LAUBER HAGER PDF

such as Lauber and Hager reported their experiments on dam-break flows in a horizontal and sloping channel (Lauber and Hager, a, b). W.H. Hager and G. Del Giudice, “Movable bed roughness in alluvial rivers – Discussion”, . G. Lauber and W.H. Hager, “EXPERIMENTS TO DAMBREAK WAVE. Lauber and Hager () derived a solution from the shallow water equations with friction slope in the source term, subjected to the initial condition CDF T=21/2 .

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In this study, a series of dam-break experiments was carried out to investigate the influence of the initial downstream water depth, water head settings, and upstream reservoir length on the dam-break wave movement. The system can’t hhager the operation now.

Experimental Study on Dam-Break Hydrodynamic Characteristics Under Different Conditions

Experiments to dambreak wave: Then, the positive and negative wave fronts are analytically determined, lajber on the characteristic equations. Hydrodynamic formulae proposed by Lauber and Hager [1] are not applicable for the wet-bed condition, although their solution of wave profiles for the initial dry-bed condition performs well at the location farther from the gate.

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The non-dimensional average front laubef of the wet-bed condition, which mainly depends on the initial water head setting, is smaller than that of the dry-bed case. Even with the same initial water head setting, the water level and flow velocity variations of the dam-break wave propagating downstream on the wet bed show noteworthy differences in flow characteristics compared to haegr initial dry bed, caused by the interactions between the upstream and downstream water.

Return articles authored by. Return articles published in. My profile My library Alerts Metrics. Return articles dated between. Dambreak waves in a smooth rectangular and horizontal channel are described.

November 28, Published: My profile My library. Dambreak flows in a smooth, rectangular channel are considered.

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Views over last 60 days: Cited by Related articles All 6 versions. Considering the requirements for precise data measurement with high temporal resolution, the synchronization of different instruments was realized based on high-speed camera recording.

Articles Case law Profiles. In all experiments, the abrupt rupture on an absolutely dry tailwater channel was modelled. Based nager a literature review, the conditions required for Froude similarity are first derived.

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September 16, Accepted: The positive and negative wave fronts are determined based on the characteristic equations. The instantaneous water level and flow velocity were measured at two specified downstream locations. In addition, the maximum water level and flow velocity at the downstream location are mainly controlled by the initial water head setting, while the duration of the large values is influenced by the reservoir length.

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Further, the effect of the relative reservoir length on the wave maximum is specified and a novel dimensionless coordinate X is introduced, that accounts for both relative reservoir length and non-dimensional tailwater location. Also, the drying front is computed and the effect of viscosity is analyzed.

Cited by 62 Related articles All 3 versions.

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