LASER SURFACE-TREATMENT DOMINATED BY BUOYANCY FLOWS

被引：11
|
作者：
SCHUSSLER, A
STEEN, PH
EHRHARD, P
机构：
[1] CORNELL UNIV,DEPT CHEM ENGN,ITHACA,NY 14853
[2] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST ANGEW THERMO & FLUIDDYNAM,W-7500 KARLSRUHE 1,GERMANY
来源：
JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 04期
关键词：
D O I：
10.1063/1.351161
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An experimental setup is investigated wherein surface tension forces are suppressed during laser treatment and the melt pool convection is controlled by buoyancy forces. The structure of surfaces processed by this method differs from those of conventionally treated surfaces. A dimensionless measure of buoyancy-flow strength, namely the Grashof number, is employed to quantify the flow intensity that is linked to the breakdown of the covering particle coating. Using a two-dimensional numerical approach the flow and temperature fields are computed.
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页码：1972 / 1975
页数：4
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