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:

1971-08-10

Pagination or Media Count:

10.0

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