Heat Transfer (23): Convection heat transfer over external surfaces, flat plate analysis

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Күн бұрын

[Timestamps will be added at a later date.]
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.

Пікірлер: 53

@anaclaus6504 3 жыл бұрын

Thank you so much for uploading these videos. You are literally saving my engineering degree. especially now during the pandemic.

@CPPMechEngTutorials 2 жыл бұрын

Glad we could help.

@AKSHUNAK 3 жыл бұрын

Bless you Dr. Biddle and team at Cal Poly Pomona. Thank you.

@twinkleupadhyay3098 3 жыл бұрын

Sir watching from India.. And i liked your way of explanation Thank you so much sir

@gifs2837 Жыл бұрын

amazing lecture, a completely wonderful experience. Here I learned that I haven't learned anywhere else.

@kevinkillsit 2 жыл бұрын

As a former alumni from CPP ME class of '13 thanks for the refresher. 🤘🤘

@ywg5569 3 жыл бұрын

i'm still waitting for the next videos of the course. Thanks for your uploading!

@Steve.Nguyen 3 жыл бұрын

You can find the full course here: kzfaq.info/sun/PLZOZfX_TaWAE6nTX50dJl0Jia8iQTIhrG

@aaronmorgan2475 3 жыл бұрын

@@Steve.Nguyen minor detail. These videos were updated. That playlist consist of the old videos which will be removed.

@CPPMechEngTutorials 2 жыл бұрын

@@aaronmorgan2475 The older series also had some editing errors and does not contain a discussion on natural convection. The current series (when we can finish it) will contain that topic.

@KunalKumar-sc5kp 2 жыл бұрын

@@CPPMechEngTutorials when is the natural convection stuff going to be uploaded? Thanks

@CPPMechEngTutorials 2 жыл бұрын

@@KunalKumar-sc5kp In the next couple months.

@manuboker1 Жыл бұрын

Thanks ! Wonderful Heat Transfer lectures !

@collinskiprono8134 2 жыл бұрын

Thankyou so much professer You are a real gem💎

@leon6887 2 ай бұрын

You save my heat transfer!

@eduardotijerina958 3 жыл бұрын

Really good teacher

@biagiogugliotta 7 ай бұрын

Thank you for the guidance!

@ryanhalloran6055 2 жыл бұрын

Aw I'm so sad as I'm reading the comments and the lectures for convection won't be available till (possibily) spring 2022... now fall 2021, love this professor and thanks so much for uploading. Please get these videos done for all who wished to learn it. I sadly am taking it currently so I can't listen to this gentleman's knowledge.

@CPPMechEngTutorials 2 жыл бұрын

The videos are now being released.

@E_Engineering 11 ай бұрын

Thank you very much sir for this videos it is very enlightening

@amaralhaj1416 2 жыл бұрын

latterly a great teacher thank u Sir.

@learnngrow3218 2 жыл бұрын

please upload the next video lectures....it will be really helpful

@etiennekruger Жыл бұрын

42:11 starts recap on chapters 5, 12, 13.

@artbybigvee 3 жыл бұрын

Thanks very much sir. Please can you give me a link to download TABLE 7.1? I don't have text, I need to print it. Thanks sir...

@arjunganesh7319 8 ай бұрын

🎯 Key Takeaways for quick navigation: 00:15 🔄 Convection heat transfer occurs between a solid surface and a fluid, with fluid movement over the surface. 01:43 📚 Chapters 6, 7, 8, and 9 cover different aspects of convection, with Chapter 7 focusing on external flow over surfaces. 03:37 🌊 The boundary layer near the surface is crucial in convection, transitioning from zero velocity to free stream velocity, influencing shear stress and drag. 08:18 🔍 Laminar boundary layers are considered initially, with equations for mass conservation and X-momentum in the boundary layer discussed. 18:34 ♨️ Heat conduction occurs at the surface of the plate, and the heat carried away by convection is analyzed using Newton's Law of Cooling. 26:51 🔄 The Nusselt number, a dimensionless parameter, is introduced to describe the ratio of convective heat transfer to conductive heat transfer. 34:33 📈 Heat transfer varies along the plate, with the local convection coefficient highest near the leading edge and decreasing along the plate. 39:37 🔄 Analysis focuses on laminar boundary layers, and the importance of Reynolds number in determining laminar or turbulent flow is noted. 40:44 📉 Finding the local convection coefficient and average heat transfer coefficient is emphasized for convection heat transfer analysis. 45:45 ☀️ Review of key concepts in Chapters 5, 12, and 13 includes transient heat transfer using Biot number, radiation laws (Planck's, Stefan-Boltzmann), and emissivity properties. 47:34 🌐 Understanding black-body radiation involves graphs of G Lambda versus Lambda or scenarios like radiation from a room's walls at 300 K. 49:14 🌈 Kirchhoff's laws state that for gray and diffuse surfaces, emissivity equals absorptivity. Understanding parameters like E, J, G, Q double prime net for small objects in large enclosures is crucial. 50:25 📐 In Chapter 13, focus on finding view factors (F) for different geometries using tables and figures. Reciprocity (A_1 F_1,2 = A_2 F_2,1) and enclosure law (sum of F's equals 1) are essential concepts. 52:03 🔄 Utilize symmetry and characteristics of surfaces (plane, convex, concave) to simplify view factor calculations. N-squared view factors for an enclosure with N surfaces. 53:41 📏 Calculate resistances (R) for radiation circuits, considering space resistance (R_1,2) and surface characteristics. Understand the impact of emissivity on resistance. 54:42 🛡️ Know how to use hypothetical surfaces and solve radiation shield problems, as discussed in the last lecture. Review the material on Blackboard for additional examples and clarity. Made with HARPA AI

@CPPMechEngTutorials 8 ай бұрын

Good bot.

@jubairzidan9951 Жыл бұрын

HHi is the full playlist finished or new videos will be uploaded ?

@josrodriguez4301 2 жыл бұрын

Any updates on the continuation of chapter 6 and 7? this has helped me understand a lot better the material being cover in class.

@CPPMechEngTutorials 2 жыл бұрын

Should be done by the end of summer 2022.

@adhammorsy1302 8 ай бұрын

could anyone help me for tell me about this use maps to analyze the ball

@Aurora-pp3cs 2 жыл бұрын

IS THIS THE LAST LECTURE OF THE SERIES?

@DrDerivative 7 ай бұрын

Great video. But the camera man doesnt need to follow you the entire video, give us time to see the equations. Sheesh.

@frostbite5937 3 жыл бұрын

I ask the moderator here if he or she can add more courses for mechanical engineering as ( IC engines course- HVAC course - mechanical design course)

@CPPMechEngTutorials 3 жыл бұрын

We wish we could have more full-length courses. Due to funding and time constraints, we add videos as they are developed.

@frostbite5937 3 жыл бұрын

@@CPPMechEngTutorials Thanks anyway you do great help by uploading these great videos.

@learnngrow3218 2 жыл бұрын

John Biddle sir is GOD. thank you sir & cal poly pomona for everything

@douglasfir1784 2 жыл бұрын

any updates on releasing the updated lectures videos?

@CPPMechEngTutorials 2 жыл бұрын

They are being recorded now and hopefully will be available by the start of F2022

@jessicamaschino1736 2 жыл бұрын

Is there anyway we can get a lecture on free convection heat transfer? I can't seem to find any resources on this topic and would love to see how Dr. Biddle teaches it!

@ryanhalloran6055 2 жыл бұрын

Seconded, I haven't used their older playlist yet but I believe that's the only resource we have as of rn

@CPPMechEngTutorials 2 жыл бұрын

@@ryanhalloran6055 The videos are being uploaded over the next couple weeks.