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why use solver ode23tb(stiff/TR-BDF2) instead ode45(Dormand-Prince)? Thanks anyway :)

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afiqah cwj
afiqah cwj 2016-12-9
回答： Steven Lord 2016-12-9
Hi.why we use solver ode23tb(stiff/TR-BDF2) instead ode45(Dormand-Prince)? Thanks anyway :)

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回答（2 个）

Star Strider
Star Strider 2016-12-9
In a stiff problem, ode45 just gets stuck and seems to loop infinitely. The choice of ‘stiff’ solver depends on the particular problem.
Steven Lord
Steven Lord 2016-12-9
Take a look at this post from Cleve's blog. If you don't want to read through the whole thing, scroll down to the "Stiffness in action" section where Cleve comments "(If you run only one example, run this one.)" and run that example.

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