Results 71 to 80 of about 41,720 (280)

A variant of the method of characteristics

open access: yesComputer Assisted Methods in Engineering and Science, 2023
A variant of the method of characteristics for hyperbolic conservation laws is proposed in this paper. It is based on the time interpolation instead of space interpolation as in the standard method of characteristics.
Mario Šayar   +2 more
doaj  

Riemann problem for a 2 × 2 $2\times 2$ hyperbolic system with time-gradually-degenerate damping

open access: yesBoundary Value Problems, 2023
This paper is focused on the Riemann problem for a 2 × 2 $2\times 2$ hyperbolic system of conservation laws with a time-gradually-degenerate damping. Two kinds of non-self-similar solutions involving the delta-shocks and vacuum are obtained using the ...
Shiwei Li
doaj   +1 more source

On stochastic conservation laws and Malliavin calculus

open access: yes, 2016
For stochastic conservation laws driven by a semilinear noise term, we propose a generalization of the Kru\v{z}kov entropy condition by allowing the Kru\v{z}kov constants to be Malliavin differentiable random variables.
Karlsen, Kenneth Hvistendahl   +1 more
core   +1 more source

Forecasting Electricity Peak Load: Time‐Series Modeling Integrating Economic and Demographic Dynamics—A Case Study From Jordan

open access: yesEnergy Science &Engineering, EarlyView.
Forecasts peak electricity demand in Jordan for grid expansion over the next decade. Introduces a comparative method combining ARIMA, ARIMA‐X, and regression models. Projections show a 41% peak load increase by 2035, reaching around 5300 MW. The findings support capacity planning, pricing strategies, and network expansion.
Rafat Aljarrah   +5 more
wiley   +1 more source

A new central-upwind scheme for solving the shallow water equations [PDF]

open access: yesAUT Journal of Mathematics and Computing
We have conducted a study where we applied one-dimensional central-upwind methods to estimate solutions of the Saint-Venant (SV) system. Our approach carefully considers the source terms associated with bottom topography.
Rooholah Abedian
doaj   +1 more source

Analysis of Energy Consumption, Economic Efficiency and Carbon Emissions of Ice Slurry Direct Supply System: A Case Study of China

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Traditional air conditioners suffer from low energy efficiency and exacerbate grid peak loads. While ice storage offers energy‐saving potential, the systematic regulation of ice packing fraction (IPF) on cooling consumption and its synergy with dynamic carbon emissions remains unexplored.
Di Yang, Wenpeng Hong, Xu Jin
wiley   +1 more source

Structural stability of solutions to the Riemann problem for a non-strictly hyperbolic system with flux approximation

open access: yesElectronic Journal of Differential Equations, 2016
We study the Riemann problem for a non-strictly hyperbolic system of conservation laws under the linear approximations of flux functions with three parameters.
Meina Sun
doaj  

Invariant Solutions and Conservation Laws of the Variable-Coefficient Heisenberg Ferromagnetic Spin Chain Equation

open access: yesFrontiers in Physics, 2020
The variable-coefficient Heisenberg ferromagnetic spin chain (vcHFSC) equation is investigated using the Lie group method. The infinitesimal generators and Lie point symmetries are reported.
Na Liu, Na Liu
doaj   +1 more source

Design of HAWT Rotor for Non‐Uniform Inflow Conditions: A Theoretical and Experimental Approach for Shear Flow

open access: yesEnergy Science &Engineering, EarlyView.
This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak   +2 more
wiley   +1 more source

A Task-Driven Implementation of a Simple Numerical Solver for Hyperbolic Conservation Laws

open access: yesESAIM: Proceedings and Surveys, 2018
This article describes the implementation of an all-in-one numerical procedure within the runtime StarPU. In order to limit the complexity of the method, for the sake of clarity of the presentation of the non-classical task-driven programming environment,
Essadki Mohamed   +4 more
doaj   +1 more source

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