scholarly journals Forcing for a Cascaded Lattice Boltzmann Shallow Water Model

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 439 ◽  
Author(s):  
Sara Venturi ◽  
Silvia Di Francesco ◽  
Martin Geier ◽  
Piergiorgio Manciola
Keyword(s):  
Shallow Water ◽  
Lattice Boltzmann ◽  
Model Performance ◽  
Lattice Boltzmann Model ◽  
Water Model ◽  
Two Dimensional ◽  
Shallow Water Model ◽  
Basic Scheme ◽  
Order Scheme ◽  
Boltzmann Model

This work compares three forcing schemes for a recently introduced cascaded lattice Boltzmann shallow water model: a basic scheme, a second-order scheme, and a centred scheme. Although the force is applied in the streaming step of the lattice Boltzmann model, the acceleration is also considered in the transformation to central moments. The model performance is tested for one and two dimensional benchmarks.

scholarly journals Modelling Weirs in Two-Dimensional Shallow Water Models

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2152
Author(s):  
Gonzalo García-Alén ◽  
Olalla García-Fonte ◽  
Luis Cea ◽  
Luís Pena ◽  
Jerónimo Puertas
Keyword(s):  
Experimental Data ◽  
Shallow Water ◽  
Shallow Water Equations ◽  
Water Model ◽  
Two Dimensional ◽  
Shallow Water Model ◽  
Experimental Dataset ◽  
River Hydraulics ◽  
Shallow Water Models ◽  
Water Models

2D models based on the shallow water equations are widely used in river hydraulics. However, these models can present deficiencies in those cases in which their intrinsic hypotheses are not fulfilled. One of these cases is in the presence of weirs. In this work we present an experimental dataset including 194 experiments in nine different weirs. The experimental data are compared to the numerical results obtained with a 2D shallow water model in order to quantify the discrepancies that exist due to the non-fulfillment of the hydrostatic pressure hypotheses. The experimental dataset presented can be used for the validation of other modelling approaches.

scholarly journals Two-dimensional turbulence in a massless fluid with a relativistic lattice Boltzmann model

AIP Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 035333
Author(s):  
Mark Watson
Keyword(s):  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Two Dimensional ◽  
Boltzmann Model

SW2D-GPU: A two-dimensional shallow water model accelerated by GPGPU

2021 ◽  
pp. 105205
Author(s):  
Tomas Carlotto ◽  
Pedro Luiz Borges Chaffe ◽  
Camyla Innocente dos Santos ◽  
Seungsoo Lee
Keyword(s):  
Shallow Water ◽  
Water Model ◽  
Two Dimensional ◽  
Shallow Water Model

Overland flow computations in urban and industrial catchments from direct precipitation data using a two-dimensional shallow water model

2010 ◽  
Vol 62 (9) ◽  
pp. 1998-2008 ◽  
Author(s):  
L. Cea ◽  
M. Garrido ◽  
J. Puertas ◽  
A. Jácome ◽  
H. Del Río ◽  
...  
Keyword(s):  
Shallow Water ◽  
Surface Runoff ◽  
Experimental Validation ◽  
Water Model ◽  
Storm Event ◽  
Precipitation Data ◽  
Two Dimensional ◽  
Shallow Water Model ◽  
Sewer Network ◽  
Direct Precipitation

This paper presents the experimental validation and the application to a real industrial catchment of a two-dimensional depth-averaged shallow water model used for the computation of rainfall-runoff transformation from direct precipitation data. Instead of using the common approach in flood inundation modelling, which consists in computing the water depth and velocity fields given the water discharge, in this study the rainfall intensity is imposed directly in the model, the surface runoff being generated automatically. The model considers infiltration losses simultaneously with flow simulation. Gullies are also included in the model, although the coupling between the surface runoff and the sewer network is not considered. Experimental validation of the model is presented in several simplified laboratory configurations of urban catchments, in which the surface runoff has been measured for different hyetographs. The application to a real industrial catchment includes a sewer network flow component, which is solved with the SWMM model. The numerical predictions of the discharge hydrograph generated by a 12 hours storm event are compared with field measurements, providing encouraging results.

Well-balanced open boundary condition in a lattice Boltzmann model for shallow water with arbitrary bathymetry

2018 ◽  
Vol 230 ◽  
pp. 89-98 ◽  
Author(s):  
Álvaro Salinas ◽  
Claudio E. Torres ◽  
Orlando Ayala
Keyword(s):  
Boundary Condition ◽  
Shallow Water ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Open Boundary ◽  
Open Boundary Condition ◽  
Boltzmann Model

A two-dimensional finite element drying-wetting shallow water model for rivers and estuaries

2000 ◽  
Vol 23 (4) ◽  
pp. 359-372 ◽  
Author(s):  
Mourad Heniche ◽  
Yves Secretan ◽  
Paul Boudreau ◽  
Michel Leclerc
Keyword(s):  
Finite Element ◽  
Shallow Water ◽  
Water Model ◽  
Two Dimensional ◽  
Shallow Water Model ◽  
Dimensional Finite Element

Wind-driven ocean circulation in shallow water lattice Boltzmann model

2005 ◽  
Vol 22 (3) ◽  
pp. 349-358 ◽  
Author(s):  
Zhong Linhao ◽  
Feng Shide ◽  
Gao Shouting
Keyword(s):  
Shallow Water ◽  
Ocean Circulation ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Water Lattice ◽  
Boltzmann Model

On the effect of the intrinsic viscosity in a two-layer shallow water lattice Boltzmann model of axisymmetric density currents

2013 ◽  
Vol 51 (6) ◽  
pp. 668-680 ◽  
Author(s):  
Pietro Prestininzi ◽  
Giampiero Sciortino ◽  
Michele La Rocca
Keyword(s):  
Shallow Water ◽  
Intrinsic Viscosity ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Density Currents ◽  
Water Lattice ◽  
Boltzmann Model
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