Boundary Conditions

[@dkscidmore]

Thank for putting this video up.

[@kenycastro436]

Thank you so much for your help. I have a test today and this will deff be a good help.

[@muralikrisha3610]

The initial temperature of a rod 0 x l thermally insulated along the surface
equals
U0 = const;
and a constant temperature is maintained at its ends
u(0; t) = U1 = const; u(l; t) = U2 = const; 0 < t < 1:
Find the temperature u(x; t) of the rod for t > 0; determine also the steady-state
temperature
u(x) = lim
t!1
u(x; t):

[@muralikrisha3610]

i tried but i did not get the answer
can you help me

[@DarkSlayerphlc]

You are my savior!!!!!!!!!!!!!

[@kimberlyr2289]

At 4:17, why are you using q and not Q? Isn't q heat flux? So shouldn't it be q=-k(dT/dx)?

[@ajaysivaramana5508]

q is not heat flux, it is heat flow rate . Unit of q is watt(j/s). you can use dimensional analysis to check it

[@huttonator95]

what pages in the NCEES reference manual can I find these eqns? I am looking through the thermodynamics and fluid mechanics sections but can't find these equations...

[@corinnevallet1848]

Very easy to follow these lectures, but is it possible to have an order for the heat transfer lectures ? Thanks

[@calebgrant5851]

The "Conduction Equation Derivation" video does a MUCH better job of explaining boundary conditions.

[@hg2.]

i.e. this video sucks? i agree. will try your suggested alternative.

[@catgirlputin3147]

thanks ma'am!

[@rubixcubesolve]

Thank you for video.

[@mohammadshakir6369]

Thanks a lottttt

[@fastertbird]

At 6:54 you seem lost yourself and I really don't follow

[@jessehinshaw]

+fastertbird those were the boundary conditions set for example 2 it is the condition that as X→L The rate of convective heat transfer from the system is equal to the net rate of conductive heat transfer