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Heat Transfer (13): Transient heat conduction, lumped heat capacity model and examples 

CPPMechEngTutorials
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0:00:16 - Transient heat conduction, lumped heat capacity model
0:12:22 - Geometries relating to transient heat conduction
0:21:07 - Example problem: Copper sphere with transient heat conduction
0:27:21 - Review for first midterm
Note: This Heat Transfer lecture series (recorded in Spring 2020) will eventually replace the earlier Heat Transfer series (recorded in Fall 2015) in a couple years. The old lecture series had some errors and was lower quality.
Want to see more mechanical engineering instructional videos? Visit the Cal Poly Pomona Mechanical Engineering Department's video library, ME Online: www.cpp.edu/meonline​​​​
This lecture series was recorded live at Cal Poly Pomona during Spring 2020. The textbook is "Introduction to Heat Transfer" by Bergman et al.

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22 июл 2024

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Комментарии : 41   
@samokablamo
@samokablamo 2 года назад
This professor is fantastic. I've never gone to this school or had him, I'm just watching his videos to review some fundamentals, and wowwie. Great work, Professor, and thank you.
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
You're welcome!
@riazrafiq8913
@riazrafiq8913 2 года назад
We are really grateful for these educational supplements. We can't express our gratitude in words. Thank you very much.
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
We're glad you found them useful.
@atharvaayanar
@atharvaayanar 10 месяцев назад
I have my midterms tomorrow and these lectures are coming in clutch. Thank you
@CPPMechEngTutorials
@CPPMechEngTutorials 10 месяцев назад
Good luck!
@HuyNguyen-fn7mx
@HuyNguyen-fn7mx 3 года назад
Thank you so much for this, really clear and straight forward
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
Thanks!
@NOKOTSHEHLA
@NOKOTSHEHLA Год назад
Really appreciate the videos. They are comprehensive and concise. From NWU
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
Glad you are enjoying them.
@brendankilleen781
@brendankilleen781 Год назад
This professor is the only reason I understand even the most basic of concepts, I'd have an even worse grade if it wasn't for him.
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
Hooray!
@ALIKN1-1
@ALIKN1-1 Год назад
Legend ….thanks for UOA
@AV-DIN
@AV-DIN 2 года назад
Interesting, can we express (hAs)/(mCp) as 1/(Rtotal*mCp) Where R can be as Rconv+Rcond and how has to be looks Biot number in this case?
@AquibManar
@AquibManar 2 года назад
Good content
@yadhukrishnakyadhukrishnak8550
@yadhukrishnakyadhukrishnak8550 2 месяца назад
It was a nice lecture
@hemant05
@hemant05 2 года назад
Thanks!
@sourabhhanje6724
@sourabhhanje6724 2 года назад
This guy is amazing. If you are from some famous college in Mumbai , say Hii
@AkshatJainmeb
@AkshatJainmeb Год назад
why does the graph for exp have an inflexion why does it not look exp(-x) type
@abdulhadimalik9753
@abdulhadimalik9753 Год назад
i like that person much he is fantastic
@aakarshankhanal8227
@aakarshankhanal8227 Год назад
Can anyone provide me w the mid term questions?
@josephdurso5175
@josephdurso5175 4 месяца назад
In the energy balance why is energy generation subtracted? Shouldn’t it be added? Anyone care to weigh in and lmk?
@ryanhalloran6055
@ryanhalloran6055 2 года назад
Is the h, in this example given? I don't see it in Appendix A.1.
@nicklarosa3816
@nicklarosa3816 2 года назад
my question as well..
@nirajneupane4549
@nirajneupane4549 Год назад
yeah h should be given. value of h is not given in appendix. if value of h is not given you need to find h yourself. for that you will need nusselt number.
@kusoe2020
@kusoe2020 5 дней назад
Look at 10:30 to understand graph. Also see 26:00 to understand something better. (VVI)
@yossefatia3536
@yossefatia3536 Год назад
In Copper sphere example how was h obtained? How do you find h in general I assume you need tables with a few properties. Thanks
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
Convection coefficients are discussed in later lectures.
@laasd1613
@laasd1613 4 месяца назад
At 23:16, how does he know that h is equal to 25?
@ThePineapple3112
@ThePineapple3112 4 месяца назад
it's in the problem statement, he just didn't specify it earlier
@evaristogabriel8208
@evaristogabriel8208 2 года назад
shouldn't Bi be much greater than 1 to use the lamped capacitance method
@triambakeshwar8766
@triambakeshwar8766 Год назад
Nope, you use Hiesler's charts then. For less than 0.1, LCM. For greater than 100, error function method.
@rockyroad179
@rockyroad179 Год назад
13:40
@husseinaldebes3268
@husseinaldebes3268 2 года назад
how could L sub c (volume to surface area) of a cylinder == radius/2 !!! its unverified
@azurqasm2746
@azurqasm2746 2 года назад
I believe it's for slender (very long compared to their diametres) cylinders, where r is not that long compared to l? That simplifies the characteristic length to roughly r/2.
@mechanicalkiller1061
@mechanicalkiller1061 Год назад
perfect, but i wish if you solve harder problems LUAI 6 NOV.2022 ME 315 | M II B#63
@nicknimmer9574
@nicknimmer9574 Год назад
I hope in the future yall would get some people who can work a camera correctly and give the person watching the video time to write down what is being said or was just written. Having to stop every few seconds gets annoying and makes me lose my train of thought and ability to focus on whats being taught. We do not need to see the professor walk from one side of the room to the other explaining things while drinking coffee. Please in the future find better people to operate the cameras.
@CPPMechEngTutorials
@CPPMechEngTutorials Год назад
We gave the camera operator this feedback. Later videos don't have this issue.
@cotynorcross1822
@cotynorcross1822 25 дней назад
what a cry baby lol go back to chegg
@fathoniam8997
@fathoniam8997 Год назад
the cameramen really made me angry...
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