We present a method to use lagrangian data from remote sensing observation in a variational data assimilation process for a river hydraulics model based on the bidimensional shallow water equations. The trajectories of particles advected by the flow can be extracted from video images and are used in addition to classical eulerian observations. This lagrangian data brings information on the surf...

Institute of Hydraulics and Transportation Infrastructures Marche Polytechnical University, Via Brecce Bianche, 60131 Ancona, Italy, Email: [email protected] Department of Science and Technology University of Verona, Strada Le Grazie 15, Cà Vignal 37134 Verona, Italy. Department of Environmental Sciences University of Venice “Cà Foscari”, Calle Larga Santa Marta, Dorsoduro 2137 Venice, Italy.

This paper highlights a preliminary study on the potential of a tipping flush gate to be used in an open storm drain to remove sediment. The investigation was carried out by using a plasboard model of the tipping flush gate installed in a rectangular flume. A steady flow experiment was carried out to determine the discharge coefficients and also the outflow relationship of the tipping flush gat...

Several different fuel failure criteria have been used in previously NRC-sponsored SFP accident studies. Benjamin, et. al. used the onset of runaway fuel clad oxidation as the fuel failure criterion in NUREG/CR-0649 [Ref. 1]. This criterion was criticized because clad rupture can occur at a relatively low temperature causing a gap release. The consequences of gap release can be significant if t...