Different answers each run halving step size, debugging code correctly
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Hello,
I have a code computing a rockets trajectory using Rungekutta. The issue is computing error, I am trying to compute and estimated global error, by comparing two results with different step size. There is a while loop in the code, which halves the step size to compute local truncation error and minimize this. However, I descided to deactivate this, so the issue is not here. I have tried to search trough the code various times, but I can not seem to find an issue anywhere.
Any help is greatly appriciated
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Walter Roberson
2025-1-21
A common error in RK type of calculations is failing to multiply by the step size in all of the appropriate places.
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