Using methods of classical and quantum physics in bioenergy

We consider the construction of asymptotic solutions of linear equations related to equations of classical mechanics: the Hamilton–Jacobi equation and the transport equation. We show that these methods and also the theory of the mechanics of an infinitely narrow beam as a whole can be applied to some objects in bioenergy if the thin organic objects of the type of wood splinters, straw, pellets, and so on are approximated by infinitely narrow beams.