Results 21 to 30 of about 33,031 (111)

NDAWL-PINN: a new non-dimensionalization and multi-task learning approach for efficient training of physics-informed neural networks to solve the shallow water equations

open access: yesEngineering Applications of Computational Fluid Mechanics
The exploration of deep learning methodologies has recently generated significant interest in the use of Physics-Informed Neural Networks (PINNs) to address complex physical problems governed by partial differential equations (PDEs).
Xin Qi   +4 more
doaj   +1 more source

Estimation of vector fields in unconstrained and inequality constrained variational problems for segmentation and registration [PDF]

open access: yes, 2008
Vector fields arise in many problems of computer vision, particularly in non-rigid registration. In this paper, we develop coupled partial differential equations (PDEs) to estimate vector fields that define the deformation between objects, and the ...
Slabaugh, Greg, Ünal, Gözde
core   +1 more source

The use of the mesh free methods (radial basis functions) in the modeling of radionuclide migration and moving boundary value problems [PDF]

open access: yes, 2007
Recently, the mesh free methods (radial basis functions-RBFs) have emerged as a novel computing method in the scientific and engineering computing community.
Runovc, Franc   +2 more
core  

A stabilized radial basis-finite difference (RBF-FD) method with hybrid kernels

open access: yes, 2018
Recent developments have made it possible to overcome grid-based limitations of finite difference (FD) methods by adopting the kernel-based meshless framework using radial basis functions (RBFs). Such an approach provides a meshless implementation and is
Fasshauer, Gregory E   +3 more
core   +1 more source

Nonlinear elliptic equations with high order singularities [PDF]

open access: yes, 2016
We study non-variational degenerate elliptic equations with high order singular structures. No boundary data are imposed and singularities occur along an {\it a priori} unknown interior region. We prove that positive solutions have a universal modulus of
Teixeira, Eduardo V.
core  

Relaxed micromorphic model of transient wave propagation in anisotropic band-gap metastructures

open access: yes, 2018
In this paper, we show that the transient waveforms arising from several localised pulses in a micro-structured material can be reproduced by a corresponding generalised continuum of the relaxed micromorphic type.
Aivaliotis, Alexios   +5 more
core   +1 more source

On Meshfree GFDM Solvers for the Incompressible Navier-Stokes Equations

open access: yes, 2017
Meshfree solution schemes for the incompressible Navier--Stokes equations are usually based on algorithms commonly used in finite volume methods, such as projection methods, SIMPLE and PISO algorithms.
Kuhnert, Joerg   +2 more
core   +1 more source

Thermal Analysis of a Casson Boundary Layer Flow over a Penetrable Stretching Porous Wedge

open access: yesJournal of Mathematics
This work aims to analyze the Casson thermal boundary layer flow over an expanding wedge in a porous medium with convective boundary conditions and ohmic heating.
Dur-e-Shehwar Sagheer   +6 more
doaj   +1 more source

Numerical analysis of non-similar convection flows of a two-phase nanofluid past a semi-infinite vertical plate with thermal radiation

open access: yesOpen Physics
This research presents a computational investigation of non-linear, steady-state, incompressible laminar boundary-layer flow over a semi-infinite vertical plate using the Darcy–Forchheimer model along with Buongiorno’s nanofluid model. Thermal convection
Anjum Asra   +7 more
doaj   +1 more source

Efficient Gluing of Numerical Continuation and a Multiple Solution Method for Elliptic PDEs

open access: yes, 2014
Numerical continuation calculations for ordinary differential equations (ODEs) are, by now, an established tool for bifurcation analysis in dynamical systems theory as well as across almost all natural and engineering sciences. Although several excellent
Kuehn, Christian
core   +1 more source

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