DerivativesOrder

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DerivativesOrder

Section Mesh::Derivatives
Type integer
Default 4

This variable gives the discretization order for the approximation of the differential operators. This means, basically, that DerivativesOrder points are used in each positive/negative spatial direction, e.g. DerivativesOrder = 1 would give the well-known three-point formula in 1D. The number of points actually used for the Laplacian depends on the stencil used. Let $O$ = DerivativesOrder, and $d$ = Dimensions.




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