TY - JOUR

T1 - Computational study of heat transfer and gas dynamics in the pulsed laser evaporation of metals

AU - Ho, J. R.

AU - Grigoropoulos, Costas P.

AU - Humphrey, J. A.C.

PY - 1994

Y1 - 1994

N2 - A computational approach is presented for the heat transfer and fluid flow phenomena in pulsed laser processing of materials. The heat conduction in the solid substrate and the liquid melt is solved by a one-dimensional transient heat transfer model. The compressible gas dynamics is computed numerically by solving the system of Euler equations for mass, momentum and energy, supplemented by an isentropic gas equation of state. Aluminum, copper and gold targets were subjected to pulsed ultraviolet excimer laser irradiation of nanosecond duration. Results are presented for the temperature distribution, evaporation rate and melting depth in the target, as well as the pressure, velocity, and temperature distributions in the vapor phase.

AB - A computational approach is presented for the heat transfer and fluid flow phenomena in pulsed laser processing of materials. The heat conduction in the solid substrate and the liquid melt is solved by a one-dimensional transient heat transfer model. The compressible gas dynamics is computed numerically by solving the system of Euler equations for mass, momentum and energy, supplemented by an isentropic gas equation of state. Aluminum, copper and gold targets were subjected to pulsed ultraviolet excimer laser irradiation of nanosecond duration. Results are presented for the temperature distribution, evaporation rate and melting depth in the target, as well as the pressure, velocity, and temperature distributions in the vapor phase.

UR - http://www.scopus.com/inward/record.url?scp=0028736169&partnerID=8YFLogxK

M3 - 會議論文

AN - SCOPUS:0028736169

SN - 0272-5673

VL - 291

SP - 71

EP - 83

JO - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD

JF - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD

T2 - Proceedings of the 1994 International Mechanical Engineering Congress and Exposition

Y2 - 6 November 1994 through 11 November 1994

ER -