Very good 👍

Seriously what I have seen in many videos that they lack indepth explanation. Thanks for the complete explanation

Sir after 30 mins. This lecture became super interesting. I understand that first 25 mins. you took just to clear the basic things.

ignore that dislike sir. I am quite certain that the guy hasn't seen this lecture.I have seen and taken a lot of lectures both offline and online and i can bet,there is no faculty out there who can explain these concepts with such ease.🙏🙏🙏🙏 glad you are on KZfaq.

understanding level ...out of the box

Really one of the best lectures on this topic. Really helpful in gaining entire knowledge.

Sir this video is useful even after 1 year From Sri lanka

Great explanation sir,

really this is the best explanation I have ever seen , thank u very much

You are very good sir . I love your method to make us understand . Please make all videos of hydraulic machines

Very many thanks. This is so much more helpful than I've found before (because I was never sure what Vr was relative "to") I think it better to say "B1 is angle between rel. vel and the circumferential velocity, U1". Also it takes a moment to see that V1 is where it is: but the key is always U1: Vr1 is determined as its cosine and V1 as a sin. Presumably this gives a 90 deg position. At 40 min 20 sec, the rel vel is what person the blade sees, namely the water shooting out but being left behind. I still can't get my head around Vf2 - which is a function of exit blade angle and outer diameter - **being equal to V1**. I do understand how "Whirl velocity" arrives as the vector value parallel to U2, because along with Vf2, it equals Absolute velocity, itself determined by U2 and Vr2.

Great explanation,,,, thanks alot

Sir, Thank you so much for this video. Lot of confusions have been cleared.

AWESOME YR MAZA AAGYA THX

Best explanation I've ever seen. Thanks a ton!

Nice presentation and excellent explanation... it will helps to understand easily

Best explanation ever

you are the best one of those to explain the velocity triangle in this subject!! , keep up good job

Thanks sir, Very good explanation.

Nicely explained Sir. Thanks.

you are the best one to explain the triangle in this subject !!!! keep up good job

best explaination ever

Great job sir. I love your lecture sir

Exlent way of teaching.. thank you sir for elaborated concept

its is awesome lecture 10q

pure knowledge!

Nice👌👌

Very nice sir 👍

Perfect explanation

Amazing approach to teach easily.

Nice video..... Sir..

Nice nice 👍🔥🔥

Excellent Explanation. Thank you sir

Esteemed Sir, You have kindly answered some of my questions. I now wish to make a remark: the analysis, historically, came from Turbine design, for "water wheels," when the one thing known, was Flow. So that becomes a starting point in these examples. But **why should we know Flow in advance** for a pump? I think the analysis can be done without this. You would think that a blade cutting water at a certain velocity would have a predicable flow along its surface, as long as rather small angles (eg 10 - 40 deg) were used. It would mean that at Inlet, Rel Velocity would immediately be known and so Radial velocity could be calculated. All else follows. I cannot see any fallacy here-in. [Imagine the blade cutting the water, the water's movement along the blade will be the same as the tangential velocity of the Inlet circle.]

this video helped me understand this chapter. thank you sir

Thank you very much sir

thank you for your patience ! Is ther a video where you explain WHY the absolute inlet velocity ir radial ? Thanks .

Sir, where did u there till now.... Thanks a lot sir... ❤

Thank you prof

U is "given" and Vr is line of blade angle. Draw V normal to U first and *then* show you *always* have a parallelogram. Also, rel velocity *must* be > tangential (=rotational) vel, because it is rotational vel + a radial component.

Awesome

Sir I do not understand one point here how Vr1 and Vr2 are parallel blade surface....... please 🙏 telll

Would love to learn the velocity triangle for axial flow compressor from you....

Thanks sir

Sir is it useful for torque converter

Thank you! Very good explenation. Do you have a patrion or somewhere where I can donate bc this explenation has helped me a lot!

I am still stuck at the outlet! The rel vel (Vr2) is a combination of "you" travelling around, Below the horizon, viewing the water apparently rising outward. So it must be > U2. But if you draw it as such, V2 becomes *same* as a radial flow. But you emphasise otherwise.

What is Vw2?

When you explain the direction of the flow with the water entering hte impaler axially but the vane purely radially, you could maybe reccomend people check out this animation if they dont understand it kzfaq.info/get/bejne/eMd1e7mhsMmRYYU.html, this video has a very nice diagram where they show what you explained there.

Knock me