Results 171 to 180 of about 190,891 (327)

Error Analysis of a Pressure‐Correction Method With Explicit Time‐Stepping

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
We study explicit variants of this well‐established pressure‐correction scheme for solving the Navier–Stokes equations. Step 3 is replaced by an explicit time‐integration method. We give the complete error analysis for this scheme that allows for highly efficient implementations.
Utku Kaya, Thomas Richter
wiley   +1 more source

Accelerating Vortex Particle Methods by Downsampling the Vorticity Field Representation

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
This paper presents two downsampling algorithms for vortex particle methods (VPMs) that reduce the number of computational elements representing the vorticity field. The two methods demonstrate significant reductions in particle count and computation time in benchmark cases at a cost of diffusive errors.
Jakub Siemaszko   +2 more
wiley   +1 more source

Logarithmically improved blow-up criteria for the 3D nonhomogeneous incompressible Navier-Stokes equations with vacuum

open access: yesElectronic Journal of Differential Equations, 2016
This article is devoted to the study of the nonhomogeneous incompressible Navier-Stokes equations in space dimension three. By making use of the "weakly nonlinear" energy estimate approach introduced by Lei and Zhou in [16], we establish two ...
Qianqian Hou, Xiaojing Xu, Zhuan Ye
doaj  

Clogging Analysis in Drip Irrigation Systems: CFD and DEM Approaches

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT Clogging represents a critical challenge that undermines the efficiency and sustainability of drip irrigation systems by inducing uneven water distribution and increasing maintenance requirements. In this study, the phenomenon of clogging in drip emitters was investigated via computational fluid dynamics (CFD) in conjunction with the discrete ...
Nuri Orhan, Berk Kalem
wiley   +1 more source

Experimental Study on Polymer–Polymer Interfacial Thermal Resistance

open access: yesMacromolecular Theory and Simulations, Volume 34, Issue 2, March 2025.
Interfacial thermal resistance (ITR) in polymer–polymer interfaces is experimentally measured in this paper by the multi‐layered bulk sample approach. Based on numerical simulation and experimental verification, new techniques of layer‐overlapping samples are developed.
Yinfeng Xia   +2 more
wiley   +1 more source

Numerical data generation for building machine learning models for permeability estimation of fibrous structures

open access: yesPolymer Composites, EarlyView.
Data‐driven emulators can estimate the permeability in less than 10% of the time compared to numerical permeability determination. Abstract The challenge of developing effective multiscale flow simulation methods is to take into account all relevant physical effects from fiber to component level, but remain manageable in terms of computational effort ...
Tim Schmidt   +5 more
wiley   +1 more source

Impregnation and saturation analysis of microwave‐preheated reactive resin in liquid composite molding

open access: yesPolymer Composites, EarlyView.
Analysis of the improvements of impregnating and saturating resin flows in microwave‐preheated liquid composite molding. Abstract In liquid composite molding processes, resin preheating is a strategy to reduce the viscosity, which consequently improves resin flow and reduces impregnation time. However, the provision of heat to thermoset systems must be
Vitantonio Esperto   +2 more
wiley   +1 more source

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