python_codes.linear_theory.Cisaillement_basal_rotated_wind#
- Cisaillement_basal_rotated_wind(x, y, alpha, A0, B0, AR, theta)[source]#
Calculate the basal shear stress over a two dimensional sinusoidal topography for an arbitrary wind direction.
- Parameters
x (array, scalar) – Streamwise coordinate, non-dimensional (\(kx\)).
y (array, scalar) – Spanwise coordinate, non-dimensional (\(ky\)).
alpha (array, scalar) – Dune orientation with respect to the perpendicular to the flow direction (in degree).
A0 (array, scalar) – value of the hydrodynamic coefficient for \(\alpha = 0\), i.e. for a dune orientation perpendicular to the flow direction.
B0 (array, scalar) – value of the hydrodynamic coefficient for \(\alpha = 0\), i.e. for a dune orientation perpendicular to the flow direction.
AR (array, scalar) – dune aspect ratio, \(k\xi\).
theta (array, scalar) – Wind direction, in degree, in the trigonometric convention.
- Returns
Taux (array, scalar) – Streamwise component of the non-dimensional shear stress.
Tauy (array, scalar) – Spanwise component of the non-dimensional shear stress
