Analysis of natural convection during solidification of a pure metal

被引：9

作者：

Giangi, M ^{[1
]}

Stella, F ^{[1
]}

机构：

[1] Univ Rome La Sapienza, Dipartimento Meccan & Aeronaut, I-00184 Rome, Italy

来源：

INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS | 1999年 / 11卷 / 3-4期

关键词：

solidification; enthalpy-porosity; fixed-grid; single domain; convection; simple; finite-volume; preconditioned BI-CGStab;

D O I：

10.1080/10618569908940885

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A numerical study of solidification of gallium in a closed cavity is presented and the influence of natural convection on phase change is investigated. The mathematical formulation is based on the enthalpy-porosity method, while the equations are discretized on a fixed grid by means of a finite volume technique. Advancing in time is obtained using the SIMPLE algorithm, while the solution of the elliptic equation for pressure correction is obtained by means of a preconditioned BI-CGStab method. As a test case a square cavity with Ra ranging from 4.68 x 10(3) to 9.36 x 10(5) is adopted. Results will be presented in terms of streamlines, isotherms, solid-liquid interface position and Nu and compared, when possible with available data.

引用

页码：341 / 349

页数：9

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