Results 51 to 60 of about 1,594 (139)

Bivariate High‐Accuracy Hermite‐Type Multiquadric Quasi‐Interpolation Operators

Journal of Mathematics, Volume 2025, Issue 1, 2025.
In this paper, a kind of Hermite‐type multiquadric quasi‐interpolation operator is constructed by combining an extended univariate multiquadric quasi‐interpolation operator with a bivariate Hermite interpolation polynomial. Some error bounds in terms of the modulus of continuity of high order and Peano representations for the error are given. Numerical
Ruifeng Wu, Pramita Mishra
wiley   +1 more source

An Analytical Approach to Solve a System of 2D Nonlinear Volterra–Fredholm Integral Equations on Nonrectangular Domains Based on Radial Basis Functions

Journal of Mathematics, Volume 2025, Issue 1, 2025.
We aim to introduce a numerical method to solve a system of two‐dimensional nonlinear integral equations of Volterra–Fredholm type with the second kind on nonrectangular domains. The method estimates the solutions of the system by a discrete collocation method based on radial basis functions constructed on scattered points.
Mohsen Jalalian, Manochehr Kazemi, Mohammad Esmael Samei, Chang Phang   +3 more
wiley   +1 more source

Remeshing in the finite cell method for different types of geometry descriptions

Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 4, December 2024.
Abstract The numerical structural analysis of problems with complex geometries can be challenging, especially if standard finite elements are used. In contrast, immersed methods, such as the finite cell method, relieve the mesh generation such that simply shaped elements/cells can be used.
Roman Sartorti, Alexander Düster
wiley   +1 more source

A shape optimization pipeline for marine propellers by means of reduced order modeling techniques

International Journal for Numerical Methods in Engineering, Volume 125, Issue 7, 15 April 2024.
Abstract In this article, we propose a shape optimization pipeline for propeller blades, applied to naval applications. The geometrical features of a blade are exploited to parametrize it, allowing to obtain deformed blades by perturbating their parameters. The optimization is performed using a genetic algorithm that exploits the computational speed‐up
Anna Ivagnes, Nicola Demo, Gianluigi Rozza   +2 more
wiley   +1 more source

Wetlands Water Level Measurements From the New Generation of Satellite Laser Altimeters: Systematic Spatial‐Temporal Evaluation of ICESat‐2 and GEDI Missions Over the South Florida Everglades

Water Resources Research, Volume 60, Issue 3, March 2024.
Abstract The ICESat‐2 and GEDI missions were launched in 2018, becoming the new generation of space‐borne laser altimeters. These missions provide unprecedented global geodetic elevations, opening great opportunities for water level monitoring. The potential of these altimeters has been demonstrated in open‐water environments such as lakes, rivers, and
Sebastián Palomino‐Ángel, Shimon Wdowinski, Shanshan Li   +2 more
wiley   +1 more source

Applying multiquadric quasi-interpolation for boundary detection

Computers & Mathematics with Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qinjiao Gao, Zongmin Wu, Shenggang Zhang
openaire   +2 more sources

Inverse multiquadric kernel‐based neuro heuristic approach to analyze the unsteady MHD nanofluid flow via permeable elongating surface

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 104, Issue 2, February 2024.
In this study, a novel neuro heuristic approach is designed to investigate the flow properties of magnetohydrodynamic (MHD) nanofluid along an exponentially extending sheet with a permeable medium with the impact of radiation as well as fluctuating heat source/sink.
Zeeshan Ikram Butt, Iftikhar Ahmad, Syed Ibrar Hussain, Muhammad Asif Zahoor Raja, Muhammad Shoaib, Hira Ilyas   +5 more
wiley   +1 more source

A univariate quasi-multiquadric interpolationwith better smoothness

Computers & Mathematics with Applications, 2004
A univariate quasi-interpolation scheme is proposed which is derivative-free and efficient. Since it is a quasi-interpolation method, no linear systems need to be solved for computing the required coefficients; this makes it also suitable for smoothing.
openaire   +2 more sources

Using Time‐Space Double Radial Basis Function Method to Solve High‐Dimensional PDEs Arising from Multiasset Option Pricing

Discrete Dynamics in Nature and Society, Volume 2024, Issue 1, 2024.
This paper develops a time‐space double radial basis function (TSDRBF) method to solve PDEs arising from multiasset option pricing. By TSDRBF discretization for the high‐dimensional PDEs, a linear system (LS) is obtained. After solving the LS, multi‐asset options of European and American style are restored, with number N of space discretization, number
Zhiqiang Zhou, Hongying Wu, Caijuan Kang, You Wu, Chun Wei   +4 more
wiley   +1 more source

A MLPG Meshless Method for Numerical Simulation of Unsteady Incompressible Flows

Journal of Applied Fluid Mechanics, 2017
This article presents a numerical algorithm using the Meshless Local PetrovGalerkin (MLPG) method for numerical simulation of unsteady incompressible flows, governed by the Navier–Stokes equations via the stream function–vorticity (ψ–ω) formulation.
Iraj Saeedpanah
doaj