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Design of optimal Runge-Kutta methods - FEniCS Project

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Strong stability preservation<br />

<strong>Design</strong>ing fully-discrete schemes with strong stability properties is<br />

notoriously difficult!<br />

Instead, one <strong>of</strong>ten takes a method-<strong>of</strong>-lines approach and assumes explicit<br />

Euler time integration.<br />

But in practice, we need to use higher order <strong>methods</strong>, for reasons <strong>of</strong> both<br />

accuracy and linear stability.<br />

Strong stability preserving <strong>methods</strong> provide higher order accuracy while<br />

maintaining any convex functional bound satisfied by Euler timestepping.<br />

D. Ketcheson (KAUST) 22 / 36

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