The present work focuses on the influence of transient metal/mold heat transfer coefficients (hi), affected by melt superheat, on the positional variation of inverse segregation during upward solidification of Al - 6.2wt% Cu alloy. A numerical model which pen-nits the theoretical predictions of inverse segregation and consists of an iniplicit/explicit time integration scheme for coupling solutal and thermal fields, has been modified to take into account different thermo-physical properties for the liquid and solid phases, time variable metal/mould interface heat transfer coefficient, and a variable space grid to assure the accuracy of results without raising the number of nodes. The numerical simulations were compared with the experimental segregation profiles and a good agreement can be observed in both cases experimentally examined.