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

J. R. Ho, Costas P. Grigoropoulos, J. A.C. Humphrey

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


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.

Original languageEnglish
Pages (from-to)71-83
Number of pages13
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
StatePublished - 1994
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: 6 Nov 199411 Nov 1994


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