pg_utils.pg_model.forcing.Lz_asym_expr

pg_utils.pg_model.forcing.Lz_asym_expr = s*(B_s^+(s, \phi, t)*B_z^+(s, \phi, t) - B_s^-(s, \phi, t)*B_z^-(s, \phi, t))/H(s) + B_z^+(s, \phi, t)**2 + B_z^-(s, \phi, t)**2 - 2*B_{z}^e(s, \phi, t)**2 + (s*Derivative(\widetilde{M_{sz}}(s, \phi, t), s) + \widetilde{M_{sz}}(s, \phi, t))/s + Derivative(\widetilde{M_{\phi z}}(s, \phi, t), \phi)/s

Expression: antisymmetric integral of the axial Lorentz force