Heat Conduction with Insulated Ends

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SUMMARY

The discussion focuses on solving a heat conduction problem involving a 100 cm copper rod with insulated ends, where the center is heated to 100 degrees Celsius while the ends are maintained at 0 degrees Celsius. The solution requires applying the heat equation for steady state, specifically the equation \(\frac{d^2T}{dx^2}=0\), and integrating it twice to find the temperature distribution. The problem emphasizes the reflective symmetry of the rod, which simplifies the boundary conditions for solving the equation.

PREREQUISITES
  • Understanding of the heat equation in steady state conditions
  • Familiarity with Fourier Series and its application in heat conduction problems
  • Knowledge of boundary conditions in differential equations
  • Basic calculus skills for integration
NEXT STEPS
  • Study the derivation and application of the heat equation in one-dimensional steady state problems
  • Learn how to apply Fourier Series to solve boundary value problems in heat conduction
  • Explore reflective symmetry in physical systems and its implications in solving differential equations
  • Practice solving similar heat conduction problems with varying boundary conditions
USEFUL FOR

Students studying heat transfer, physics enthusiasts, and engineers involved in thermal analysis or material science will benefit from this discussion.

k.kuhlmann
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Homework Statement


Let the ends of a copper rod 100 cm long be maintained at 0 degrees C. Suppose that the center of the bar is heated to 100 degrees C by an external heat source and that this situation is maintained until a steady state results. Find this steady-state temperature distribution.


Homework Equations


I think this involves the Fourier Series but I'm not sure.


The Attempt at a Solution


I'm not sure how to start it. I haven't seen a problem like this where it is heated from the middle.
 
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Hi k.kuhlmann, welcome to PF!

One way to approach this problem is to use the heat equation for steady state

\frac{d^2T}{dx^2}=0

and solve it (integrate it twice, for example) at either the left or right side of the rod (they're reflectively symmetric, of course) with the temperature boundary conditions that you're given. Does this make sense?
 

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