技术中心

【摘要】 针对某带引射装置的循环预冷系统,基于一维非平衡两流体模型,结合引射器模型建立采用交错网格与两步求解法,数值模拟并分析了整个自然循环(含引射增强)预冷非稳态进程,定量评价了循环流动特性、引射增强及预冷效果。数值模拟并探讨了循环预冷系统参数对预冷状态与过程的影响。 【Abstract】 Applying staggered meshing and two-step solving algorithm,numerical investigation on the unsteady natural circulation(including injection enhancing) chilldown process was carried out based on one-dimensional non-equilibrium two-fluid model and specific-established injector model.Circulation flow features,effectiveness of injection enhancement and chilldown were quantitatively presented and assessed.Furthermore,the effects of some parameters of system on chilldown states and process were discussed by numerical simulation. 【关键词】 循环预冷; 自然循环; 引射; 非平衡两流体模型; 数值模拟 【Key words】 circulation chilldown; natural circulation; injection; non-equilibrium two-fluid model; numerical simulation