We study a poromechanic problem in presence of a moving boundary. The poroelastic material is described by means of the Biot model while the moving boundary accounts for the effect of surface erosion of the material. We focus on the numerical approximation of the problem. in the framework of the finite element method. https://www.kaliboat.com/product-category/food-servicetabletop-concession-machinespopcorn-machines/