摘要
对用于固液相变问题数值模拟的界面流动技术的精度进行了讨论. 分析表明对移动界面项使用一阶有限差分不能精确地描述界面的运动,特别是在解决如爆融情况下的高热流问题. 建议使用二阶方法,其在所有情况下均可保证足够的精度.
The accuracy of the interface-following technique used to numerically model solid-liquid phase-change problems is discussed in the paper. The analysis shows that the first-order finite-difference model for the moving interface term in the interface-following method can not accurately predict the interface movement, especially for very high heat transfer rates such as occurring in explosive melting of solids. A method of second-order accuracy is also proposed to give accurate results in all situations.
出处
《上海理工大学学报》
CAS
北大核心
2001年第3期209-212,共4页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(59995550-3)
关键词
界面流动
爆融
相变
数值模拟
传热
interface motion
explosive melting
phase change
