this is such a great series. cant say enough how great it is to have these resources during this time of online learning
@CPPMechEngTutorials3 жыл бұрын
We live in amazing times.
@jasonbenny5118 Жыл бұрын
am regreting this why i didnt give much attention to this channel, i would have toped my class. but not too late, hope to learn more from you guys. hey! my man behind the lens bro you are legend, man! love you
@CPPMechEngTutorials Жыл бұрын
It's never too late. :)
@learnngrow32182 жыл бұрын
Grateful to God to provide such world class lesson's from a world class teacher. Inexpressible in world's Long live sir ❤️ May God bless you with everything ❤️
@mustafaenesyaldiz2 жыл бұрын
Hey we use Af for (2wLc+2tLc) but in the book( incropera) it shows only 2wLc. Which one is correct ?
@shopeekoin72933 жыл бұрын
I think the requirement to using case D (Infinite length) is when ml>2,65
@nicklarosa38163 жыл бұрын
mL or mL_c? he said mL_c >= 2.65 but then in calculation he used L?
@trustmeiworkhere81832 жыл бұрын
I too am wondering abour the mL>2.65 vs mL
@trustmeiworkhere81832 жыл бұрын
Okay I found a textbook that says "mL (not L_c) >=3 is sufficient for the infinite fin approximation." So his original statement of mL >= 2.65 is correct. Also, the A in the m equation is always the cross sectional area of the fin. I thought it might be useful to know that, as I find I get all these areas mixed up.
@Rback189 Жыл бұрын
Yes. He makes this correction at the start of next lecture.
@Rback189 Жыл бұрын
@@trustmeiworkhere8183 L_c is for adiabatic fin tip - tip area not included in heat loss calc.
@fuji41285 ай бұрын
thank you so much for your work prof John Biddle. why wasn't the profile area of the triangular fin included in the Area of Af ? dividing over w then would leave you with a w in the denominator of the profile Area term. can someone please elaborate on this?
@kingaegon37156 ай бұрын
at 34:25 shouldn't the sqr root be applied only to the parenthesis? (and not to the number 2 that is multiplying it? (explanation: the sqr root comes from Pythagoras s equation to get the hypotenuse and then since we have two surfaces we multiply the result by 2)
@henrique_vidal6 ай бұрын
Yes, i agree with you
@MrSun-th1qw3 жыл бұрын
At about 34:13. When you calculate A_f, don't you need also consider the sections front and back? You just got the the area of top and bottom. cause front and back are touching the air as well...... what do you mean?
@jay.jay.2 жыл бұрын
I'm struggling to understand how to calculate the Af (the one you mentioned in this comment). For example, for shapes rectangular or for square
@MrSun-th1qw2 жыл бұрын
@@jay.jay. Hi, Jaylane, Af is nothing but the surfaces that interact with the air. You'd better think the problem in 3D in your mind. So, ex) rectangular is consist of 4 faces which touch the air. As you know the dimensions of those parameter, it is easy to get Af. Hope that helps you bit.
@nurmuhammadsumon27292 жыл бұрын
@@MrSun-th1qw shouldn't we consider the area of the fin tip?
@S.emredal Жыл бұрын
@@nurmuhammadsumon2729 for the corrected length, you don't need to think area of the fin tip. It is assumed to be adiabatic. However, I still have a confusion about the triangular fin part. Why don't we include the front and back areas? Maybe, they aren't included because these areas are too small and are negligible for very thin fin
@dorukozcan39415 ай бұрын
Hello, while all four faces that touch the air are included in the rectangular adiabatic tipped fin area calculation, why are only the faces above and below in the triangular fin included in the fin area calculation? Also, according to Table 3.5, the adiabatic tipped fin's area should be calculated by 2 * w * L_c.
@inkitrajmahat68393 ай бұрын
In previous lecture 8 you said ml should be greater than 2.65 but in this numerical the condition is different why is it so?
@georgekaras71623 жыл бұрын
Im not sure but I think at 33:52 the 2 on the left should not be inside those brackets to be square rooted
@ProfessorGreen9003 жыл бұрын
You are right. I agree with you.
@MrSun-th1qw3 жыл бұрын
u r right, got the same question. but it's obviously false.
@peemsam3 жыл бұрын
You are right. It was corrected see the Video Notes
@s.n32432 жыл бұрын
شكرا
@devansh47627 ай бұрын
Can anyone tell me which book is he refering to?
@isabellacarlo7 ай бұрын
"Introduction to Heat Transfer" by Bergman et al. (from video description)
@hishamsalameh57509 ай бұрын
What a great effort But why doesn't our beloved professor go into some topics that are mentioned in the textbook like The fin effectiveness or the critical radius in chapter 3 Or heat heat generation???
@CPPMechEngTutorials9 ай бұрын
There are a limited number of class sessions, so not every topic in the book can be covered.
@hishamsalameh57509 ай бұрын
@CPPMechEngTutorials is what he focuses on and explains the applied science in real-life problems ???? In other words, what he didn't demonstrate is not important
@raymundoloera9 ай бұрын
I would say it everything in the book is important but again Heat Transfer is a complex topic and takes lots of learning I say if this is your first time taking H.T stick to these fundamentals and still invest your own time to learn other more about the topic if you see yourself doing this for you career@@hishamsalameh5750
@ikotnasibsimanullang3 жыл бұрын
I'm from Indonesia and I like study Fisics.
@sadikurrahmanshohan82173 жыл бұрын
I wonder! Joe Biden is taking Mechanical Engineering class!!