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A comment on Physics Simulations. Parent comment

Re:Physics Simulations by evanb on Thursday January 04, 2018 @12:32AM (#16068279)
For an accurate double pendulum you almost certainly need a symplectic integrator---not just Euler's method---or risk numerical instabilities that come from nonconservation of energy.
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Re:Physics Simulations by effie on Thursday January 04, 2018 @08:00AM (#16069995)
An integrator that is symplectic or conserves energy isn't necessarily accurate, especially if the dynamical system is chaotic. Can you recommend particular algorithm that is accurate for pendulum or double pendulum?
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