mod_rec_fast_scheme_o3d1_centered Module Reference

Reconstruction Scheme: first derivative with a centered scheme at order 3 (at the fixed +1/2 position). This scheme is compatible with non uniform grids. This scheme is fourth order with a uniform grid. More...

Functions/Subroutines
subroutine	t_rec_fast_scheme_o3d1_centered_compute_weights (stencil, nx, dx, shift, preweights)
	Compute the weights associated to the scheme at each cell in [1:nx].

Variables
type(t_rec_fast_scheme_o3d1_centered), target	rec_fast_scheme_o3d1_centered

Detailed Description

Reconstruction Scheme: first derivative with a centered scheme at order 3 (at the fixed +1/2 position). This scheme is compatible with non uniform grids. This scheme is fourth order with a uniform grid.

Note

The scheme is defined for points [-1:+2]

The fixed position is at the end of the 0's cell. This is the usual position for reconstruction schemes.

Function/Subroutine Documentation

t_rec_fast_scheme_o3d1_centered_compute_weights()

subroutine mod_rec_fast_scheme_o3d1_centered::t_rec_fast_scheme_o3d1_centered_compute_weights	(	class(t_stencil_1d), intent(in)	stencil,
		integer, intent(in)	nx,
		double precision, dimension(:), intent(in)	dx,
		integer, intent(in)	shift,
		class(t_int_grid_preweights), dimension(:), intent(inout)	preweights )

Compute the weights associated to the scheme at each cell in [1:nx].

Warning

as we cannot access to values outside [1:nx], the weights are in fact computed in the computable stencil around the cell.

rec_scheme_o4 is between [0:3]!