Results 21 to 30 of about 38,753 (164)

Implicit particle filtering for models with partial noise, and an application to geomagnetic data assimilation [PDF]

open access: yesNonlinear Processes in Geophysics, 2012
Implicit particle filtering is a sequential Monte Carlo method for data assimilation, designed to keep the number of particles manageable by focussing attention on regions of large probability.
M. Morzfeld, A. J. Chorin
doaj   +1 more source

ESERK Methods to Numerically Solve Nonlinear Parabolic PDEs in Complex Geometries: Using Right Triangles

open access: yesFrontiers in Physics, 2020
In this paper Extrapolated Stabilized Explicit Runge-Kutta methods (ESERK) are proposed to solve nonlinear partial differential equations (PDEs) in right triangles.
Jesús Martín-Vaquero
doaj   +1 more source

Melting rheology of three-dimensional Maxwell nanofluid (graphene-engine-oil) flow with slip condition past a stretching surface through Darcy-Forchheimer medium

open access: yesResults in Physics, 2023
Nanofluid has numerous industrial and engineering applications, especially for the improvement of heat transmission. Engine oil is a highly versatile lubricant that is extensively used across diverse industries and engineering fields for a wide range of ...
Fuzhang Wang   +6 more
doaj   +1 more source

Nonlinear Vibration of Functionally Graded Graphene Nanoplatelets Polymer Nanocomposite Sandwich Beams

open access: yesApplied Sciences, 2020
We provide an analytical investigation of the nonlinear vibration behavior of thick sandwich nanocomposite beams reinforced by functionally graded (FG) graphene nanoplatelet (GPL) sheets, with a power-law-based distribution throughout the thickness.
Mohammad Sadegh Nematollahi   +3 more
doaj   +1 more source

Heat transfer in micropolar hybrid nanofluid flow past a vertical plate in the presence of thermal radiation and suction/injection effects

open access: yesPartial Differential Equations in Applied Mathematics, 2022
Hybrid nanofluid are considered as advanced nanofluid, as shown by their thermal properties and budding benefits that aid the drive of increasing the heat transfer rate.
Priya Gumber   +3 more
doaj   +1 more source

Higher order multi-step Jarratt-like method for solving systems of nonlinear equations: Application to PDEs and ODEs

open access: yesComputers & Mathematics with Applications, 2015
This paper proposes a multi-step iterative method for solving systems of nonlinear equations with a local convergence order of 3m - 4, where in (>= 2) is the number of steps. The multi-step iterative method includes two parts: the base method and the multi-step part.
Fayyaz Ahmad   +3 more
openaire   +4 more sources

Higher order multi-step iterative method for computing the numerical solution of systems of nonlinear equations: Application to nonlinear PDEs and ODEs

open access: yesApplied Mathematics and Computation, 2015
In the present study, we consider multi-step iterative method to solve systems of nonlinear equations. Since the Jacobian evaluation and its inversion are expensive, in order to achieve a better computational efficiency, we compute Jacobian and its inverse only once in a single cycle of the proposed multi-step iterative method.
Malik Zaka Ullah   +3 more
openaire   +3 more sources

Thermal Analysis of 3D Electromagnetic Radiative Nanofluid Flow with Suction/Blowing: Darcy–Forchheimer Scheme

open access: yesMicromachines, 2021
This paper discusses the Darcy–Forchheimer three dimensional (3D) flow of a permeable nanofluid through a convectively heated porous extending surface under the influences of the magnetic field and nonlinear radiation. The higher-order chemical reactions
Hammad Alotaibi, Mohamed R. Eid
doaj   +1 more source

Separation method of semi-fixed variables together with dynamical system method for solving nonlinear time-fractional PDEs with higher-order terms

open access: yesNonlinear Dynamics, 2021
Abstract It is well known that methods for solving fractional-order PDEs are grossly inadequate compared with integer-order PDEs. In this paper, a new approach which combined with the separation method of semi-fixed variables and dynamical system method is introduced.
openaire   +1 more source

A class of second-order geometric quasilinear hyperbolic PDEs and their application in imaging science [PDF]

open access: yes, 2019
In this paper, we study damped second-order dynamics, which are quasilinear hyperbolic partial differential equations (PDEs). This is inspired by the recent development of second-order damping systems for accelerating energy decay of gradient flows.
Dong, Guozhi   +2 more
core   +3 more sources

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