Heat transfer forced convection problem

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SUMMARY

The discussion focuses on a heat transfer problem involving forced convection in a 1 cm internal diameter pipe with air flowing at 27°C and 1 atm pressure, with an average velocity of 2 m/s. Participants are tasked with plotting wall temperature (Tw), bulk temperature (Tb), and heat flux (qw) as functions of distance (x) under two scenarios: a constant wall temperature of 68.4°C and a constant heat flux of 378 W/m². The requirement to indicate the exit temperature (x(et)) on the graphs is also emphasized.

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Homework Statement


A flow of air at 27C and 1 atm is hydrodynamically fully developed in a 1c I.D pipe with uav=2m/s. Plot(to scale) Tw,Tb, qw as a function of the distance x after Tw is changed or qw is imposed.
a) in the case for which Tw=68.4 C = constant
b) in the case for which qw=378 w/m^2 = constant
Indicate x(et) on your graphs.


Homework Equations





The Attempt at a Solution

 
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Welcome to the forum.

Here is how it works:

1. Use the homework template, as you have to ask for help with homework questions.
2. Show your attempt to solve the problem, which you have not done.

Show your work and then someone here will help you. Don't just post questions and expect them to be answered for you.

Thanks
Matt
 

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