Results 31 to 40 of about 2,652,488 (196)

A Momentum-Conserving Scheme for Flow Simulation in 1D Channel with Obstacle and Contraction

open access: yesFluids, 2021
We consider the extension of the momentum conservative staggered-grid (MCS) scheme for flow simulation in channels with varying depth and width. The scheme is formulated using the conservative properties of the Saint-Venant equations. The proposed scheme
Putu Veri Swastika   +3 more
doaj   +1 more source

On the Uniqueness Classes of Solutions of Boundary Value Problems for Third-Order Equations of the Pseudo-Elliptic Type

open access: yesAxioms, 2020
The paper is devoted to solutions of the third order pseudo-elliptic type equations. An energy estimates for solutions of the equations considering transformation’s character of the body form were established by using of an analog of the Saint-Venant ...
Abdukomil Risbekovich Khashimov   +1 more
doaj   +1 more source

Consistent initial conditions for the Saint-Venant equations in river network modeling [PDF]

open access: yesHydrology and Earth System Sciences, 2017
Initial conditions for flows and depths (cross-sectional areas) throughout a river network are required for any time-marching (unsteady) solution of the one-dimensional (1-D) hydrodynamic Saint-Venant equations.
C.-W. Yu, F. Liu, B. R. Hodges
doaj   +1 more source

Simulation of complex free surface flows [PDF]

open access: yesESAIM: Proceedings and Surveys, 2021
We study the Serre-Green-Naghdi system under a non-hydrostatic formulation, modelling incompressible free surface flows in shallow water regimes. This system, unlike the well-known (nonlinear) Saint-Venant equations, takes into account the effects of the
Benyo Krisztian   +3 more
doaj   +1 more source

Approximation zones of the Saint-Venant equations f flood routing with overbank flow [PDF]

open access: yesHydrology and Earth System Sciences, 2000
The classification of river waves as gravity, diffusion or kinematic waves, corresponds to different forms of the momentum equation in the Saint-Venant system.
R. Moussa, R. Moussa, C. Bocquillon
doaj  

On some numerical methods for solving the 1-D Saint-Venant equations of general flow regime. Part 1: Numerical methods

open access: yesVietnam Journal of Mechanics, 2002
Development of methods for numerical simulation of dike- or dam-break flood is one of essential problems of Fluid Mechanics at the present time. Many numerical methods for solving the 1-D Saint-Venant equations have been proposed. However, the analysis,
Nguyen Van Hanh   +2 more
doaj   +1 more source

On Modeling and Constrained Model Predictive Control of Open Irrigation Canals

open access: yesJournal of Control Science and Engineering, 2017
This paper proposes a model predictive control of open irrigation canals with constraints. The Saint-Venant equations are widely used in hydraulics to model an open canal.
Lihui Cen   +4 more
doaj   +1 more source

Calculation of the horizontal two-dimensional unsteady flows by the method of characteristics

open access: yesVietnam Journal of Mechanics, 2003
This paper will be concerned with the characteristic form of the two dimensional Saint-Venant equation system, the supplementary equations at the boundaries, the methods of characteristics for solving the equation system and some numerical experiments.
Tran Gia Lich   +2 more
doaj   +1 more source

Correspondence between de Saint-Venant and Boussinesq 2: Boussinesq’s professional and private life up to 1886

open access: yesComptes Rendus. Mécanique, 2020
Joseph Boussinesq is among the great physicists of the late 19th and the early 20th centuries, mainly due to his novel techniques to mathematically solve complicated equations by an adopted method of approximations.
Hager, Willi H.   +2 more
doaj   +1 more source

Initial-Boundary Value Problems for Anisotropic Parabolic Equations with Variable Exponents of the Nonlinearity in Unbounded Domains with Conditions at Infinity

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2022
We deal with the initial-boundary value problems with some restrictions at infinity for linear and nonlinear anisotropic parabolic second-order equations in unbounded domains with respect to the spatial variables.
Mykola Bokalo
doaj   +1 more source

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