Results 121 to 130 of about 283,896 (317)

Impact of Uncertain Parameters on Navier–Stokes Equations With Heat Transfer via Polynomial Chaos Expansion

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime   +3 more
wiley   +1 more source

Semilinear elliptic problems with mixed Dirichlet–Neumann boundary conditions

open access: yesJournal of Functional Analysis, 2003
The authors study the problem \[ \begin{aligned} -\Delta u &= \lambda u^q + u^r \quad\text{in } \Omega, \cr u &> 0 \quad\text{in } \Omega, \cr B(u) &= 0 \quad\text{on } \partial\Omega, \end{aligned} \eqno(*) \] where \(\Omega\subset{\mathbb R}^N\), \(N\geq 3\), is a smooth bounded domain ...
Colorado, E., Peral, I.
openaire   +2 more sources

Efficient Numerical Framework for Geothermal Energy Production Optimization in Fracture‐Controlled Reservoirs

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
We introduce an efficient open‐source numerical framework for the automated search for the placements of injection and production wells in hot fracture‐controlled reservoirs that sustainably optimize geothermal energy production. We model the reservoirs as discrete fracture networks in 3D. The fluid flow and heat transport in the reservoirs are modeled
Ondřej Pártl, Ernesto Meneses Rioseco
wiley   +1 more source

Coupled Clustering in Hierarchical Matrices for the Oseen Problem

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley   +1 more source

Facial expression recognition for emotion perception: A comprehensive science mapping

open access: yesIbrain, EarlyView.
Facial expression recognition (FER) has emerged as a pivotal interdisciplinary research domain, bridging computer science, psychology, neuroscience, and medicine. By mapping the FER scientific knowledge graph, the study aimed to explore the technological evolution and forecast future application trends in this field.
Hou‐Ming Kan   +10 more
wiley   +1 more source

Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case

open access: yesElectronic Journal of Differential Equations, 2004
We derive a monotonicity formula at boundary points for a class of nonlinear elliptic partial differential equations, including the obstacle problem case, quenching, a free boundary problem with Bernoulli-type free boundary condition as well as the blow ...
Georg S. Weiss
doaj  

Sense‐Making and Gratitude in the Aftermath of Hurricane Helene

open access: yesJournal of Clinical Psychology, EarlyView.
ABSTRACT Objective Early on the morning of September 27, 2024, Hurricane Helene roared through the Southeastern United States, leaving a trail of devastation to be followed by a recovery period that will last months, and, in some places, even years. The purpose of the current study was to analyze the extent to which online posts in response to a well ...
Noah F. Britt   +2 more
wiley   +1 more source

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