Efficient location of multiple global minima for the phase stability problem

摘要: Phase stability testing is an important subproblem in phase equilibrium calculations. analysis consists finding either all stationary points or only the global minimum of tangent plane distance (TPD) function. The TPD surface non-convex and may be highly non-linear, many calculations are rather difficult. In this work we solving problem using tunneling optimization method a modified objective function; function minima For its at same level (known, with equal to zero), exploit unique feature method, which able find efficiently reliably multiple level. Numerical experiments for various difficult problems show that powerful reliable tool testing.