The Venturi effect

Demonstrating and explaining the venturi effect, and how it can turn pressure into suction:
woodgears.ca/physics/venturi.html

[@MaxSebastianMayer]

My dude here from explaining the venturi effect to building a flamethrower

[@robindunn7248]

I am really grateful for this video. I am taking a course that just said, "make a venturi". So I googled it, wiki'ed it, and was still lost. A video is worth a trillion words. Well demonstrated. Thank you.

[@thomhong]

I have never seen this topic explained like this before. The visuals you create are VERY clear and informative.

[@KeenPeachy12]

What a great video. I'm studying for the MCAT and having all these visual examples so much more effective than reading about in a text book.

[@musicrocksfu]

lol cam here after CP FL2

[@monav2686]

@@musicrocksfu same tho

[@charlizard5901]

musicrocksfu woah holy shit same

[@jahazielgarcia4740]

@@musicrocksfu same lmaoo

[@reenanwa]

Fl2 question 25?

[@mebezaccraft]

I never knew woodworkers could be this badass

[@thedge7]

Adding fire is always good.

[@killer-of-mufasa9246]

Should have used this on the wasps

[@AzureOnyxscore]

or spiders...

[@genmasaotome3503]

That's what I was about to say...

[@CorinGatwood]

what have the spiders done?

[@stupidsmartmonkey]

+LemonSpy_ we are used to them. Everyone that visits has a heart attack

[@nou4898]

369 likes

[@matthiaswandel]

Actually, I filmed this during the drought. I hosed down the grass and the trees around before doing the flame experiments.

[@adamtain7627]

So basically does this Venturi effect help fan out for example fuel to help spread it out more easily if it’s either for liquid or gas fuels?

[@ercost60]

You sir, are an artist and genius. I thoroughly enjoy your channel. Every video is a fascinating gem. Thank you for sharing your many varied creations.

[@nsideoutn8439]

This video is great. I think I’ll check out more of his.

[@AkiraKeiKyo]

Thank you good sir for demonstrating the venturi effect and giving a thorough explanation. It make a lot of sense now with what I am learning in the lab :)

[@BYSMA4th]

Have been looking around for a good explanation of the Venturi effect since I've heard sports cars use it...this has been the most intuitive explanation I've found so far. Thanks! :)

[@SamHaugen]

Excellent visual display of the Venturi effect. Just what I needed!

[@LividLeon]

The best explanation out of all the videos I saw. I like how your video is simple and to the point.

[@steveyknoxville]

Fantastically clear and precise explanation. Thanks Matthias

[@jrcahoon]

Great video! Mattias, you have a talent at clearly explaining concepts. I would love more physics videos.

[@DarkSparkCannabis]

This is a fantastic video. I learn best with examples, and when learning a new concept, displaying several examples really paints the picture. Thank you.

[@TheClobbersaurus]

Thanks for the fantastic quick explanations and demonstrations. I wish more more informative videos on youtube were of this quality

[@lezenfilms]

0:10 *Cocaine Snorting 101*

[@zakkyummms]

That comment was so very insightful. Please, I hope you continue.

[@lezenfilms]

zakkyummms No need to be sarcastic, but then again you didn't say much either, I was making fun, and if you don't like it don't click that reply button.

[@CurtyCruise]

Thats joke

[@aomimezura11]

Watch "the most important meal of the day" by the minor prophets

[@Simon-oy7kf]

r/woooosh@@zakkyummms

[@NikLyons]

I love this guy! So many great tutorials! Spreading the knowledge! Thanks!

[@pocket83]

A sandblaster might have been worth mentioning. That was the first thing that came to mind for me.

[@hardwirecars]

jet engin for me its how the after burner works if im not mistaken.

[@schwuzi]

For me it's a carburetor

[@edwaggonersr.7446]

Your curiosity about just about everything is refreshing.

[@matthiaswandel]

It's specifically much more the venturi effect than the bernuli principle. The bernulli effect is about energy conservation, whereas this is about mixing of air streams. That's why a vernturi pump is a venturi pump, not a bernulli pump.

[@bigchris4168]

Kind of new to your channel but love your work...Keep doing what your doing man!

[@SugarFreeEngineering]

Excellent work; I'm going to use a clip of the first example with the paper tube for part of a presentation as an example of the venturi effect and how it relates to my research. Thank you!

[@sayedpritom]

This is the best video I have found on the Venturi effect

[@matthiaswandel]

The opening on the metal tube is about 1.5 mm in diameter. The numbers I quoted were to illustrate, I have no idea what the actual speed was.

[@GarageWoodworks]

The principle is also used in old chemistry labs to provide vacuum for rotary evaporators. An adapter is connected to a faucet to create the vacuum. Wastes a good deal of water in the process.

[@AnitaHandy65]

We actually used this setup in my high school chemistry class. Never understood how it worked back then... lol

[@gerardkiers5794]

The fact that you explain how ik works makes it even more fun to watch!!!!!!!!!!!!

[@SeraphimKnight]

That hose-in-the-bucket thing blew my mind! Really cool effect.

[@homemadejobee]

I love how you are mixing things up. I love the vids

[@matthiaswandel]

A Pelican fountain pen. Bought it in Germany Nice no nonsense fountain pens, work way better than the parker fountain pens (which are mostly for status)

[@matthiaswandel]

For ceramic glazing, you wouldn't want to use a real spray gun. That stuff is thick and abrasive, so the straw is an excellent idea.

[@AirshipNorway]

I really liked they way you explained it. Seen so many and was hard to grasp- you put it very easy. With fire -and math too :)

[@mightyfinejonboy]

hi, what a great video !! very interesting effect that a few people in the diy gas turbine forums are looking at, to use as a argumentation for there gas turbine engines. either running dry or using a afterburner.i was talking to someone in regards for using this to help the thrust on there jet powered gokarts .i really liked the way you explained it, and made it very clear. regards jon

[@matthiaswandel]

Pelikan, with the regular blue Pelikan ink. Pelikan makes the best fountain pens. Plain, simple and relatively inexpensive, but they write way better than expensive Parker pens.

[@nsideoutn8439]

Great video. Thanks. I saw a comment mentioning all your videos are very informative and good like this so I will be checking out more.

[@manchul]

Experiments so amazing senpai.

[@matthiaswandel]

I wanted to try it with sawdust, but it's really hard to ignite. I think if I had a bonfire to spray it into, it might work.

[@winnshak]

Great job explaining in such a simplistic format!

[@Observ45er]

But wrong.

[@themightywartit]

Thank you thank you thank you. I always enjoy your lessons they are very well explained

[@kengmeatleafer]

You are an amazing person Matthias. I love you.

[@javonf1]

Hello, awesome video. I am trying to calculate the air intake flow rate related to the pressure drop. Should I just calculate the pressure drop inside the blower and then relate the pressure from the vena contracta with the atm pressure to calculate the intake? Thank you

[@matthiaswandel]

The Bernoulli equation is based on conservation of energy, and energy is not conserved when fluids of different speeds mix.

[@Johny40Se7en]

You know the bucket of water with the hose pipe experiment you demonstrated, if you swapped the hose pipe with an airline like you used for the saw dust, I'm guessing that's what you're explaining? Water's way more dense than air, so the energy will dissipate and not push the water out as quick as water to water would... makes sense.

[@1islam1]

@@Johny40Se7en ⚠️ God has said in the Quran: 🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 ) 🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 ) 🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 ) 🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 ) 🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 ) ⚠️ Quran

[@Larenzoid]

A very good explanation, Matt. Thanks for sharing it. I'd heard of the Venturi effect and had a basic idea of it but your demonstrations really make it clear. Be careful with that flame thrower, though. ;-) Larry

[@EliotTruelove]

I know this is an old video, but could the exhaust port of a vacuum be hooked up to the intake port of a vacuum to increase the suction effect using the Venturi effect? Or is there diminishing returns?

[@DrDAC-go7hs]

Thanks for the great explanation. 10 years in the making

[@saiganeshnangunoori8018]

Crystal clear explanation 😃. It cleared all of my doubts.

[@flouflout]

Very informative Matt - I learn what I can.

[@jimmywaller9376]

Dude you are so smart I don't even know how you have made it this far... WOW. You are amazing!

[@RonRonnard]

Excellent demonstrations and very clear explanations.

[@BodybagBliss]

Great video! You just earned a new subscriber :)

[@rwhope]

Your neighbors must love you! Great explanation of the Venturi effect. Thank you

[@doronmerdinger6455]

Thank you Matthias for such a simple presentation of a complex scientific phenomena. Do you know if the Dyson bladeless fan, which is using the Venturi effect, is more efficient by thrust to power?

[@matthiaswandel]

actually, the venturi effect is very inefficient. And the bladeless fan has a blower inside, which * surprise* has blades!

[@WhiteRayne2]

I love your videos mathias!!

[@MrMDavisson]

Matthias: I need to move about 18 inches of blow-in insulation from one part of my attic (approx 400 sqft) to another, and doing it by lifting & carrying would not work (the spaces are separated). Do you think I could aim a hose attached to the outlet side of my shop vac into the side of a larger hose (4"?) then suck the insulation from the "back" end of the 4" hose and blow it out the "front" end in the new location? Or a leaf blower instead of shop vac?

[@Johny40Se7en]

Lovely demonstrations. Cheers. That is a cool effect! 😄😊

[@lasserpientes77]

I found no better explanation than this example, thanks. I'm from Colombia!

[@wkl747]

Very educational. Thank you for your demo.

[@iTzDaNiiLo]

Genius!!! Thanks for this valuable info!!

[@dnsmithnc]

I get the venturi effect now. I've heard of it in a number of contexts all my life but, really did not know what it was exactly. What I see happening is that you're creating a relative low pressure zone in the top of the straw which creates a vacuum which draws up the liquid or gas. Very cool.

[@gizz730]

brilliant! The examples are so clear

[@workinalday4351]

Great demonstrations in this video.

[@jamest.5001]

When you thought you knew how things work! I love looking at things with great detail, you often learn it's much more interesting than you thought!

[@Observ45er]

But the explanation is incorrect. It is NOT the "venturi effect", but *entrainment* .

[@Kenchinito2207]

thx for the phisics class, you explained it better than my hydraulics proffesor.

[@mattgates4644]

Thank you for quickly explaining this and very well done

[@FlightHours]

Thanks for this - studying for a pilot’s license and this helped to (finally) conceptualize this. Got a video for aerodynamic lift / Bernoulli’s Principle?

[@Observ45er]

This looks like a bot reply... The video is bad science.

[@RollingEasy]

I'm about to make up a new exhaust system for the car and I wondered if the angle of the very end of the tube, plays much of a part in better moving the exhaust gasses? Ie. a 45 degree angle (or less), coming out on one side with sliced section facing the 'wind' or with it facing away from the 'wind'. Just curious about how each might affect things. 2:10

[@ParmMohan-us6rn]

Very well done. Thanks for the explaination so thoroughly

[@matthiaswandel]

Thanks! People know about bernoulli, and think it applies to all flow situations. It doesn't.

[@ndxs]

Damn, I was wondering about the same. Could you please explain more

[@mecosecos]

How does Bernoulli's principle not apply here?

[@garywayne8567]

Matthias, thats pretty bad ass! Thanks for the demo.

[@Sohave]

That is also how a steam injector works for getting water pumped into a pressurized boiler (eg on a powerplant or a steam locomotive) and how a Giesl ejector creates a draft in the boiler of a steam locomotive. Airbrushes and many paint guns uses this to propel the paint.

[@permofit]

great demo and video

[@dakellymon]

Excellent demonstration of the venturi effect.

[@SabreCycles]

This is exactly what I was looking for! Now I won't need to experiment as much. TY

[@williamcox4764]

Your a really smart and inspiring guy when I graduate from high school in gonna go for a degree in things like this thank you for all your knowledge and your videos are inspireing keep up the great work I hope to be like you someday p.s. your dad must have been very proud of the great work you do and all your accomplishments....take care and make a wooden fidget spinner plzzz i started a business making these things....

[@Matthewjtheriot]

Great explanation. Appreciate the visual

[@monetweldon8672]

Very interesting concept and neat applications. Thank you for making this video with these interesting explanations.

[@Observ45er]

This is wrong. The Venturi Effect has a varying cross section pipe. You have none. This is a false explanation. If you're going to explain something P L E A S E understand it well FIRST This is a fundamental fluid dynamics phenomenon caused by viscosity and called ENTRAINMENT NOT venturi. . ... As pointed out 5 years ago by donepearce and 3 years ago by me,​ this is predominantly entrainment (viscosity causing inter-layer 'friction'). When you Say turbulent mixing, you are the closest to the real science. .. The powder is "sucked" into the tube by the atmospheric pressure accelerating the air into the lower pressure in the tube. That lower pressure is caused by the entrained air moving out lowering the pressure upstream from the high speed nozzle. It is precisely the same thing used in ejector pumps. sigh...

[@monetweldon8672]

@@Observ45er ...ok. My comment still stands, the video is neat. But go off I guess.

[@hotfuzz1913]

Another excellent video Sir

[@tedro7870]

Thanks! It helped me understand how air compressor can suck. It blew my mind.

[@Observ45er]

It is called entrainment. He describes the effect correctly, BUT *It has nothing to do with the venturi.* sigh. *It is ENTRAINMENT*

[@intocoasters]

This is great! I have a fog effect that is more effective is there is a gap between the nozzle and pipe I use for routing. Thank you for sharing.

[@einsteiner900]

FYI, this application of the Venturi effect is known as an injector, there is a neat Wikipedia article on such devices. They used to be used to pump water into the boilers of steam locomotives using high pressure steam from the boiler.

[@cardinia1]

you got me in the first few seconds been tryna understand this other you tubes they dont hold a candle to ya bro

[@Yusufmasron]

Great demo! Like the Mathias practical science to woodworking.

[@egn83b]

Great jet engine and good explanation of the venturi effect.

[@coxsj]

Also explains how an airbrush works. Thanks, i enjoy your vids.

[@jalenmotley]

thank you needed this for a research paper mazing explanation simplest way you could. great interesting video

[@gambhirah]

I like your video very much. Do you have something I can use as a gas burner for a brick oven. I bake bread and I would like to know what I can use. thanks

[@roswalt1]

You must be a fun neighbor to live next to. Thanks again for another great video.

[@Woodman721]

What was the flammable liquid you sprayed? Awesome video. 😄

[@caleb_helm]

I think that's how carburetors work. The engine pulls in air by the vacuum created from the piston on the intake stroke, and then the flow of air causes the fuel to come up to be mixed with the air (like your spray gun example). :)

[@markcalabretta5457]

In the sawdust (injection) pump, the compressed air pushes air out of the top section of the cylinder thereby reducing the pressure in the lower section, as you describe. It operates on the principle of induced current, not the Venturi effect (there is no Venturi tube). Likewise for the hose in the bucket. The flame thrower is an atomizer nozzle. While some atomizers use a Venturi tube, this one doesn't and relies solely on the Bernoulli effect.

[@mrsoundsolutions843]

Another great video. Thanks

[@boldger13]

Fluid Mechanics for Engineers! Yay!

[@grieske]

The explanation of what happens is accurate. This name of the effect is, however, turbulent mixing, not the Venturi effect. The Venturi effect is the decrease in pressure at a restriction according to Bernoulli's law. This can also be used to create a low pressure, but it does not require turbulence nor viscosity. Thanks for the demonstration.

[@TheMrEM4N]

Thumbs up for learning something new!

[@Whisperin100]

Great explanation ,thanks :)

[@dumanator1]

You refreshed a memory of a modified Preval sprayer someone showed me how to make in my 1st yrs. of work. Same premise as the airhose mod., just attach tube to a screw on replaceable glass lidded container. When your broke, they work awesome. You gave me some good ideas for paint sprayers though, with your excellent drawings. I have to see stuff happen or you might as well talk Wookie? Thanks.

[@nxbis]

I came here from "Everything Wrong With Man of Steel".

[@bored.in.california2111]

Me too! That shit is hilarious!

[@minieyke]

me three

[@SmudgedScreen]

Me four

[@MahmoudZaki88]

Me five

[@darthyvardyreal]

Me Six

[@ib9rt]

I noticed you using a fountain pen there. On a different geeky subject, what model of pen was it and what ink? That looked like a nice blue.

[@almed2889]

clear, simple and great!!