                          Bort  4 days back

                                                          Parental supervision and guidance = My dad did it for me

                                                          • frien234
                                                            frien234  4 days back

                                                            Probably you don't know, aliens used that principle to shield their spaceship as well as propulsion

                                                            • Sebastian Теjeda
                                                              Sebastian Теjeda  4 days back

                                                              Laminar Flow occurs inside our blood vessels, and it's essential for maintaining the integrity of the endothelium in the main arteries. Laminar FLOW!

                                                              • EmptyWalletMultimedia
                                                                EmptyWalletMultimedia  4 days back

                                                                "smarter every day" boomer makes water fall in different shapes

                                                                • Louis Green
                                                                  Louis Green  4 days back

                                                                  Sub to zhc

                                                                  • Riley Hillier
                                                                    Riley Hillier  4 days back

                                                                    As a pilot i subscribed. This stuff amazes me

                                                                    • porksboy
                                                                      porksboy  4 days back

                                                                      When I was a kid I would get in trouble for playing with the watter in the kitchen sink. The faucet there would create what i would later learn was laminar flow. If you put a smoth polished spoon in your laminar stream you can get some neat shapes by varying the angle of attack.

                                                                      • MrHankeh411
                                                                        MrHankeh411  4 days back

                                                                        SNATCH BLOCK

                                                                        • Jay S
                                                                          Jay S  4 days back

                                                                          You live in Michigan

                                                                          • Roni Byman
                                                                            Roni Byman  4 days back

                                                                            I DO!

                                                                            • david sanchez-cortes
                                                                              david sanchez-cortes  4 days back

                                                                              i got this tattoo on my groin show my love for laminar flow, & I got this tattoo on my butt to show my hatred for turbulent flow

                                                                              • Enzo Cuenca
                                                                                Enzo Cuenca  4 days back

                                                                                have you ever washed a spoon?

                                                                                • Nick Glass
                                                                                  Nick Glass  4 days back

                                                                                  I love watching people do what they enjoy doing.

                                                                                  • Andy Robertson
                                                                                    Andy Robertson  4 days back

                                                                                    put a spoon under a tap and you can get laminar flow really easily.

                                                                                    • Fred Bergeron
                                                                                      Fred Bergeron  4 days back

                                                                                      Turbulent flow is also essential for moving different types of fluids in pipelines without mixing them.

                                                                                      • Jake
                                                                                        Jake  4 days back

                                                                                        Geometry is a cop-out parameter, everything in the universe is dictated by geometry at some level lol

                                                                                        Laminar flow is awesome! I need to reproduce and experiment with this phenomenon

                                                                                        I enjoyed the pool stabbing scene, it would have been satisfying to have a scene with you patching it up later lol

                                                                                        • no name isono
                                                                                          no name isono  4 days back

                                                                                          Dont wear jeans dude,put on some beach shorts next time..💪

                                                                                          • Zachary Pritchard
                                                                                            Zachary Pritchard  5 days back

                                                                                            Science world in Vancouver bc has a laminar flow fountain that has smoke under it when you break the flow the smoke escapes

                                                                                            • Jambi
                                                                                              Jambi  5 days back

                                                                                              9:46 when I see something cool

                                                                                              • ヨーソローちゃん_17

                                                                                                Are you a mechanical engineer?
                                                                                                That girl did a great job!