HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD

HU Guoxin; TIAN Cenwei; WANG Guoxiang

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HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD

更新时间：2025-12-10

- HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD
- CIESC Journal Issue 7, (2002)
- 作者机构：
  
  1. 上海交通大学工程热物理研究所
  2. 上海交通大学铸造研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 July 2002，
  
  Published：25 July 2002
- 稿件说明：
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HU Guoxin, TIAN Cenwei, WANG Guoxiang. HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD[J]. CIESC Journal, 2002, (7).
DOI：

HU Guoxin, TIAN Cenwei, WANG Guoxiang. HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD[J]. CIESC Journal, 2002, (7). DOI：

摘要

针对转动坐标系中铝熔液在SiC多孔介质内的流动传热现象

考虑离心力对渗流传热过程的影响

采用局部非热平衡假设建立多孔介质渗流传热数理模型

研究不同工况下流体的流速、压力损失及铝熔液和多孔介质的温度变化 .计算结果表明 :在渗透区域

液固两相存在温差

且液固温差随渗透界面的移动而减小 ;在非渗透区域

固体的温度曲线基本不变 .离心转速或孔隙率的增加都使渗透前沿区域液固两相温差增大 .孔隙率对流场和压力损失有较大影响.

Abstract

In this paper

molten aluminum flow with heat transfer though SiC porous media in a centrifugal force field is described with a mathematical and physical model.The implicit TDMA Algorithm and first kind of first-order upwind difference were used to solve the conservation equation associated with appropriate boundary conditions.The distribution of molten aluminum velocity and pressure

the temperature field of flow and porous media in a centrifugal force field are examined for different conditions.The results show that local temperature of fluid phase is higher than that of solid phase.The temperature difference between fluid and solid decreases with the moving of infiltrated distance.The infiltration of molten aluminum through SiC porous media in the centrifugal force field depends greatly on the angular velocity and the temperature of preheated SiC porous media.SiC volume fraction has a strong effect on velocity and pressure drop of molten aluminum.

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