I wish to calculate the electric field for a 3d case (for ohmic heating calculation). Having the electric potential solved, i can get the electric field provided that the grids are orthogonal. For skew grids, there will be a difficulty in adding up the electric potential gradients. Is there a function in Phoenics v3.6.1 to calculate the gradient of a variable? Also, is there another method to calculate the Electric Field from electric potential for skew grids? Or any other methods?

how 2 calculate potential at a point when co-ordinates are known?

dear sir,i want to know first about the future scope of electrical in amarica.also, the placemant in various collages in american universities(about job offers),thank u!

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ı am trying to make homework about electric field calculation method in finite length.could u send me information about this object.thanks