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Impulse wave run-over: experimental benchmark study for numerical modelling

Fuchs, Helge ; Heller, Valentin ; Hager, Willi

In: Experiments in Fluids, 2010, vol. 49, no. 5, p. 985-1004

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    Title
    • Impulse wave run-over: experimental benchmark study for numerical modelling
    Author
    • Fuchs, Helge. Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, 8092, Zurich, Switzerland
    • Heller, Valentin. School of Civil Engineering and the Environment, University of Southampton, SO17 1BJ, Highfield, Southampton, UK
    • Hager, Willi. Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich, 8092, Zurich, Switzerland
    Document Type
    • Postprint
    Classification
    • Engineering
    OAI-PMH Identifier
    • oai:doc.rero.ch:321502
    Summary
    This research intends to provide a detailed data basis for numerical modelling of impulse waves. Three tests are described involving a rectangular wave channel, in which a trapezoidal ‘breakwater' was inserted to study wave run-over. In addition, a reference test is also described, in which the breakwater was removed. Two-dimensional impulse waves were generated by means of subaerial granular slides accelerated by a pneumatic landslide generator into the water body. Wave propagation and run-over over the artificial breakwater are documented by a set of high-quality photographs. Water surface profiles were recorded using capacitance wave gages upstream and downstream of the breakwater, and velocity vector fields were determined for the run-over zone by means of Particle Image Velocimetry. The measurements are compared with predictive formulae for wave features and wave non-linearity. The present data set involves both simple channel topography and wave features to allow for numerical simulations under basic laboratory conditions