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one dimensional unsteady heat conduction

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Old   July 10, 2009, 12:26
Default one dimensional unsteady heat conduction
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Vijesh Joshi
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Dear friends,
how to decide time step to solve one dimensional unsteady heat conduction through a slab by implicit scheme ?? I am writing a code in matlab to solve this. I am facing numerical oscillations. Plz help...
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Old   July 10, 2009, 21:22
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You can test your code by marching in time to a steady solution ( for which you can find an exact analytical solution ). Since you use an implicit scheme for your time integration the time step for a steady solution should not be a concern. If your code does not converge to the steady solution you should check again the implementation.
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