A free boundary problem describing the saturated‐unsaturated flow in a porous medium. Part II. Existence of the free boundary in the 3D case
Gabriela Marinoschi · Abstract and Applied Analysis · 2005
We present an extension of the results given in the first part of this paper (2004) referring to the existence in the 3D case of a free boundary between the saturated and unsaturated domains that may be evidenced during the water flow into a porous medium.