Accession Number : AD0729642

Title :   Radial Heat Conduction in Laser Heating of Material Slabs.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : DeWitt,Robert N.

Report Date : 10 AUG 1971

Pagination or Media Count : 10

Abstract : To quantify the cases in which radial heat conduction is important, this report investigates the heating of metal slabs by laser beams with beams with finite diameters. A two-dimensional approach is taken which assumes cylindrical symmetry, and the method of finite differences is used to determine temperature profiles in the slabs as a function of time and incident flux intensity. The times necessary to induce melting at the front surface of the slabs are obtained in the two-dimensional approach and compared with the times obtained in the one-dimensional approach. This gives a direct indication of the importance of radial heat conduction. (Author)

Descriptors :   (*THERMAL CONDUCTIVITY, METAL PLATES), (*COHERENT RADIATION, *HEATING), LASERS, ALUMINUM ALLOYS, STAINLESS STEEL, COMPUTER PROGRAMS, CONDUCTION(HEAT TRANSFER), PARTIAL DIFFERENTIAL EQUATIONS, DIFFERENCE EQUATIONS, INTEGRATION

Subject Categories : Lasers and Masers
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE