研究了高宽比和壁面粗糙度对压力损失、二次流动和紊流强度的影响。
The influences of the aspect ratio and wall roughness on the coolant flow characteristics, which mainly involve pressure loss, secondary flow and turbulence intensity, were investigated.
紊流强度的分布规律从铅垂方向到水平方向随测量角度的增大而趋于对称。
Asymmetric profile of turbulence intensity is eventurally reached when measuring direction is changed from vertical and inclined to horizontal ones.
单股和双股射流塘底脉动压强系数与近壁紊流强度的关系可用对数曲线表述。
The relationship of the fluctuating pressure coefficient on wall and the turbulent intensity near the wall can be described with logarithmic curve.
角区旋涡及泄漏涡影响区域紊流强度较高，其中径向分量最高，远大于轴向和切向分量。
The radial component is the highest of the three turbulence intensities in the corner vortex or leakage vortex region.
超声波能够使水产生紊流，使紫外线强度照射更加均匀、无死角，杀菌更高效。
Ultrasonic can make water produce turbulence, make the ultraviolet radiation intensity is more uniform, no dead Angle, more efficient sterilization.
超声波能够使水产生紊流，使紫外线强度照射更加均匀、无死角，杀菌更高效。
Ultrasonic can make water produce turbulence, make the ultraviolet radiation intensity is more uniform, no dead Angle, more efficient sterilization.
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