About character of distribution of cryodestruction and freezings borders of a biological tissue at its cryogenic cooling

In this article the one-dimensional problem of Stefan’s type with the nonlinear source, arising in cryosurgery is considered. On its example the question on speed of distribution of borders of zones of cryodestruction, freezing and influences of cold for a case of plane-parallel cryodestruction a biological tissue is investigated. Numerically it was possible to find out significant delay of speed of distribution of the specified borders that confirms presence of effect of space localisation of heat in similar models.