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@@ENGINEERINGSTREAMLINED Of course, these videos are very helpful for all the gate mechanical aspirant.

I am happy that you liked my explanation.

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

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@@ENGINEERINGSTREAMLINED from one Indian to another, hell yeah man

I am glad it was helpful for you.

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I am glad you liked the video

Thanks for appreciation. Do watch my other videos if they are relevant to you and share with your friends.

Thank you for the appreciation and I am happy that you learned something from my video.

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Thank you very much for the appreciation. Do watch my other videos if they are relevant to you and share it with your friends.

@@ENGINEERINGSTREAMLINED sure ❣️😊

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@@ENGINEERINGSTREAMLINED sure..

@@ENGINEERINGSTREAMLINED all the best for your future Endeavours..

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It takes time for research and making animation. I try to make videos when I get time. Any specific topic in fluid mechanics on which you would like to have a video?

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an airoplane was traveled at an altitude of 10 km,speed 75 km/hr.at sea level, the atmospheric pressure 25 Kpa(abs) & temperature was -52 c. Find the nose pressure of the airoplane. Please help me by solve the problome..

@@azizsarker6167 Hi Aziz. I am not an expert in calculating the nose pressure of an airplane. But, I will try to search it.

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

The expression at 4:17 is V=sqrt((2*(p2-p1))/rho)). The expression for p2-p1 is obtained from Bernoulli's equation applied on the manometer liquid and replaced here. So, Bernoulli's equation is P1+(1/2)*rho*V1^2 + rho *g *h1 = P2+(1/2)*rho*V2^2 + rho *g *h2. Since V1=V2=0 as liquid inside the manometer is stationary. So we can further write P1+ rho * g * h1 = P2+ rho *g *h2. P2 - P2 = rho * g *(h1-h2) we can write, h1-h2 = delta h delta h = (P2 - P1)/ (rho *g) Replacing P2 - P1 in the expression of velocity we get V=sqrt((2 * delta h * rho_l *g)/rho)) I hope it gets clear now.

@@ENGINEERINGSTREAMLINED thank you, I fully understand now

You should convert the pressure from Hpa (hecto pascal) to Pascal and then use it.

Thank for the comment and suggestion. I will try to put numbers also for demonstration in my later videos.

@@ENGINEERINGSTREAMLINED You're welcome. Good luck on your future tutorials. ;-)

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.

The direction of wind should be towards the pitot tube. For example if the pitot tube is on a aircraft and the aircraft is moving from right to left. Then the air will enter the pitot tube from left to right.

Use Relative speed concept of speed of air and speed of plane

I don't think accelerometers can be used instead of pitot tubes for velocity measurement in aircrafts. Because aircrafts are not always moving in a straight direction, they sometimes go up and down due to which the angle of attack of air on the aircraft can change and the stagnation point moves as the aircraft angle of attack changes. But the pitot tube front opening always hits the stagnation point so it can measure the correct velocity. Since accelerometers are kind of inertial instruments that measure acceleration using the force acting on the aircraft skin, the air will apply different force on different part of aircraft depending on the angle of attack. So it may give wrong value of aircraft velocity. So pitot tube is still in use.

@@ENGINEERINGSTREAMLINED Okay, but I got this question after realising that our smartphones use accelerometers and using that they show velocity on google maps I guess (I guess using integration and other algorithms)... So that's why the question. And also, can't we use 3 axis accelerometers and gyroscopes for better understanding with proper sensitive data excluding body vibrations and all...?

@@rohanshinde9575I think your question was very interesting and innovative thinking. But I am not an expert in accelerometers. So from my knowledge, I think it is not feasible for any accelerometer to measure correct velocity for any fast moving object especially which are rapidly changing orientation. The accelerometer can gauge the orientation of a stationary item with relation to Earth's surface. When accelerating in a particular direction, the accelerometer is unable to distinguish between that and the acceleration provided through Earth's gravitational pull. Using a three-axis accelerometer one could identify the orientation of a platform relative to the Earth's surface. However, once that platform begins moving, its readings become more complicated to interpret. For example, in a free fall, the accelerometer would show zero acceleration. In an aircraft performing a 60-degree angle of bank for a turn, a three-axis accelerometer would register a 2-G vertical acceleration, ignoring the tilt entirely. Ultimately, an accelerometer cannot be used alone to assist in keeping aircrafts properly oriented. As far as I know, gyroscopes are used in rockets but mostly for inertial stability and to maintain its trajectory. You can go to this link for more knowledge www.livescience.com/40103-accelerometer-vs-gyroscope.html

@@ENGINEERINGSTREAMLINED About the free-fall example, can't we use two or combinations of accelerometers like one is fixed for 1g and the other for zero-g acceleration at one reference point which is a standalone point. Also, found this wiki article fascinating on the inertial nav system- en.wikipedia.org/wiki/Inertial_navigation_system for a detailed comparison, can search the term 'pressure' on the webpage... They mentioned some errors in numerical integration under the drift rate section...

@@rohanshinde9575 I read the Pressure Reference System form the wikipedia page. It seems to be promising but still this system mainly depends on data from sensors and as mentioned, the data from sensors can cause errors due to environmental parameters such as temperature effects, engine vibrations, etc. So maybe in future if all these errors are taken care of then this type of system will be used in aircrafts. So currently, the industry is going with the most reliable way to measure the velocity that is pitot tube.

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

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