Wave Reflection at Tainter Gates. Hydraulic Model Investigation
1992
Smith, Ernest R. | Herrington, C. R.
The design of tainter gates includes wave pressure calculations using the superposition of the incident and perfectly reflected wave at the front face of the gate. However, waves are not expected to be perfectly reflected, since wave energy is dissipated on the curved front face of the gate and lost due to overtopping of the gate. This report documents a study in which wave reflection and water surface elevations above the gate were measured in a wave tank at a 1:30 model scale for four wave conditions at three water levels each. The resulting data are to be used to reevaluate the design calculations for wave forces on tainter gates. In the study, reflection coefficients ranged from 0.42 to 0.93 and were highest at the lowest water level tested. Maximum water surface elevation occurred at a water level slightly below the tainter gate crest. The combination of water elevation, wave period, and wave reflection contributed to the higher elevation.
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