get_Cw_cpx
Produces a sparse matrix
\[\bar{\mathbf{C}}(z)\]
where
\[z = e^{k \Delta t}\]
such that the wake circulation frequency response at \(z\) is
\[\bar{\boldsymbol{\Gamma}}_w = \bar{\mathbf{C}}(z) \bar{\mathbf{\Gamma}}\]
Produces a sparse matrix
\[\bar{\mathbf{C}}(z)\]
where
\[z = e^{k \Delta t}\]
such that the wake circulation frequency response at \(z\) is
\[\bar{\boldsymbol{\Gamma}}_w = \bar{\mathbf{C}}(z) \bar{\mathbf{\Gamma}}\]