Search results for "Shallow"

showing 4 items of 144 documents

The FLO Diffusive 1D-2D Model for Simulation of River Flooding

2016

An integrated 1D-2D model for the solution of the diffusive approximation of the shallow water equations, named FLO, is proposed in the present paper. Governing equations are solved using the MArching in Space and Time (MAST) approach. The 2D floodplain domain is discretized using a triangular mesh, and standard river sections are used for modeling 1D flow inside the section width occurring with low or standard discharges. 1D elements, inside the 1D domain, are quadrilaterals bounded by the trace of two consecutive sections and by the sides connecting their extreme points. The water level is assumed to vary linearly inside each quadrilateral along the flow direction, but to remain constant …

floodplainlcsh:Hydraulic engineering010504 meteorology & atmospheric sciencesDiscretization0208 environmental biotechnologyGeography Planning and DevelopmentGeometry02 engineering and technologyAquatic ScienceClassification of discontinuities01 natural sciencesBiochemistry1D-2D couplingSettore ICAR/01 - Idraulicalcsh:Water supply for domestic and industrial purposeslcsh:TC1-978Triangle meshBoundary value problemExtreme pointShallow water equations0105 earth and related environmental sciencesWater Science and TechnologyPhysicsHydrologylcsh:TD201-500Quadrilateralshallow water equationsNumerical analysisnumerical method020801 environmental engineeringmain channelfloodplains1D-2D coupling; floodplains; main channel; numerical method; shallow water equationsWater; Volume 8; Issue 5; Pages: 200
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M8_Microfluidics_for_CNT

2018

A comparation of two sorting strategies. While the shallow channel guides the droplets more precisely to the sorting point, the confined droplets are more vulnerable to coalescence and break-up. The deep channel lowers the positioning precision, however, the droplets are more stable.

Physics::Fluid Dynamicsshallow sortingconfined regimePhysics::Atomic and Molecular Clustersmicrofluidicsfree regimedeep sorting
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Slight differences in community structure and biodiversity of fish associated to a Cymodocea nodosa meadow in a shallow CO2 vent

2018

Naturally acidified environments are used to test ecological hypotheses about the effects of ocean acidification on complex communities. Here, we used a shallow Mediterranean CO2 vent to study the coastal fish assemblages associated to Cymodocea nodosa seagrass meadows, long-term exposed to high pCO2 / low pH conditions. In particular, by using underwater visual census method, we assessed the structure and the biodiversity of fish assemblages living in a low pH site and in two control sites, in two periods of the year featured by dissimilar seagrass structure. The aim of this study was to test the effect of different pH on fish assemblages mediated by the habitat-forming structural species …

Fish assemblage shallow CO2 vent underwater visual census ocean acidification seagrass Cymodocea nodosa
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M5_Microfluidics_for_CNT

2018

The features of the sorting junction. Pressure balancer helps to equilibrate the pressure difference created by the presence of a droplet. The transition from shallow to deep channel mediates the transition from free to confined regime. The droplets are separated in the sorting junction according to the flow rate ratio.

Physics::Fluid Dynamicspressure balancershallow-to-deep transitionhydrodynamic sortingdigestive oral and skin physiologymicrofluidicseye diseases
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