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DE97749199

Publication Date	1996
Personal Author	Hervouet, J. M.; Rouge, D.
Page Count	31
Abstract	The circumstances of the Malpasset dam-break in 1959 in tue south of France are recalled. This dam was not EDF owned but the data are used to validate numerical tools for the flood wave simulation. The available data are the survey of the domain after the accident, the results of a 1/400 scale physical model built at NHL, and the results of a 1-dimensional computation. After a discussion of available data, a sensitivity study is performed to evaluate some physical parameters of the equations, mainly the diffusion coefficient and the bottom friction. The friction appears to be the most important. An accuracy of 3.4 % on the wave celerity is obtained between remarkable points where the arrival time of the water is perfectly known. The study concludes that 2D simulations of flood waves are already possible on domains with a length of some tenths of kilometers. Larger domains (100 to 400 km) are probably also within reach supercomputers, but the speed up that could give parallel architectures is however necessary, especially for workstations. (authors) 8 refs.
Keywords	Dams Floods Ruptures Liquid Flow T Codes Topography Two-Dimensional Calculations Velocity Foreign technology EDB/130800
Source Agency	TIC Foreign Exchange Reports
Corporate Authors	Electricite de France, Clamart.
Supplemental Notes	French, English.
Document Type	Technical Report
NTIS Issue Number	199803

Simulation numerique de la rupture du barrage de Malpasset. (Numerical simulation of the Malpasset dam-break flood wave).

Simulation numerique de la rupture du barrage de Malpasset. (Numerical simulation of the Malpasset dam-break flood wave).
DE97749199

Publication Date	1996
Personal Author	Hervouet, J. M.; Rouge, D.
Page Count	31
Abstract	The circumstances of the Malpasset dam-break in 1959 in tue south of France are recalled. This dam was not EDF owned but the data are used to validate numerical tools for the flood wave simulation. The available data are the survey of the domain after the accident, the results of a 1/400 scale physical model built at NHL, and the results of a 1-dimensional computation. After a discussion of available data, a sensitivity study is performed to evaluate some physical parameters of the equations, mainly the diffusion coefficient and the bottom friction. The friction appears to be the most important. An accuracy of 3.4 % on the wave celerity is obtained between remarkable points where the arrival time of the water is perfectly known. The study concludes that 2D simulations of flood waves are already possible on domains with a length of some tenths of kilometers. Larger domains (100 to 400 km) are probably also within reach supercomputers, but the speed up that could give parallel architectures is however necessary, especially for workstations. (authors) 8 refs.
Keywords	Dams Floods Ruptures Liquid Flow T Codes Topography Two-Dimensional Calculations Velocity Foreign technology EDB/130800
Source Agency	TIC Foreign Exchange Reports
Corporate Authors	Electricite de France, Clamart.
Supplemental Notes	French, English.
Document Type	Technical Report
NTIS Issue Number	199803