A THEORETICAL-MODEL OF THERMOCAPILLARY FLOWS IN LASER-WELDING

被引：20

作者：

POSTACIOGLU, N

KAPADIA, P

DOWDEN, J

机构：

[1] UNIV ESSEX,DEPT MATH,COLCHESTER CO4 3SQ,ESSEX,ENGLAND

[2] TECH UNIV ISTANBUL,ITU FIZIK BOLUMU MASLAK,ISTANBUL,TURKEY

[3] UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1991年 / 24卷 / 01期

关键词：

D O I：

10.1088/0022-3727/24/1/004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Surface tension variations on the surface of the weld pool, produced by a laser during the process of welding, can produce very strong currents. A linearized description of the process is constructed, as well a a non-linear boundary layer model that takes account of thermal conduction and fluid convection. It is found that there is a considerable difference between the predictions of the two approaches. The non-linear model produces results that are compatible with what is believed to occur in practice.

引用

页码：15 / 20

页数：6