Patent ID: 8160846
Filing Date: 2012-04-17
Classification: G06F

Abstract:
1. A computerized method of modeling phase changes due to laser pulse heating, comprising the steps of establishing a set of variables S calculating temperature variation and cavity depth in the substrate material due to laser heating for solid and liquid heating of the substrate material as establishing boundary conditions for the calculation of temperature variation and cavity depth in the substrate material for solid and liquid heating; establishing a set of variables ρ calculating temperature variation and cavity depth in the substrate material due to laser heating at the solid-liquid interface as establishing a set of variables ρ calculating temperature variation and cavity depth in the substrate material due to laser heating at the liquid-vapor interface as wherein calculation of temperature variation and cavity depth in the substrate material due to laser heating for solid and liquid heating, at the solid-liquid interface, and at the liquid-vapor interface is performed by discretization; and displaying numerical results of the calculated temperature variation and cavity depth in the substrate material due to laser heating for solid and liquid heating at the solid-liquid interface and at the liquid-vapor interface; wherein the step of discretization comprises the steps of: establishing a set of variables ρ, p, i, j, a, b, C, E, W, N, S and H, wherein p represents a time index, i represents an r-coordinate index, j represents a z-coordinate index, ρ represents density, and a, b, C, E, W, N, S and H are intermediate variables; discretizing the calculation of temperature variation and cavity depth in the substrate material due to laser heating for solid and liquid heating as discretizing the calculation of temperature variation and cavity depth in the substrate material due to laser heating for the solid-liquid interface as discretizing the calculation of temperature variation and cavity depth in the substrate material due to laser heating for the liquid-vapor interface as