Superposability in magnetohydrodynamics

Summary In the present paper, to study the non-linear terms in hydromagnetics, the concept of superposability or additivity of two hydromagnetic flows has been defined, and it has been shown that force-free fields (Chandrasekhar) and self-superposable fluid flows (Strang) are particular cases of this concept. Chandrasekhar's equations for axially symmetric hydromagnetic flows have been extended to viscous fluids, and it has been shown that some important results for non-viscous flows need not hold for viscous fluids.