基于正交设计的浮体结构流动特性分析  

Exploring of flow characteristics of floating structure based on orthogonal design

作　　者：崔贞[1] 傅宗甫[1] 陈月君[1] CUI Zhen;FU Zongfu;CHEN Yuejun(College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098,China)

机构地区：[1]河海大学水利水电工程学院

出　　处：《武汉大学学报（工学版）》2018年第6期471-477,497,共8页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51279048);中央高校基本科研业务费专项资金资助(编号:2016B40414)

摘　　要：采用正交设计以及CFD仿真,对在流动水域中不同浮体长度和水力因素下的水流流动特性的影响进行了分析.结果表明,浮体长度以及水力因素对浮体所受动水压力、水流特征流速以及回流区长度都存在显著影响：特征流速以及回流区长度受单宽流量的影响更敏感,而浮体结构参数对浮体表面所受动水压力影响显著.同时给出浮体长度以及水力因素与流动特性的对应关系,为了解浮体结构在动水运行过程中的流动特性变化规律以及浮体稳定性设计提供参考.In light of the security and stability of floating structures,the orthogonal design and CFD simulations are used to explore the effects of different structural parameters and hydraulic factors on the flow characteristics of the floating structure.The results show that floating structure length and hydraulic factors have a significant effect on the hydrodynamic pressure,water flow velocity and length of recirculation region,the sensitivity of water flow velocity and length of recirculation region are relatively large on the discharge per unit width;the sensitivity of the hydrodynamic pressure is relatively large on floating structure scales;the corresponding relationship between the flow characteristic and floating structure scales and hydraulic factors are got at the same time.The research methods and results of this paper can provide a reference for designing the stability of the floating structure and knowing the water characteristic during its operation.

关 键 词：浮体结构 CFD 正交设计 流动特性 敏感性分析 

分 类 号：TV663.5[水利工程—水利水电工程]