PERMEABILITY FOR FLOW PARALLEL TO PRIMARY DENDRITE ARMS

被引：102
作者：
GANESAN, S [1 ]
CHAN, CL [1 ]
POIRIER, DR [1 ]
机构：
[1] UNIV ARIZONA,COLL ENGN & MINES,TUCSON,AZ 85721
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1992年 / 151卷 / 01期
关键词：
D O I：
10.1016/0921-5093(92)90186-5
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The permeability for the flow of interdendritic liquid parallel to primary dendrite arms in columnar structures was calculated using the boundary element method for fully developed flow. The permeability was calculated because when the volume fraction of liquid (g(L)) exceeds approximately 0.60-0.65, experiments fail. The calculated results, based on the microstructures of directionally solidified alloys, agreed with analytical results for flow parallel to circular cylinders arranged in square and triangular arrays. It appears that there is a transition in the behavior of the permeability at g(L) almost-equal-to 0.65.
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页码：97 / 105
页数：9
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