Data concerning the statistical properties of pressure fluctuations on the containment structure associated with the hydraulic jump have been studied at the St. Anthony Falls Hydraulic Laboratory. The incident Froude numbers were investigated through the practical range from 4 to 9. The mean square of the fluctuating pressure, the mean pressure, and the power spectrum were determined as a function of position under the jump. In addition, mean and rms turbulent velocity profiles and entrained air concentration profiles throughout the jump volume were determined.
The principal tests were performed in a channel 20 inches wide and 3 feet deep. Other tests at a larger scale were performed in a flume 9 feet wide and 6 feet deep to assist in an evaluation of the scaling properties of the various statistical parameters. The data indicate that the rapid rate of energy dissipation near the toe of the jump leads to a maximum rms fluctuation pressure on the bed of about 5 per cent of the incoming velocity head. The location of the maximum pressure fluctuation is approximately midway under the roller of the jump.
Schiebe, F. R. and Bowers, C. E., "Boundary Pressure Fluctuations Due to Macroturbulence in Hydraulic Jumps" (1971). Symposia on Turbulence in Liquids. 84.
Symposium on Turbulence in Liquids (1971: Oct. 4-6, Rolla, MO)
Chemical and Biochemical Engineering
Article - Conference proceedings
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