环形狭缝通道内流固耦合传热特性的数值分析  

Numerical Analysis of Ring Slit Channel Fluid-solid Coupling Heat Transfer Characteristics

作　　者：张化福[1] 张秋翔[1] 李双喜[1] 蔡纪宁[1] 

机构地区：[1]北京化工大学机电工程学院

出　　处：《建筑热能通风空调》2014年第1期66-68,共3页Building Energy & Environment

基　　金：国家863计划基金项目(2011AA02A207)

摘　　要：建立了流固耦合传热的数值分析模型,求解得到了流固耦合传热性能如温度、传热系数、摩擦系数、汽相体积分数沿换热元件轴向变化的分布。结果表明:随着质量流量的增加传热性能有被强化的趋势;相变之前,传热性能与热流密度的无关,相变之后,传热性能被强化,但趋势逐渐放缓;热流密度越大,质量流量越小,相变点越靠前。Build up the fluid-solid coupling heat transfer numerical analysis model; Solve and obtain the fluid-solid coupling heat transfer properties such as temperature, heat transfer coefficient, friction coefficient, vapor phase volume fraction distribution along with the heat transfer element axial. The results show that： heat transfer performance has tendency of being strengthened along with the increase of import mass flow; Heat transfer performance has no obvious change before phase change, Heat transfer performance is enhanced after phase change along with the increase of wall heat flux density, but the trend is slowing; The larger heat flow density is, The smaller mass flow rate is, The closer from import phase transition point position is.

关 键 词：汽液两相流 耦合传热 环形狭缝 

分 类 号：TK124[动力工程及工程热物理—工程热物理]