摘要
水力机械种类繁多、流动复杂,转轮流固耦合动力特性及如何考虑设计要素对机组安全稳定运行极为重要。论文基于现代水力机械流动分析技术及流固耦合特性分析方法,对转轮的关键设计要素进行探讨,并展示了本课题组在转轮内部流动物理现象如漩涡、空化、压力脉动、含沙水流运动等的模拟、分析、预测方面的技术方法及成果,以及转轮共振和疲劳破坏的流固耦合动力特性分析案例,并对新电站机组选型设计、老电站改造、新型机组研发方面的工程应用进行分析,同时展望了多场计算技术、转轮寿命预测、信息共享平台建立等方面的发展前景。
Based on the modern techniques of analysis on the flow in the hydraulic machinery and the analysis methods for the fluid-structure interaction characteristics,the key elements for the design of the hydraulic machinery runner are discussed herein,and then the technical methods and the achievements in the aspects of the simulation,analysis and prediction made on the physical phenomena inside of the runner,such as vortex,cavitation,pressure pulsation,movement of sediment-laden flow,etc. are presented,furthermore,the cases of the analyses on the fluid-structure interaction characteristics of the resonance and fatigue damage of the runner are showed as well. Moreover,the relevant engineering applications in the aspects of the design of the typeselection of the hydropower generating unit for new hydropower station,the improvement of old hydropower station and the development of new type of hydropower generating unit are analyzed,while the developing trends of the multivariate field computation,runner life prediction and information sharing platform are also prospected.
出处
《水利水电技术》
CSCD
北大核心
2015年第6期72-78,共7页
Water Resources and Hydropower Engineering
基金
国家自然科学基金重点项目(51439002)
关键词
漩涡
空化
含沙水流
裂纹
流固耦合
转轮
vortex
cavitation
sediment-laden flow
crack
fluid-structure interaction
runner