摘要
水力学问题研究方法多样且各具特点,各类方法所获成果的异同性倍受关注。基于某水电站高水头泄洪底孔,应用物理模型试验、水力学原型观测及时均化的紊流数学模型对水力学问题进行模拟或观测,辨识出3种研究方法的适宜范围及程度,三者对于宏观水力流态、底流速、时均压力及掺气空腔的模拟成果吻合良好,水面线模拟有一定差异,原型水面波动、水舌纵向扩散更大,成果可引导此类型水力学问题的研究方法选择及成果修正。
The research methods of hydraulics are diverse and each method has its characteristics. It is more concerned for the similarities and differences of reached achievements from all kinds of methods. Based on the bottom outlet of flood discharge with high water head in one hydropower station,the simulation and observation are carried through for the hydraulic issues by applying the physical modeling experiment,the prototype measurement of hydraulics and the time-averaged turbulence mathematical model. The adaptable scope and degree of three kinds of methods are identified. It is identical well for the simulated results of three methods with the macroscopic hydraulic flow state,bottom flow velocity,time-averaged pressure and aerated cavity. Meanwhile,there is a certain difference in the simulation of flow profile. The fluctuation prototypical water surface and longitudinal diffusion of water jets are larger. The achievement can be used to lead the selection of research method and correction of achievement for this type of hydraulic issues.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2015年第2期265-270,共6页
Advances in Water Science
基金
中国水电工程顾问集团有限公司科技项目(GW-KJ-2013-13)~~
关键词
泄洪底孔
物理模型
原型观测
数值模拟
bottom outlet of flood discharge
physical model
prototype measurement
numerical simulation
