High order, semi-implicit, energy stable schemes for gradient flows

24 Jul 2020  ·  Zaitzeff Alexander, Esedoglu Selim, Garikipati Krishna ·

We introduce a class of high order accurate, semi-implicit Runge-Kutta schemes in the general setting of evolution equations that arise as gradient flow for a cost function, possibly with respect to an inner product that depends on the solution, and we establish their energy stability. This class includes as a special case high order, unconditionally stable schemes obtained via convexity splitting... The new schemes are demonstrated on a variety of gradient flows, including partial differential equations that are gradient flow with respect to the Wasserstein (mass transport) distance. read more

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Numerical Analysis Numerical Analysis