Publications related to Numerical simulation of sediment dynamics with free surface flows

Reservoir Sediment Management Using Replenishment : A Numerical Study Of Nunome Dam

Anton Schleiss, Sameh Ahmad Kantoush, Sébastien Cajot

Improving the integration of dams in the natural environment and recovering their storage capacity lost to sedimentation are two topics of growing concern. To address these two issues, the accumulated sediments are being relocated down into the dam's tail ...

2012

Numerical simulation of a new sand trap flushing system

Giovanni De Cesare, Milad Daneshvari

Typical sand trap flushing systems, such as Büchi and Dufour, require water volumes up to six times the deposited sediment volume for efficient flushing. Furthermore, complete sediment removal particularly in Dufour sand traps can only be realized with dra ...

2012

Global Solutions to a Non-Local Diffusion Equation with Quadratic Non-Linearity

Joachim Krieger

In this paper we prove the global in time well-posedness of the following non-local diffusion equation with

\alpha\, \varepsilon [0, 2/3)

:

\partial_tu=\{(-\Delta)^{-1}u\}\Delta u+\alpha u^2, \,\, u(t=0)=u_0

. The initial condition

u_0

is positive, rad ...

2012

Fractional Brownian motion and anomalous diffusion in vibrated granular materials

Daniele Mari, Gérard Gremaud, Alessandro Luigi Sellerio

We propose a new approach to the study of diffusion dynamics in vibrated granular systems. The dynamic of a granular material is mainly defined by dry friction interactions. This type of interaction is difficult to model for a large quantity of particles. ...

2012

Dynamics of fluid mixtures in nanospaces

A multicomponent extension of our recent theory of simple fluids [U. M. B. Marconi and S. Melchionna, J. Chem. Phys. 131, 014105 (2009)] is proposed to describe miscible and immiscible liquid mixtures under inhomogeneous, nonsteady conditions typical of co ...

2011

DNS of buoyancy-driven flows and Lagrangian particle tracking in a square cavity at high Rayleigh numbers

Michel Deville, Emmanuel Leriche, Alfredo Soldati, Riccardo Puragliesi, Abdelouahab Dehbi

In this work we investigate numerically particle deposition in the buoyancy driven flow of the differentially heated cavity (DHC). We consider two values of the Rayleigh number (Ra = 10(9), 10(10)) and three values of the particle diameter (d(p) = 15, 25, ...

2011

Towards oscillation-free implementation of the immersed boundary method with spectral-like methods

Jiannong Fang, Marc Parlange, Chad Higgins, Marc Diebold

It is known that, when the immersed boundary method (IBM) is implemented within spectral-like methods, the Gibbs oscillation seriously deteriorates the calculation of derivatives near the body surface. In this paper, a radial basis function (RBF) based smo ...

Elsevier2011

Improvement of the one-dimensional dissolved-solute convection equation using the QUICKEST-ULTIMATE algorithm

Rakesh Chawla, Davide Bertolotto

The U.S.-NRC best-estimate system code TRACE adopts a finite volumes, first-order upwind discretization scheme to solve the dissolved-solute convection equation. Such a scheme is known to strongly suffer from numerical diffusion, which can be a significant ...

Elsevier2011

IsoGeometric Analysis: stable elements for the 2D Stokes equation

Annalisa Buffa

In this paper, we discuss the application of IsoGeometric Analysis to incompressible viscous flow problems. We consider, as a prototype problem, the Stokes system and we propose various choices of compatible spline spaces for the approximations to the velo ...

2011

Extended variational formulation for heterogeneous partial differential equations

Alfio Quarteroni

We address the coupling of an advection equation with a diffusion-advection equation, for solutions featuring boundary layers. We consider non-overlapping domain decompositions and we face up the heterogeneous problem using an extended variational formulat ...

2011

Numerical simulation of sediment dynamics with free surface flows

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Reservoir Sediment Management Using Replenishment : A Numerical Study Of Nunome Dam

Numerical simulation of a new sand trap flushing system

Global Solutions to a Non-Local Diffusion Equation with Quadratic Non-Linearity

Fractional Brownian motion and anomalous diffusion in vibrated granular materials

Dynamics of fluid mixtures in nanospaces

DNS of buoyancy-driven flows and Lagrangian particle tracking in a square cavity at high Rayleigh numbers

Towards oscillation-free implementation of the immersed boundary method with spectral-like methods

Improvement of the one-dimensional dissolved-solute convection equation using the QUICKEST-ULTIMATE algorithm

IsoGeometric Analysis: stable elements for the 2D Stokes equation

Extended variational formulation for heterogeneous partial differential equations

Reservoir Sediment Management Using Replenishment : A Numerical Study Of Nunome Dam

Fractional Brownian motion and anomalous diffusion in vibrated granular materials

Numerical simulation of a new sand trap flushing system

Global Solutions to a Non-Local Diffusion Equation with Quadratic Non-Linearity

Dynamics of fluid mixtures in nanospaces

Improvement of the one-dimensional dissolved-solute convection equation using the QUICKEST-ULTIMATE algorithm

DNS of buoyancy-driven flows and Lagrangian particle tracking in a square cavity at high Rayleigh numbers

IsoGeometric Analysis: stable elements for the 2D Stokes equation

Towards oscillation-free implementation of the immersed boundary method with spectral-like methods

Extended variational formulation for heterogeneous partial differential equations