Sentence examples for central stencil from inspiring English sources

Accuracy is obtained by merely putting a large linear weight on the central stencil.

In contrast to other ENO schemes which require reconstruction on multiple stencils, the proposed CENO method uses a hybrid reconstruction approach based on a fixed central stencil.

The spatial discretization of the inviscid (hyperbolic) fluxes combines an unlimited high-order k-exact least-squares reconstruction technique following from the optimal central stencil with a monotonicity-preserving, limited, linear, reconstruction algorithm.

Both reconstructions are performed on central stencils, and the switching procedure is based on a smoothness indicator.

The 3D CENO scheme is an accurate and robust solution method for hyperbolic conservation laws on general hexahedral grids that is attractive because it is inherently multidimensional by employing a K-exact overdetermined reconstruction scheme, and it avoids the complexity of considering multiple non-central stencil configurations that characterizes traditional ENO schemes.

A correction term is introduced to the standard central difference stencil so that the numerical discretization is well-defined across the interface.

These novel first derivative SBP operators have a non-central difference stencil in the interior, and come in pairs (for each order of accuracy).

We construct accurate central difference stencils for problems involving high frequency waves or multi-frequency solutions over long time intervals with a relatively coarse spatial mesh, and with an easily obtained bound on the dispersion error.

This is done by demonstrating that the problem of constructing central difference stencils that have minimal dispersion error in the infinity norm can be recast into a problem of approximating a continuous function from a finite dimensional subspace with a basis forming a Chebyshev set.

This new set of central differencing schemes has the stencil width matching that of the seventh order weighted essentially non-oscillatory scheme (WENO).

A 7-point stencil first-order, central differential filter is applied to the output (i.e., y[ n]) of H l 1 z) [ 30]: (6) D 1 z = − 1 − 9 z − 16 + 45 z − 32 − 45 z − 64 + 9 z − 80 − z − 96, where the gain is Gain2 = 960 and the intrinsic delay of D1 z) is 48 samples.