Díaz Díaz, Jesús IldefonsoKersner, R.2023-06-212023-06-2119830764-4442https://hdl.handle.net/20.500.14352/64674We study the qualitative behaviour of solutions of the equation ut−(um)xx+b⋅(uλ)x=0 when it models some evaporation phenomena, λ<1≤m. We show strong differences with respect to the porous media equation; there is no right free boundary. We also study the behaviour of the left free boundaryjournal articlemetadata only access517.954free boundary problemsflows in porous mediafiltrationseepageEcuaciones diferenciales1202.07 Ecuaciones en Diferencias