Introduction to Fluid Machines and Compressible Flow by Prof. S.K. Som,Department of Mechanical Engineering,IIT Kharagpur.For more details on NPTEL visit nptel.ac.in
I think its only in INDIA that such a worderful engineering videos are present for every topic in the WORLD. thanks a lot for your hardwork to explain us in FREE OF COST. Otherwise there r so many institute earning chunks of money just by providing same concepts.
When u compare it with gas turbines text book ..u vl come to know how simply professor is explained complexe concepts.... thanks for the tutorial sir!!
That is the best explanation of axial compressor theory I have ever seen: so logical, clear and well presented! I don’t think I have ever understood it as well as I do now, having watched this lecture. It is a real privilege to receive such clear instruction from someone who really understands the topic.
yup and that was what he was doing for this lecture ... he missed that explanation because he didnt create a format to teach it in he just wung it for the video ... and it showed ... he didnt even follow his own conventions nor did he actually drawe the vectr diagrams to his conventions ... he taught the right stuff in screwy order ..., add to that his poor english ... wargdone .factor ... until he scribbled it down I didnt know he was saying work done factor ... not to mention not even keeping his equations the same .. he swapped alph and beta without proving they were equal that way as well ... he showed the solved version of a1 -a2 and b2-b1 were but that doesnt prove the other way around either ... he didnt have notes to follow he went off the top of his head and screwed it up often ... thats why he had to repeat things so often he kept catching his blunders ...
Thank you Prof S.K.Som, but there is soeting I don't understnd. Because of compression, you nede a smaller angulus area from stage to stage, because of constant axial speed. O.K. But why do you use diffusorblades in te stator for expanding the anulus area aain to reduse speed. for me, this is a discrepance. Or is this an additional method to gain higher pressure values, reducung the tangetial speed component? Thank you in advance to help me understanding . Thank you so much.
lecture NOTES are your friend ... use them ... then you dont make errors as you drop things out of your brain and into your mouth ... knowing the subject is one thing teaching the subject means you have to relate your knwoledge in a way that follows logically and does not jump back and forth and into things you havent even covered or mentioned ... such as at the start when he saw the rotor blades direction of motion he said that vector was not supposed to be there ... YES it is ... it is what the rotor does it converts incoming air pressure into work on the rotor compressing the air and it is how you get the actual velocity component and the apparent work velocity ... V is the right angle ... created with alpha and beta when drawn to line U ... Work of Beta + velocity of Alpha = U or total work done on the system ... tan needs opposite and adjacent sides to figure out an answer ... the cos is used when you have the adjacent an the angle and want the hypotenuse . V cos Alpha or V cos Beta either gives the U value for their given angle ... and sin is used when you have the U value and the angle of the vector ... or Usuba sin Alpha or Usubb sin Beta ... tan is only usefull when you know V U or the angle ... any two of those you can find the third ... which would be tan angle = U / V
"Why they have made a flow direction like that? I don't understand" 9:43. If professor says O.K. and then takes a short time, that means something has gone wrong.
He just teach like robot....with expressions and expressions ..........those who r keenly interested to understand the concept or those who has pressure of exam so only they can absorb this 53 min...if someone just come with fun mood to learn about axial flow compressor this lecture cant create interest in him..........
I think its only in INDIA that such a worderful engineering videos are present for every topic in the WORLD. thanks a lot for your hardwork to explain us in FREE OF COST. Otherwise there r so many institute earning chunks of money just by providing same concepts.
Indeed
دج دج
حد
thank you som sir for ur passion and dedication towards students.
very well explained the content with in limited hour.
If I'll get my mechanical engineering degree, I will put tape on my institution's name and write NPTELHRD on it. Thank you for these quality lectures.
Did you get it?
Have you got your degree? If so, have you replaced the institution's name with NPTELHRD? Looking forward to your reply
When u compare it with gas turbines text book ..u vl come to know how simply professor is explained complexe concepts.... thanks for the tutorial sir!!
He is the best, I love this guy... Too good,how thankful I am to this guy...
Thanks a lot sir
"God of mechanical engineering"💐
Sir May God give you eternal peace in the heaven 🙏, you are the best teacher
That is the best explanation of axial compressor theory I have ever seen: so logical, clear and well presented!
I don’t think I have ever understood it as well as I do now, having watched this lecture. It is a real privilege to receive such clear instruction from someone who really understands the topic.
Excellent Explanation...
Thanks Sir
Sep'21, 2023 06:58 pm
Apke bina hmara kuch na ho pataa sir 😍
Thanks a lot sk som sir for providing such kind of conceptual teaching.
Thank u for this awesome explanation!!!!
Great explanation, thank you.
thank you sir these lectures are helping us students a lot
Apart from all hicups while explaining, ut is better then all. Thanks sir
Easy and excellent Explanation
thank you sir for this valuable lecture.....
Very nice explaination sir.... Thanks a lot
Very very good explanation sir 🙏👏
Thanks
i didn't find this video in nptel channel of mechanical engg fluid mechanics
Thak you sir for helping us.
way better explanation than my professor
Excellent
Sir,the arrow in the rotor section is showing the engine's direction of rotation
Even iit has this kind of complexions .. diagram is different ... funny 😂 at 9.43
Sir u didn't explain what is relative velocity, Absolute velocity, flow velocity and whirl flow
yup and that was what he was doing for this lecture ... he missed that explanation because he didnt create a format to teach it in he just wung it for the video ... and it showed ... he didnt even follow his own conventions nor did he actually drawe the vectr diagrams to his conventions ... he taught the right stuff in screwy order ..., add to that his poor english ... wargdone .factor ... until he scribbled it down I didnt know he was saying work done factor ... not to mention not even keeping his equations the same .. he swapped alph and beta without proving they were equal that way as well ... he showed the solved version of a1 -a2 and b2-b1 were but that doesnt prove the other way around either ... he didnt have notes to follow he went off the top of his head and screwed it up often ... thats why he had to repeat things so often he kept catching his blunders ...
God
came here for a simple question, stayed here for the extra knowledge
Yours obediently
Zahid Farhan
7/04/2024
❤❤❤
Can you please explain why learning this would help us in our lives?
Thank you Prof S.K.Som, but there is soeting I don't understnd. Because of compression, you nede a smaller angulus area from stage to stage, because of constant axial speed. O.K. But why do you use diffusorblades in te stator for expanding the anulus area aain to reduse speed. for me, this is a discrepance. Or is this an additional method to gain higher pressure values, reducung the tangetial speed component?
Thank you in advance to help me understanding . Thank you so much.
Prof SK Som is no more ! :(
@@vardhanshah5283 That's very sad. I enjoyed his lessons very much.
44:00
lecture NOTES are your friend ... use them ... then you dont make errors as you drop things out of your brain and into your mouth ... knowing the subject is one thing teaching the subject means you have to relate your knwoledge in a way that follows logically and does not jump back and forth and into things you havent even covered or mentioned ... such as at the start when he saw the rotor blades direction of motion he said that vector was not supposed to be there ... YES it is ... it is what the rotor does it converts incoming air pressure into work on the rotor compressing the air and it is how you get the actual velocity component and the apparent work velocity ... V is the right angle ... created with alpha and beta when drawn to line U ... Work of Beta + velocity of Alpha = U or total work done on the system ... tan needs opposite and adjacent sides to figure out an answer ... the cos is used when you have the adjacent an the angle and want the hypotenuse . V cos Alpha or V cos Beta either gives the U value for their given angle ... and sin is used when you have the U value and the angle of the vector ... or Usuba sin Alpha or Usubb sin Beta ... tan is only usefull when you know V U or the angle ... any two of those you can find the third ... which would be tan angle = U / V
great
"Why they have made a flow direction like that? I don't understand" 9:43. If professor says O.K. and then takes a short time, that means something has gone wrong.
he made because it is intuitional
RIP
Sir please give me material soft copy
"Why they have made a flow direction like that? I don't understand" @9:43. I think that marks the direction of rotor motion.
yes i think the same way
Direction of U
Worst fellows who dislike this video
He just teach like robot....with expressions and expressions ..........those who r keenly interested to understand the concept or those who has pressure of exam so only they can absorb this 53 min...if someone just come with fun mood to learn about axial flow compressor this lecture cant create interest in him..........
Why do people from India comment sir on every video with an Indian??
with due respect. the explanation is bit absurd.
i can't understand a damn thing he said....
wtf?
+Kevin Johnson His accent is indian... maybe that's why. The lecture is great though
You should have your ears checked then. I'm not a native speaker and I understood his English easily.
its okay if u r frm iit but just dont show offfff _____I______