@@gauravshakrawal4336 Thanks for such kind words 😀. Just tried to explain in a simple way.

Thanks for the appreciation

The number represents the strength of the flux field. The greater the flux of field through a small surface enclosing a given point, the greater the value of divergence at that point.

Thanks for such kind words

Thanks for the appreciation

Thanks for the appreciation

Glad you liked the video

Pitot tubes are used on airplanes as speedometers to measure their speed.

Triangle BDO is a right angled triangle at point D with angle BOD = theta and OB = r. So, we can write sin(theta) = BD/ r. On rearranging, we get BD =r *sin(theta). In triangle ABD, angle ADB = d(phi). Now, we use the formula mentioned at 4:39, l = r * theta. So in triangle ABD, AB here represents l and d(phi) represents theta and BD represents r. Finally we can write AB = r sin(theta) * d(phi). I hope it gets clear now.

In the video, Bernoulli's equation is applied at points 1 and 2 which are inside a pipe with a fluid flowing through it.

Thank you very much, sir, for replying to my question. My confusion was about point 2 actually. Because all the fluid inside the pitot tube is in static equilibrium and does not move, and so point 2 isn't moving either. But then i remembered that in other problems, for example when draining a large tank we also apply the Bernulli equation between a point that's not moving( at the top) and a point that is moving(at the outlet).

@@captainamericawhyso5917 Yes. You are right. At a point, inside a flowing fluid, the fluid may come to rest but still you can apply Bernoulli's equation.

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Thanks for the appreciation 😊

I am happy that you liked the explanation 😊

Thank you very much for those thoughtful suggestions. I will try to implement them in my next video.

I didn't understand your question? Is this related to this video?

The volume of region 1 is written in terms of velocity, area and time. The unit of volume is m^3. If we write units of velocity, area and time then (m/s)*(m^2)* s = m^3.

@@ENGINEERINGSTREAMLINED thank you sir

Limit in a formula means that we've limited or shortened the formula to a certain extent or in a range of values. In the present video, when we say at Limit ∆t ->0 it means that we have restricted the formula to a short interval of time only. So, for a short instant of time dBsystem /dt gives instantaneous change in B of a system with time. You can check this link for more detail explanation on limits math.stackexchange.com/questions/3920654/why-is-delta-x-tending-to-be-zero-in-dy-dx-and-not-delta-y-tending-to-be-0

Limit in a formula means that we've limited or shortened the formula to a certain extent or in a range of values. In the present video, when we say at Limit ∆t ->0 it means that we have restricted the formula to a short interval of time only. So, for a short instant of time dBsystem /dt gives instantaneous change in B of a system with time. You can check this link for more detail explanation on limits math.stackexchange.com/questions/3920654/why-is-delta-x-tending-to-be-zero-in-dy-dx-and-not-delta-y-tending-to-be-0

Thanks for such kind words

Thanks for the appreciation

Glad you liked the video

Thanks

😀

Glad you liked the explanation

Glad you liked the video

I hope this video clears your doubts.

@@ENGINEERINGSTREAMLINED yes sir 🙏🙏

The maximum height of the siphon is not dependent on the dimensions of the pipe. It is only dependent on the atmospheric pressure, density of fluid and acceleration due to gravity (g). So, using a tube with wider diameter on the downside will not affect the maximum height of the siphon.

Yes. In the pipe flow, I have shown stagnation pressure greater than static pressure. I think you have commented about the last part of the video where stagnation pressure and static pressure boxes of a pitot tube are shown of the same size. The boxes just show the two pressure chambers not their magnitude or value.

@@ENGINEERINGSTREAMLINED oh thanks for your comment . i really appreciate your answer

@@cleison-em7bk You are welcome

Theta is varying from 0 to pi/2 because for a surface emission, the radiation is emitted only within the hemispherical volume. If you see the figure at the last part of the video, it is a hemisphere and theta can only be varied between 0 and pi/2. But if you consider volume emission, then emission will happen within a sphere and theta will vary from 0 to pi.

@@ENGINEERINGSTREAMLINED can you plz make video on how angle 0 to pi cover whole volume of sphere

@@nishaantil7503 Ok. But making a video will take few days.

@@ENGINEERINGSTREAMLINED no problem

@@ENGINEERINGSTREAMLINED thank u very much 🙏🙏

Thermal Engineering

I am glad you liked the explanation

Thank you for the comment

I am glad the video was useful for you.

Did you like the video or did not like the video?

Started out good but then went south when proven phenomenology was glossed over as an impossibility. @@ENGINEERINGSTREAMLINED

Thank you very much for the comment

Water is denser than oil

Which time frame in the video are you referring to?

Thanks for the compliment. I am happy that you liked the explanation 😃

Which part you didn't understand?

Thanks for the appreciation😀

I think you have not understood the concept clearly. The first theory of siphoning which I discussed due to weight difference is used by a man named Vittorio Zonca which failed as I said in the video. Subsequently I said, siphoning happens due to pressure difference. In the beaker which is at a higher elevation, the end of the pipe is at atmospheric pressure and the end of the pipe on the other beaker (at lower elevation) is at a lower pressure (vacuum) which initiates the flow of the liquid. The liquid flow stops when the liquid level on both the beakers becomes equal resulting the pressure on both the sides to become equal.

Did you like the explanation?

sure is, especially the intro!

Thanks for the comment. I will have to think how to calculate the time required for the liquid level in both reservoirs to be at the same level. If I get the answer, I will comment it here.

Is it a differential equation in which we can calculate time constant?

I know that, but can you solve that differential equation and write the solution.

Danke🙂

I am glad that you liked the explanation. I will continue to make more videos related to fluid mechanics and heat transfer. Thanks for the appreciation.

Glad it helped!

I am glad the video was useful for you.😀