Fluid flow in laser melted pool
Abstract
The convective heat transfer and fluid flow are analyzed. Transient two dimensional model for surface tension driven fluid flow in laser melted pool is developed. The model describes the transient behavior of the heat transfer process of a stationary band source. Some semiquantitative understanding of scanning is obtained by a coordinate transformation. Four dimensionless parameters arising from the general 3D mathematical formulation are: Reynolds number (Re), Prandtl number (Pr), Surface tension number (S), and the melting temperature (T*melt). Each of these would govern the characteristics of the problem and each has its own physical interpretation. In the case of band source, Re and S are grouped into one parametertheir product. Numerical solution, using the program SOLA is obtained for two different Prandtl number 0.1 and 0.02.
 Publication:

Abstracts of the 20th Annual Meeting, Society of Engineering Science, Inc.
 Pub Date:
 1983
 Bibcode:
 1983sesi.meet....6C
 Keywords:

 Convective Heat Transfer;
 Flow Velocity;
 Fluid Flow;
 Laser Applications;
 Aluminum;
 Flow Distribution;
 Interfacial Tension;
 Mathematical Models;
 Prandtl Number;
 Reynolds Number;
 Steels;
 Two Dimensional Models;
 Fluid Mechanics and Heat Transfer