Relationship between pressure fluctuations on the bed wall and free surface fluctuations in weak hydraulic jump
The relation of time averaged conjugate depth and the characteristic of the length of hydraulic jump have been almost clarified. The time averaged pressure distributions around the end sill are also measured by several researchers. On the other hand, bed materials near the roller of hydraulic jump are sometimes picked up by the pressure uctuations, so that it is quite important to investigate characteristics of the pressure uctuations in and around the hydraulic jump. In this study, the uctuations of bed pressure in and around roller and also instantaneous ow depth are measured with the pressure gauges and supersonic wave gauges, respectively. It was found that oscillations of roller in uences on the instantaneous ow depth and bed pressure and also that the instantaneous bed pressure concerns with the instantaneous free surface uctuations.
hydraulic jump roller pressure uctuation pressure gauge supersonic wave gauge
K.Onitsuka J.Akiyama M.Shige-eda H.Ozeki S.Gotoh T.Shiraishi
Department of Civil Engineering, Kyushu Institute of Technology, Kitakyushu 805-8550, Japan Toyota Production Engineering Corporation., Fukuoka 810-0073, Japan MATSUO Consultants Co.,Ltd., Kitakyushu 805-0061, Japan NTT DATA SYSTEMS Corporation., Tokyo 141-0031, Japan
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）