摘要
为了分析竖缝位置对竖缝式鱼道池室内水力特性的影响,采用RNG k-ε湍流模型和速度-压力耦合SIMPLE算法对不同工况的鱼道进行了数值模拟。模拟结果表明:竖缝位置对主流的形态、主流流速的衰减及竖缝处流速分布影响不大;竖缝位置改变了主流区在池室内的位置,进而影响回流区的分布、大小和流场,竖缝位置距池室侧壁为池室宽度的25%~35%时,池室内水流流态较合理,能够显著提高过鱼效率。
In order to investigate the effects of slot position on the hydraulic characteristics of a vertical slot fishway pool,the RNG k-ε turbulence model and velocity-pressure coupling SIMPLE algorithm were used to numerically simulate the fishway under different working conditions.The results indicate that the slot position rarely influence the pattern of mainstream flow,the attenuation of velocity along main stream,and the velocity distribution at the vertical slot section.The slot position affects the distribution,area,and flow field of the recirculation zone by changing the location of the mainstream zone.When the distance between the vertical slot and the sidewall is 25% to 35% of the pool width,the flow pattern in the fishway is reasonable and the efficiency of fish passing is significantly improved.
出处
《水利水电科技进展》
CSCD
北大核心
2017年第5期69-73,83,共6页
Advances in Science and Technology of Water Resources
基金
中央高校基本科研业务费专项(2016B42014)
长江学者和创新团队发展计划(IRT1233)
关键词
竖缝式鱼道
竖缝位置
水力特性
数值模拟
vertical slot fishway
vertical slot position
hydraulic characteristics
numerical simulation
