摘要
采用有压管道特征线法、跟踪明满流分界点的明渠改进狭缝法和状态方程数值计算的联合算法,结合相应的边界条件,研究变顶高尾水洞方案的水力干扰问题,并与尾水调压室方案进行了比较分析,结果表明:变顶高尾水洞方案水力干扰对运行机组稳定性和调节品质的影响较尾水调压室方案小,此水力特性为变顶高尾水洞的应用提供了可靠的比选依据.
In combination with corresponding boundary conditions, the hydraulic turbulence calculation for the tailwater tunnel system with a sloping ceiling shared by two units was studied with a unified method, in which the characteristic line method for pressurized conduits, the improved slot method for open channel by tracing the separation points of free flow and full flow, and numerical method of state equation were combined. The comparison of the result with that of the tailwater surge tank scheme shows that the hydraulic turbulence in the tailwater tunnel system has little influence on the stability of operation and regulation quality of units. The results provide a reliable basis for selection of the tailwater tunnel scheme with a sloping ceiling.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第6期661-664,共4页
Journal of Hohai University(Natural Sciences)
基金
科技部水资源与水电工程科学国家重点实验室开放基金资助项目(2003B005)
关键词
尾水洞
水力干扰
尾水调压室
有压管道
明渠
水力特性
机组
运行
状态方程
可靠
hydropower station
two units sharing a common pipeline
tailwater tunnel with a sloping ceiling
improved slot method
hydraulic turbulence
