Discussion Forum

I am trying to see if I am able to make a simplification in an analytic model I am trying to develop but to do so means I need to verify that this simplification is mathematically reasonable for my model. I am trying to see if one of the terms in the Vector Laplacian, the d(A_rho)/d(phi) term can be neglected so I am trying to plot out the vector fields in cylindrical coordinates, or even better that particular term relative so I can see how it is relative to some other terms. The problem I am having is that I do not know how to plot in cylindrical coordinates. I have a cylindrical coordinate system defined in the definitions section but when I try to plot any vector fields, from the 3D Arrow Volume or Arrow Surface section, I am not able to select anything but Cartesian coordinates. How would I be able to plot the (rho, phi, z) components of the field rather than Cartesian. And, if even better, how could I divide A_rho by arctan(y/x) (which is phi) to I can see the term in the Vector Laplacian I am trying to eliminate?