Nonlinear Hydrodynamic Pressures on Dam Faces with Arbitrary Reservoir Shapes

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by Bang-Fuh Chen, Natl Sun Yat-Sen Univ, Kaohsiung, Taiwan,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: A finite-difference method was used to calculate the nonlinear hydrodynamic pressures acting on the rigid dam faces during earthquakes. The geometry of the reservoir is in a realistic shape, that is, the dam face may be non-vertical and the reservoir bottom non-horizontal. Nonlinearity of free surface flow and convective acceleration are included in the analysis. The numerical results of the onset hydrodynamic pressures acting on a constant sloped dam face and reservoir bottom due to a constant ground acceleration are compared very well with those of the exact solution. Small variations reflect the minor difference of the reservoir geometry between those two cases. The rises of the water surface and the increases of hydrodynamic pressures on dam faces are also reported.

Subject Headings: Reservoirs | Hydrodynamics | Dams | Nonlinear analysis | Geometrics | Free flow | Hydrologic models | Finite difference method |

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