2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/212206Fluids of grade n are continuous media in dynamic changes of phases avoiding the surfaces of discontinuity and representing the capillary layers in liquid-vapour interfaces. We recall the thermodynamic form of the equation of motion for inviscid fluids of grade n. First integrals and theorems of circulation are deduced. A general classification of flows is proposed.Revisited and completed version, 18 pages and 2 figuresClassical PhysicsMathematical Physicstext