摘要
进行了潮汐弯道段电厂取排水模型试验,采用W形波纹凹槽方式加糙,使模型糙率达到了模型试验的要求。利用水位跟踪技术进行了潮汐模拟,采用自动测速、测温技术进行了流场及温度场的测量。得到了特征断面多种工况随潮周期变化的温度过程线,建立了温度场与流速场的相关关系,研究了温度过程线的变化机理,分析了取排水口对温度场的相互影响关系,探讨了无量纲温升时长比与无量纲来取流量比的相关关系。分析了特征断面的温度过程线的变化特点,得到的参数可供数值模拟对比使用。
The water intake and outlet of power plant in tidal fiver bend is researched by model test with adopting W shaped rippled groove which meets the request of model roughness. Tide simulation is studied by using water level tracking technology, the velocity field and temperature distribution are measured by using automatic velocimetry and temperature sensor. Temperature process lines with tidal cycles of multi engineering conditions of characteristic sections are obtained, the relationship between temperature distribution and velocity field is established, the inner mechanism change of temperature process lines is investigated, the interrelation between water intake and outlet is analyzed, the relation between the ratio of dimensionless temperature rise span of the plant intake and the ratio of river discharge volume and plant cooling water intake volume is obtained. The change of the characteristic sections of temperature process lines is analyzed and the coefficients obtained from analysis are used for comparison of the numerical simulation.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第6期119-124,共6页
Journal of Hydroelectric Engineering
关键词
环境水力学
潮汐弯道段
取排水口
概化模型
温度场
流速场
environmental hydrodynamics
tidal river bend
water intake and outlet
generalized model
temperature distribution
velocity field
