A Primer on Higher-Order Elements

"the ability to use a coarser grid to get the same level of accuracy"

Why use higher-order elements? Not only do they pose challenges for visualization, as noted in the previous issue, they are far from being common-place. Read this article for an answer. Most users are restricted by the relative paucity of commercial higher-order CFD solvers, but that may change since a higher-order scheme gives a more accurate solution than a second-order scheme with a given grid spacing.

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