Cone.d_Phi_phi¶

Cone.d_Phi_phi(r, phi, z)¶

Derivative of the surface function considering the polar angle

\[\begin{split}\frac{\partial\Phi}{\partial\phi}(r(z),\phi,z)= \begin{bmatrix}-r(z)\sin(\phi)\\r(z)\cos(\phi)\\0\end{bmatrix}\end{split}\]

with polar angle \(\phi\) and radius function along the \(z\)-axis

\[r(z)=r_1+\frac{r_2-r_1}{l-1}(z-1)\]

with radii \(r_1\) and \(r_2\) and cone length \(l\).

Parameters:

Returns: