In wet soils, zones of saturation naturally develop in the vicinity of impermeable strata, surface ponds and subterranean cavities. Hydrology must be then concerned with transient flow throughâ€¦ (More)

A two-phase Stefan problem with heat source terms in both liquid and solid phases for a semi-in Ì„nite phase-change material is considered. The internal heat source functions are given by gj(x; t) =â€¦ (More)

Keywords: Stefan problem Non-classical heat equation Free boundary problem Similarity solution Nonlinear heat sources Volterra integral equation a b s t r a c t We prove the existence and uniqueness,â€¦ (More)