Element-free Galerkin method for thermosolutal convection and macrosegregation

被引：1

作者：

Sajja, Udaya K.

Felicelli, Sergio D. ^{[1
]}

机构：

[1] Mississippi State Univ, Dept Mech Engn, Mississippi State, MS 39762 USA

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2010年 / 64卷 / 07期

基金：

美国国家科学基金会;

关键词：

element-free Galerkin method; projection method; dendritic solidification; thermosolutal convection; freckles; macrosegregation; SMOOTHED PARTICLE HYDRODYNAMICS; ESSENTIAL BOUNDARY-CONDITIONS; FRECKLE FORMATION; NUMERICAL-SIMULATION; PB-SN; SOLIDIFICATION; FLOW; PERMEABILITY; ALLOY; PROPAGATION;

D O I：

10.1002/fld.2169

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In the present work, the element-free Galerkin (EFG) method is applied to a continuum solidification model that calculates thermosolutal convection and macrosegregation during dendritic solidification of multicomponent alloys. Simulations for directional solidification of a binary Pb-Sn alloy and a Ni-base quaternary alloy have been performed in a rectangular two-dimensional domain. In both calculations, the alloy melt is cooled from below and the growth of the mushy zone is followed in time. The formation of macrosegregation defects known as 'freckles' has been successfully simulated using the meshless EFG method. A varying degree of sensitivity of results to the number and distribution of meshfree particles was obtained. The potential of the method for a broader range of solidification models is discussed. Copyright (C) 2009 John Wiley & Sons, Ltd.

引用

页码：733 / 760

页数：28

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