摘要
ACP100集成式堆顶结构冷却风管采用了与“华龙一号”(HPR1000)相近的流线型对称式布置结构。为了对该冷却风管进行结构优化,改善其通风性能,提高设计效率,提出了一种基于Taguchi方法的结构优化方法。对ACP100冷却风管方案进行物理建模,筛选出了影响冷却风管性能的独立可控的结构因素和合适水平。使用Taguchi方法进行试验设计,利用L 9(34)正交表制订了9组试验方案。在Fluent 14.5中选择Realizable k-ε方程,并参考实际工况设置边界条件。对各试验风管的方案进行数值模拟,比较不同方案下的流场特性和压降。在Minitab 17中采用Taguchi望小特性法计算信噪比,得到了各因素对风管压降的影响程度排秩和最优的因素水平组合方案。在Fluent 14.5中使用相同的边界条件和求解器设置对最优因素水平组合方案进行模拟验证。最终证实了该风管结构具备比其他方案更低的压降、较好的流场分配能力和更小的重心偏心量,是替代ACP100集成式堆顶结构冷却风管的优良选择。
The cooling vent of integrated head structure in ACP100 reactor model applied similar structure type in ACP1000,which is streamlined and symmetrical.In order to optimize the cooling vent structure,improve the ventilation performance,and enhance the design efficiency,an optimization based on the Taguchi method is proposed.With physical model of ACP100 cooling vent carrying out,the independent controlled factors and suitable levels that can influence cooling vent performance are summarized.Taguchi method is used in experiment design,while 9 experiment cases are built by orthogonal array L 9(34).Then realizable k-εmodel is used in Fluent 14.5,and boundary conditions are set up as actual conditions.Every experiment cooling vent case is simulated,while the flow characteristics and pressure drops are all discussed.With signal-to-noise ratio calculated by smaller-the-better equation of Taguchi in Minitab 17,the rank of factors that affect the pressure drop and the optimal level combination scheme are also achieved.By simulating in Fluent 14.5 with same boundary conditions and solver settings applied,the performance of optimized scheme is validated.It is proved that the optimized structure scheme can show lower pressure drop,better flow distribution and smaller eccentricity of gravity center,which is a more suitable choice to replace the cooling vent structure in ACP100.
作者
胡雪飞
罗英
王留兵
李浩
王仲辉
吴冰洁
曹奇锋
张润豪
HU Xue-fei;LUO Ying;WANG Liu-bing;LI Hao;WANG Zhong-hui;WU Bing-jie;CAO Qi-feng;ZHANG Run-hao(Nuclear Power Institute of China,Chengdu,Sichuan Prov.610041,China)
出处
《中国核电》
2020年第6期788-794,809,共8页
China Nuclear Power
