TY - JOUR N2 - Pouring of liquid aluminium is typically accompanied by disturbance of the free surface. During these disturbances, the free surface oxide films can be entrained in the bulk of liquid, also pockets of air can be accidentally trapped in this oxide films. The resultant scattering of porosity in castings seems nearly always to originate from the pockets of entrained air in oxide films. Latest version of ProCast software allows to identify the amount of oxides formed at the free surface and where they are most likely to end-up in casts. During a filling calculation, ProCast can calculate different indicators which allow to better quantify the filling pattern. The fluid front tracking indicator “ Free surface time exposure” has the units [cm2*s]. At each point of the free surface, the free surface area is multiplied by the time. This value is cumulated with the value of the previous timestep. In addition, this value is transported with the free surface and with the fluid flow.Experiments to validate this new functions were executed. L1 - http://www.czasopisma.pan.pl/Content/102041/PDF/afe-2017-0084.pdf L2 - http://www.czasopisma.pan.pl/Content/102041 PY - 2017 IS - No 3 DO - 10.1515/afe-2017-0084 KW - Aluminium alloys KW - Oxide films KW - Numerical simulations A1 - Bolibruchová, D. A1 - Pastirčák, R. A1 - Brůna, M. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 17 DA - 2017 T1 - Reoxidation Processes Prediction in Gating System by Numerical Simulation for Aluminium Alloys UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/102041 T2 - Archives of Foundry Engineering ER -