【摘要】 整流网对降低水流湍流度有明显作用。在本实验条件下,加网后一般可使湍流度降低50％～70％;此外能极大地改善湍流度沿垂线的分布,使之趋于均匀。经比较发现40目网对提高水流品质效果最佳,其相应的密实度σ=0.3,和他人在风洞实验中建议σ<0.3相当吻合。更多还原

【Abstract】 The experimental results indicate that the screens can significantly reduce the flow turbulence intensity. In the present study, screens can generally reduce the flow turbulence intensity by as much as 50% to 70%, greatly improve its distribution in the vertical direction, and make it uniform. By analysing the experimental results, it is found that the screen with solidity σ = 0.3 can efficiently improve the waterflow, and the value agrees well with σ<0.3 suggested by other workers in wind tunnel experiments.更多还原