Solution of the two-dimensional inverse problem of the binary alloy solidification by applying the Ant Colony Optimization algorithm

In the paper a procedure for solving the two-dimensional inverse problem of the binary alloy solidification is presented. In considered problem the heat transfer coefficient is identified on the basis of measured values of temperature in selected points of the region. Direct problem, associated with the inverse one, is solved by using the generalized alternating phase truncation method. Functional expressing of the error of approximate solution is minimized with the aid of Ant Colony Optimization algorithm. The model also includes the macrosegregation, influencing the solidification, described by means of the lever arm model.