Venturi Meter Problems, Bernolli's Principle, Equation of Continuity - Fluid Dynamics

This physics video tutorial provides a basic introduction into the venturi meter and how it works. It's a device used to measure the velocity of a fluid in a tube. It works by changing the cross - sectional area of the pipe to cause an increase in fluid speed which leads to a reduction of pressure which can be visually measured due to the height difference in the two columns. This video explains how to derive the formula that can be used to calculate the fluid's velocity on the left side of the meter using bernoulli's equation. The flow speed in the throat can be calculated using the equation of continuity and the difference in water pressure can be calculated using the gauge pressure formula for fluids or using bernoulli's principle. This fluid mechanics video contains all the formulas and equations you need when dealing with physics problems involving the venturi effect.

Physics Video Lessons:

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Mercury Barometer Problems:

Open Tube Manometer:

U Tube Manometers:

Archimedes Principle & Buoyant Force:

Buoyant Force of Helium Balloon:

Physics - Intro to Buoyancy:

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Apparent Weight and Apparent Mass:

Fractional Volume of Submerged Object:

Hydrometer Physics Problems:

Volume Flow Rate and Mass Flow Rate:

Equation of Continuity:

Bernoulli's Equation:

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Torricelli's Theorem & Speed of Efflux:

Dynamic Lift Force:

Viscosity of Fluids and Velocity Gradient:

Full-Length Videos and Worksheets:

Physics PDF Worksheets:

[Shackled]

For anyone having issues with this one, do this. Just watch it through once and write down everything a long with him. Then just attempt to derive that first equation by yourself without looking and only refer back to your notes if totally stuck.
Then watch it again and talk along as if you are discussing it with him and look at your notes. Lastly, take a short break and then come back and watch it at double speed and comment along with it. You will be amazed at how much you have learned in the short time.
The rest will be cake.

[Chivende]

Your voice is magical 😅😅😅😅...i wish all lectures were this calm..and the content is amazing, everyone gather here😊😊😊

[truth]

waoh i really enjoy how you explain things unlike my fluid lecturer he makes me want to run

[VinurjanSriramanan]

Thank you so much from france i didnt found a video about venturi in french u help me alots thx u

[biakmuantonsing]

Keep it up..the moment I watch..I do not need a tutor cuz this online explanation is much better..nice.imparting.

[POLISNecro]

Thank you so much. Will it be possible to see one with head losses calculations please?

[gregroth]

Love this. Lost me right at the end.
I'm applying this to a social formula. Thank you.

[syamilnazri]

i almost do a dark spell to my lecturer until i found your video.. thanks so much

[didiruhyadi]

Thank you so much. keep make the lesson video, it's very help me axe final exam

[sparshsaxena]

This channel is a boon for JEE aspirants in India like me who cannot understand concepts from books.

[raphaelaja]

great explanation, really helped me !

[anilsharma-evmy]

Relatives velocity in space formula is like relatives of venturi effects formula 🥂

[alish]

i.imagine it as a baloon when we pressurize it and rap the outlet but only let a tiny bit of air to escape, the speed of the gas when its outputed to the other side, its velocity dependent on the source pressure of the cylinder, or storage tank

[JeromeNyamekye]

Nice and a wonderful However, I went through the calculations but I did not understand how you calculated the area of the diameters of the pipe and the venturi. Is there any explanation to give to that please

[sparrow]

Thanks a lot....got a lot og info. Important for my JEE

[bryanarevalo]

Why is the pressure at B smaller? Wouldn't it be greater due to having a smaller crossectional area at point B?

[alish]

the speed must be slower in yhe bigger portion of the pipe but when it reaches the narrow spot and gets out to another place similar to the first pipe or doesnt matter but it has to go though this process to drop its tempreature, its all about dropping the temp, by jettjng it from a narrow jet, but the velicity of the gas beibg sprayed or jetted, is relative to the inside pressure of a closed system, to open system, or atmospheric pressure, this is applied to steady cold, the colder the better, the whole refriregeration idea is about getting the heat out of the system, or place , it has to do with pressure of vourse but the primary work is making a way by means of maniplulatig pipe diametrs and leghtes, if any source of heat is intruduced ti an AC OR REFRIGERATION system the balance will be lost, the normal working way of these systems, keep heat away .

[jorgemercent]

I am hesitant about calling P1-P2 Delta P, because change is always final minus initial

[zc]

Could you tell me, is there a ratio for the most efficient venturi of how much you have flowing in to how much is added via the venturi?

So if you have a constant flow rate and constant pressure in say of 10bar air passing through, how much in comparison could be drawn through?

[LukaŠtih]

what if the water level at point B was higher than A, wouldnt then p1-p2 be negative because p2 would be larger than p1, would then delta p be negative or? thats the only part that confuses me