21 |
using pure numerical differences and ignoring |
using pure numerical differences and ignoring |
22 |
grid spacing. |
grid spacing. |
23 |
This later form is stable whatever the grid is, and therefore |
This later form is stable whatever the grid is, and therefore |
24 |
specially useful for highly anisotropic grid such as spherical |
specially useful for highly anisotropic grid such as spherical |
25 |
coordinate grid. |
coordinate grid. |
26 |
A damping time-scale parameter $\tau_{shap}$ |
A damping time-scale parameter $\tau_{shap}$ |
27 |
defines the strength of the filter damping. |
defines the strength of the filter damping. |