摘要
研究围绕变壁温热源的接触熔化,建立表面温度随角度变化的水平圆柱热源接触熔化模型.对紧密接触熔化区的液体传热与运动状态进行分析,运用Nusselt液膜理论建立熔化控制方程,并采用理论求解,得到稳定熔化时的熔化速度解析解,所得结果包含了文献关于定壁温热源熔化的分析结果.通过分析不同温度分布下发生接触熔化的熔化速度、液膜厚度和压力分布情况,得到温度分布对熔化影响的规律.
Contact melting around a heat source with non-isothermal wall is investigated.A theoretical model for contact melting around a horizontal cylindrical heat source,whose wall temperature varied with angle,is established.Condition of heat transfer and motion of the liquid molten in contact region are studied.Control equations of melting are established with Nusslet＇s liquid film theory.And analytical solution of melting velocity is obtained theoretically.It includes result published in literature about melting around the heat source with constant temperature.Melting velocity,thickness and pressure distribution of molten layer under different melting conditions are studied.Effects of temperature distribution on melting are obtained.
出处
《计算物理》
EI
CSCD
北大核心
2012年第2期257-262,共6页
Chinese Journal of Computational Physics
基金
国家自然科学基金(50376074)资助项目
关键词
接触熔化
变壁温
圆柱
相变
传热
contact melting
non-isothermal wall
horizontal cylinder
phase change
heat transfer
