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FINITE-ELEMENT STUDY ON THE ROLE OF CONVECTION IN LASER-SURFACE MELTING

DSpace at IIT Bombay

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Field Value
 
Title FINITE-ELEMENT STUDY ON THE ROLE OF CONVECTION IN LASER-SURFACE MELTING
 
Creator RAVINDRAN, K
SRINIVASAN, J
MARATHE, AG
 
Subject navier-stokes equations
flow
 
Description The surface-tension-driven convection in laser melting has been simulated by the Galerkin finite element method. The governing laminar, axisymmetric convection equations are solved in a sequential manner by an explicit projection method. The numerical results show a strong dependence of the flow pattern on the value of the temperature coefficient of surface tension (sigma(T)). Results are presented for a range of sigma(T) values typical in steel, -10(-4) less-than-or-equal-to sigma(T) less-than-or-equal-to + 10(-4) N / mK. As the melt depth is more affected than the width, the melt aspect ratio changes due to convection. The melt pool is broad and shallow when sigma(T) < 0, and deep and narrow when sigma(T) > 0.
 
Publisher HEMISPHERE PUBL CORP
 
Date 2011-07-31T06:44:00Z
2011-12-26T12:52:52Z
2011-12-27T05:39:49Z
2011-07-31T06:44:00Z
2011-12-26T12:52:52Z
2011-12-27T05:39:49Z
1994
 
Type Article
 
Identifier NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 26(5), 601-618
1040-7782
http://dx.doi.org/10.1080/10407789408956012
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8017
http://hdl.handle.net/10054/8017
 
Language en