Gg. Gladush et al., INFLUENCE OF SURFACTANTS ON HEAT AND MASS -TRANSFER IN MELTING OF THESURFACE OF A SUBSTANCE BY A LASER-PULSE, Kvantovaa elektronika, 24(3), 1997, pp. 274-278
It is shown theoretically and numerically that the convective flow reg
imes during melting of the surface of a substance by a laser depend on
the relationship between dimensionless thermocapillary and concentrat
ion-capillary numbers, that an inhomogeneity of the distribution of su
rfactant particles and unsteady surface heating may give rise to a mul
tivortex structure of surface flows, and that the development of multi
vortex flows facilitates deeper penetration of an alloying substance i
nto a laser melt.