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

[@anaclaus6504]

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

[@CPPMechEngTutorials]

Glad we could help.

[@AKSHUNAK]

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

[@twinkleupadhyay3098]

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

[@kevinkillsit]

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

[@arjunganesh7319]

🎯 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]

Good bot.

[@ywg5569]

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

[@Steve.Nguyen]

You can find the full course here: kzbin.info/aero/PLZOZfX_TaWAE6nTX50dJl0Jia8iQTIhrG

[@aaronmorgan2475]

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

[@CPPMechEngTutorials]

@@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]

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

[@CPPMechEngTutorials]

@@KunalKumar-sc5kp In the next couple months.

[@ryanhalloran6055]

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]

The videos are now being released.

[@gifs2837]

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

[@eduardotijerina958]

Really good teacher

[@collinskiprono8134]

Thankyou so much professer You are a real gem💎

[@manuboker1]

Thanks ! Wonderful Heat Transfer lectures !

[@biagiogugliotta]

Thank you for the guidance!

[@learnngrow3218]

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

[@learnngrow3218]

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

[@E_Engineering]

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

[@leon6887]

You save my heat transfer!

[@DrDerivative]

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

[@josrodriguez4301]

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]

Should be done by the end of summer 2022.

[@artbybigvee]

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...

[@jessicamaschino1736]

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]

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

[@CPPMechEngTutorials]

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

[@jubairzidan9951]

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

[@etiennekruger]

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

[@amaralhaj1416]

latterly a great teacher thank u Sir.

[@frostbite5937]

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]

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

[@frostbite5937]

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

[@douglasfir1784]

any updates on releasing the updated lectures videos?

[@CPPMechEngTutorials]

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

[@awoldn]

So long to wait for next new video :(

[@CPPMechEngTutorials]

We *hope* Spring 2022, but the pandemic has made things difficult for us to finish this series.

[@awoldn]

@@CPPMechEngTutorials I hope that all will fine.

[@tarifulislam7934]

Any updates about the rest of the convection heat transfer topic?

[@CPPMechEngTutorials]

The rest of the lecture series is in the process of being released.

[@mohammadshahalamhussain.ss3767]

Sir, any similar gud channels to follow...(For mechanical engineer (apart from NPTEL) )

[@tarifulislam7934]

@@CPPMechEngTutorials Ah finally

[@Aurora-pp3cs]

IS THIS THE LAST LECTURE OF THE SERIES?

[@mohammadshahalamhussain.ss3767]

Plz upload next video......

[@CPPMechEngTutorials]

It has been uploaded! :)

[@mohammadshahalamhussain.ss3767]

@@CPPMechEngTutorials entire syllabus(further chapters sir)?

[@adhammorsy1302]

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