aPriori.gradient_z

aPriori.gradient_z(F, mesh, filter_size=1)

Computes the z component of the gradient of a 3D, non downsampled, filtered field. Numpy is used to computed the gradients on all the possible downsampled grids

Parameters:

• Ur (Scalar3D object) – Is the field to filter.

• mesh (Mesh3D object) – Is the mesh object used to compute the derivatives.

• filter_size (int) – Is the filter size used to filter the field.

Returns:

grad_z – The z component of the gradient

Return type:

numpy array