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

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  • Опубликовано: 25 авг 2024

Комментарии • 53

  • @anaclaus6504
    @anaclaus6504 3 года назад +29

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

  • @AKSHUNAK
    @AKSHUNAK 3 года назад +9

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

  • @twinkleupadhyay3098
    @twinkleupadhyay3098 3 года назад +5

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

  • @ywg5569
    @ywg5569 3 года назад +5

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

    • @Steve.Nguyen
      @Steve.Nguyen 3 года назад +1

      You can find the full course here: ruclips.net/p/PLZOZfX_TaWAE6nTX50dJl0Jia8iQTIhrG

    • @aaronmorgan2475
      @aaronmorgan2475 3 года назад +1

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

    • @CPPMechEngTutorials
      @CPPMechEngTutorials  3 года назад +2

      @@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
      @KunalKumar-sc5kp 2 года назад

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

    • @CPPMechEngTutorials
      @CPPMechEngTutorials  2 года назад

      @@KunalKumar-sc5kp In the next couple months.

  • @kevinkillsit
    @kevinkillsit 2 года назад +2

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

  • @gifs2837
    @gifs2837 Год назад

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

  • @ryanhalloran6055
    @ryanhalloran6055 2 года назад

    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.

  • @collinskiprono8134
    @collinskiprono8134 2 года назад +1

    Thankyou so much professer
    You are a real gem💎

  • @manuboker1
    @manuboker1 Год назад

    Thanks ! Wonderful Heat Transfer lectures !

  • @leon6887
    @leon6887 3 месяца назад

    You save my heat transfer!

  • @biagiogugliotta
    @biagiogugliotta 9 месяцев назад

    Thank you for the guidance!

  • @E_Engineering
    @E_Engineering Год назад

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

  • @arjunganesh7319
    @arjunganesh7319 9 месяцев назад

    🎯 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

  • @eduardotijerina958
    @eduardotijerina958 3 года назад

    Really good teacher

  • @learnngrow3218
    @learnngrow3218 2 года назад

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

  • @amaralhaj1416
    @amaralhaj1416 2 года назад

    latterly a great teacher
    thank u Sir.

  • @learnngrow3218
    @learnngrow3218 2 года назад +1

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

  • @artbybigvee
    @artbybigvee 3 года назад +1

    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...

  • @awoldn
    @awoldn 3 года назад +2

    So long to wait for next new video :(

    • @CPPMechEngTutorials
      @CPPMechEngTutorials  3 года назад +3

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

    • @awoldn
      @awoldn 2 года назад

      @@CPPMechEngTutorials I hope that all will fine.

  • @etiennekruger
    @etiennekruger Год назад

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

  • @frostbite5937
    @frostbite5937 3 года назад +3

    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
      @CPPMechEngTutorials  3 года назад +8

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

    • @frostbite5937
      @frostbite5937 3 года назад +5

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

  • @adhammorsy1302
    @adhammorsy1302 9 месяцев назад

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

  • @jubairzidan9951
    @jubairzidan9951 Год назад

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

  • @DrDerivative
    @DrDerivative 8 месяцев назад +3

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

  • @jessicamaschino1736
    @jessicamaschino1736 2 года назад +2

    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
      @ryanhalloran6055 2 года назад +1

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

    • @CPPMechEngTutorials
      @CPPMechEngTutorials  2 года назад

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

  • @douglasfir1784
    @douglasfir1784 2 года назад

    any updates on releasing the updated lectures videos?

    • @CPPMechEngTutorials
      @CPPMechEngTutorials  2 года назад

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

  • @josrodriguez4301
    @josrodriguez4301 2 года назад

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

  • @Aurora-pp3cs
    @Aurora-pp3cs 2 года назад

    IS THIS THE LAST LECTURE OF THE SERIES?

  • @tarifulislam7934
    @tarifulislam7934 2 года назад

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

  • @mohammadshahalamhussain.ss3767
    @mohammadshahalamhussain.ss3767 2 года назад

    Plz upload next video......