Ahot brass plate is having its upper surface cooled by impinging jet of air at temperature of 15 °c and convection heat transfer coefficient of 220 w/m2·k. the 10-cm-thick brass plate (rho = 8530 kg/m3, cp = 380 j/kg·k, k = 110 w/m·k, and α = 33.9 × 10-6 m2/s) had a uniform initial temperature of 655 °c, and the lower surface of the plate is insulated. it has a uniform nodal spacing of δx = 2.5 cm and time step of δt = 10 s.