pg_utils.pg_model.forcing.Le_p_expr

pg_utils.pg_model.forcing.Le_p_expr = B_{\phi, z}^e(s, \phi, t)*B_{z}^e(s, \phi, t) + B_{s}^e(s, \phi, t)*Derivative(B_{\phi}^e(s, \phi, t), s) + B_{\phi}^e(s, \phi, t)*B_{s}^e(s, \phi, t)/s + B_{\phi}^e(s, \phi, t)*Derivative(B_{\phi}^e(s, \phi, t), \phi)/s

Expression: the azimuthal Lorentz force in the equatorial plane