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FourierFlows / FourierFlows.jl

Tools for building fast, hackable, pseudospectral partial differential equation solvers on periodic domains
https://bit.ly/FourierFlows
MIT License
202 stars 29 forks source link

Adaptive time-stepping #134

Open navidcy opened 4 years ago

navidcy commented 4 years ago

It would be very nice if we could do that. How feasible is it? Or course it would, in practice, only work with the explicit one time-steppers (ForwardEuler, AB3 and RK4)

glwagner commented 4 years ago

We can implement it with every stepper, though as you allude to changing the time step in ETDRK4 would require recomputing coefficients. I suppose what we need is to design a flexible abstraction that works for many types of problems.

dkarrasch commented 4 years ago

Have you considered OrdinaryDiffEq.jl for time-stepping? They have many solvers with adaptivity, and some with GPU-compatibility, though I haven't kept myself up-to-date recently.