Unsteady compressible flow - A computational method consistent with the physical phenomena

摘要: A methodology for the numerical prediction of 2-D and 3-D unsteady, in viscid, compressible flows is presented. The primitive Euler equations are recast terms compatibility on characteristic surfaces. In such a way evolution time flow properties described explicitly as interaction signals corresponding to physical wave-propagation phenomenon. discretized through finite-difference method where proper domain dependence each computed point preserved, by approximating space-derivatives with one-sided differences, according velocity propagation along bicharacteristics. Results application proposed subsonic transonic past airfoils shown compared different methods.