Super simple temperature test. 38.6% error. Do you know why?

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raback
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Re: Super simple temperature test. 38.6% error. Do you know why?

Post by raback »

Hi

More accurate space and time rosolution will give more accurate results. Both are needed. I cannot comment on some random sampling with time only. I would say that this module has been pretty solid for long time and it would take some convincing to doubt the results.

-Peter
kevinarden
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Re: Super simple temperature test. 38.6% error. Do you know why?

Post by kevinarden »

These are the results, expected delta T is 0.24 (perhaps this is incorrect).
At zero initial condition the result is always 0.24 regardless of time step, BCs, or mesh
At 273 initial condition the results lower with finer time step regardless of mesh or BCs, it converges at 0.167
perhaps at 0 IC the expected result should be 0.24 and at 273 the expected result is 0.17, but what causes the difference?
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