Lecture Series on Heat and Mass Transfer by Prof. S.P.Sukhatme and Prof. U.N.Gaitonde, Department of Mechanical Engineering, IIT Bombay. For more details on NPTEL visit nptel.iitm.ac.in
Пікірлер: 105
@HoldemPro0911 жыл бұрын
This guy is so much easier to listen to than my heat transfer professor
@sohamkulkarni72073 жыл бұрын
There was a time when you used to get admission to MIT with just a recommendation letter from this guy
@prateekshivhare72453 жыл бұрын
kya baat kr rhe ho bhai
@swagotosurjodutta73413 жыл бұрын
@@prateekshivhare7245 doctorate overseas krne ke liye, college ke experienced professors ka recommendation letter lagta h.
@tequilajoe5183 жыл бұрын
He did his PhD from MIT in the year 1964.
@aryanraval110 Жыл бұрын
@@tequilajoe518 does he still teach?
@sayvishhvlogs186 Жыл бұрын
@@aryanraval110 he is just God Level
@RITESHKUMAR-ou5wu5 жыл бұрын
Watch at 1.25x speed...it's perfect
@nishant9478nl3 жыл бұрын
I did at 2x
@periyasamym18964 жыл бұрын
i feel fulfilled in all categary of your lecture sir. My mind experienced that your lecture is a benchmark for HMT. thank you sir
@divyarao90204 жыл бұрын
Thankyou very much sir! The way the subject is taught here clears concept from basic like no other!
@Modernman1000011 жыл бұрын
thank you , you make it so easy.from algeria
@Skeptik751022 жыл бұрын
In thermal Resistance of an infinite Composite Slab we used t1-tw1 for first case while applying Newton law of cooling but according to the law it's Tw-tf so why we used t1-tw1 here ??
@vishalroadways77008 жыл бұрын
please give us content covered in the video into discription (i.e. name of the topics)
@SauravParle8 жыл бұрын
watch at 1.5x speed
@GENIUSAMI1005 жыл бұрын
already watching at 2x :D
@Pandit.Kamshi8 жыл бұрын
We want better resolution like 480p and above for more picture clarity
@chaosui31698 жыл бұрын
that would be great
@TheSharmaFilms7 жыл бұрын
Bajoy kamshi donate a nice camera to the IITB
@harshtiwari4912 жыл бұрын
Sir I understood cylindrical heat conduction very well.. But the area is missing here in overall heat transfer coefficient.Anyone who can solve my doubt is welcome here
@23youwatch12 жыл бұрын
amazing! Dr. S! U the man!
@7oota200715 жыл бұрын
THANK YOU SO MUCH . that helped alot. ill be watching all of ur lecturs
@jeet140211 жыл бұрын
thank you sir for making conduction derivations so easy
@naikganesh5677 Жыл бұрын
k = 0.58 W/mK here thermal conductivity is in K and T is taken in degree celsius?
@maxlav7426 жыл бұрын
!thank you NPTEL and prof. S.P.Sukhatme I own your lactures at least 2 university courses keep up the good work!
@RizwanAbdul295 жыл бұрын
How did you put 1/Uri for overall heat transfer coefficient for hollow cylinder, it must be simply Uri isn't? Please tell me sir.. at 50:30
@SunilYadav-ks7ww6 жыл бұрын
Great talent to express knowledge
@shreejishah72568 жыл бұрын
thank you very much sir for simply undesting of conduction as easy as possible and plzz yarr improve quality of video 420p or more plzz..
@aaminahrabaab6354 жыл бұрын
Sir I would like to know how we arrived at the thermal resistance (1/hA) for heat flow from surface to fluid? From Newton's law of cooling.
@doinggood35644 жыл бұрын
Generally , by MOLECULAR TRANSPORT EQUATION RATE = DRIVING FORCE / RESISTANCE for our case of heat flow from wall to fluid...(newton's law of cooling) is q = h A ( T of wall - T of fluid ) 《1》 Here, DRIVING FORCE = temperature difference RATE = q We want RESISTANCE to heat flow.... Then RESISTANCE = DRIVING FORCE / RATE.... by 《1》 1/ hA = temp diff / q Therefore, we get R = 1 /hA...
@SPravinth2 жыл бұрын
Sir i think you have missed the unit conversion from cm to meter and celsius to kelvin while substituting the values of temperature and radial distances @21:56... Since the thermal conductivity is in w/mK....
@anandpanchal57177 жыл бұрын
Better if available in good quality 480 or 720p
@dynamo-gaming43396 жыл бұрын
sir anyone please help,,,if q is same every where then how we get two temperatures at two ends i.e, T1 and T2
@hafed40413 жыл бұрын
THANKYOU VERY VERY VERY SO MUCH . to helped me alot ,and the great explanation . I will be watching all of your lecturs
@Manish_saroha3 жыл бұрын
watching in 2021, better than online classes of any institution
@asadali-ht4gr7 жыл бұрын
Pure concepts... Thank you Sir.
@manoj222329 жыл бұрын
thank u sir.. this video was very helpful
@tanvirahamed94329 жыл бұрын
thanks sir.. this video was very helpful my amie engineering
@AniketKumar-wo5te5 жыл бұрын
Professor, I think you forget to convert the given temperature unit into Kelvin. Because, K (thermal conductivity ) is in Kelvin as per the question.
@shubhamkumarsingh73715 жыл бұрын
It's temperature difference, so not a problem
@ThabangSelota12 жыл бұрын
wow this is awesome, i may not attend lectures anymore...lol.
@purushothamtheegala13 жыл бұрын
THANKYOU VERY VERY VERY SO MUCH but i want some value that is what is lenth of the hollow sphere 2 PI L K --------L?
@-Shabareeshku2 жыл бұрын
How can I find that q in problem Is there any length value
@strugglingshorts67603 жыл бұрын
Sir my question is why heat flows normal to the surface....
@adityaanand50313 жыл бұрын
Because we are talking about temperature gradient in only one direction. Otherwise heat can flow in any direction.
@NUPUR-t3e2 жыл бұрын
Good question, Because as soon as heat is conducted there is net transport of molecular kinetic energy along normal direction in a material from surface....So it is always normal to the isothermal planes so that temperature gradient forms to propagate it. It may be 2 or 3 dimensional depends upon the combined effect of thermal conductivity & temperature gradients. Though you apply the heat flux from any direction but at or from interface boundary it flows normally..... The fundamental law of transfer under potential gradient is always transport normally though the flux may or may not aligned with normal but as soon as it crosses the interface of the domain under study there is the flux normal to the interface...... Then be it - Darcy's law of - Fluid flow under pressure difference, Ohm's law of current flow under voltage difference, Fourier's law of this heat transfer under temperature gradient & Fick's law of mass flux transport under concentration gradient..... When there is transport flux across the interface, it always normally in or out of it.......
@Rohit104-s7b3 ай бұрын
Thank you sir 🙏
@gagan...28465 жыл бұрын
Thanks sir ,lecture is very good
@surendraalapati57694 жыл бұрын
for sphere problem, Iam getting 437.3 w instead of 4.37 w .. can you help me anyone?
@g.nirmalkumar57734 жыл бұрын
Convert Cm to Meters
@murali2196811 жыл бұрын
nice lecture
@manvendrapratap706211 жыл бұрын
thanks a lot
@jatinkaul54886 жыл бұрын
wow.. u are great
@jaypatelpatel73735 жыл бұрын
THANKU SIR FOR YOUR LECTURES
@sebamtorres14 жыл бұрын
great explanation. thank you very much
@shyamsunder81338 жыл бұрын
for hallow sphere whats the formula.and wher the l gone in dat formula give me the answer sir
@DevKartikSharma8 жыл бұрын
+Shyam Sunder formula you get is q= -k(T2-T1) x ((4* pi * r1r2)/(r2-r1)) you get this from the expression of fourier's heat flow of conduction q x integrating from r1 to r2(1/(4 pi r^2))= -k x integrating from T1 to T2(dT)
@shyamsunder81338 жыл бұрын
thanx buddy...
@DevKartikSharma8 жыл бұрын
No problem. All the best for hmt
@jaydeepn726010 жыл бұрын
very nice... thank you sir ...!!!
@suryakanthjadhav27338 жыл бұрын
no audio what to do ?? please help me...
@TheSharmaFilms7 жыл бұрын
Suryakanth jadhav turn on your speaker
@excitedinspired99397 жыл бұрын
some lectures are not audible in my computer speaker but its ok on the smartphones.
@murali2196811 жыл бұрын
very nice lecture
@1Bored312 жыл бұрын
Is this in a playlist? I can't seem to find it :<
@mro20385 жыл бұрын
I was about to give you the link for the playlist, but then i checked the date of the comment its 7yrs old XD.
@SUPERMAN-ef8gh4 жыл бұрын
@@mro2038 😂😂😂😂😂ab tak to iski shadi bhi ho gyi hogi
@Rajnishkumar-fq4pg4 жыл бұрын
@@SUPERMAN-ef8gh 2 3 bache bhi ho gye honge
@abhijeetdewangan69334 жыл бұрын
now it's 8 years old comment.
@pythongaming17753 жыл бұрын
@@SUPERMAN-ef8gh 😂
@adarshgupta92729 жыл бұрын
gr8 video sir
@SunilYadav-ks7ww6 жыл бұрын
Great
@dynamo-gaming43396 жыл бұрын
can anyone tell the expression of Ur3
@ItsEshan3926 жыл бұрын
i want to know that too
@AchiragChiragg5 жыл бұрын
@@ItsEshan392 just multiply the Right hand side by r3/r1. And you'll get it in terms of Ur3
@pratap4net5 жыл бұрын
thank you sir
@gagan...28465 жыл бұрын
I watch it on 2x speed cool
@shanmukh11111 жыл бұрын
i'm getting 8.75 instead of 4.35 @24:54
@ameya23106 жыл бұрын
dia to radii
@shreyastaware5 жыл бұрын
@@ameya2310 Thanks
@alanoropeza47615 жыл бұрын
@@shreyastaware jajajaja thanks XD
@vloggie4u5 жыл бұрын
Thnx sir
@anandmaurya35456 жыл бұрын
Is conduction is possible in fluids.
@moalotaibi60026 жыл бұрын
Yes, Conduction is possible in Fluids in case that fluids are stationary such as hot water in a cup.
@NUPUR-t3e2 жыл бұрын
Yes. But following conditions - 1. Fluids are completely at rest & no relative motion exists either relative to any solid interface or within its own layers. 2. Convective heat transfer coefficient is very low & also radiation effects are such that they themselves are acting like non participating & solid to solid interface gap is very small. 3. They should have at least sufficient thermal conductivity for heat to pass or conduct through them. Their area of exposure should also be small. All these parameter should give overall trivial effect of some finite but very low thermal resistance. Otherwise, instead radiation will dominate.
@pythonanimalia10 жыл бұрын
thanks sir...
@44204420112 жыл бұрын
thank u
@Spiritual000.2 жыл бұрын
🙏🙏🙏🙏
@hardipsinhvansadiya33557 жыл бұрын
to good
@sikanderpalsingh5410 жыл бұрын
thank you sir
@oldpretoriagmailcom11 жыл бұрын
I am from India
@sambhuudayakumar94155 жыл бұрын
Im from mars
@adityajha27334 жыл бұрын
@@sambhuudayakumar9415 😂😂 I'm from ngc11
@-Shabareeshku2 жыл бұрын
Problem1
@rksinghtry12 жыл бұрын
he is skipping the derivation part, pretty bad Mr. Sukhatme :(
@abhilashapareek44496 жыл бұрын
Tooo tooo tooooo slow. I am bored. Please write fast or draw fast. Engg. students are able to grasp if the pase is fast.
@abhijitshinde12635 жыл бұрын
How about you play it fast. Speed at x1.5 recommended., x2 if you can understand anything at this speed