Results 21 to 30 of about 730,182 (230)

A Cartesian-grid collocation method based on radial-basis-function networks for solving PDEs in irregular domains [PDF]

open access: yes, 2007
[Abstract]: This paper reports a new Cartesian-grid collocation method based on radial-basis-function networks (RBFNs) for numerically solving elliptic partial differential equations (PDEs) in irregular domains.
Mai-Duy, Nam, Tran-Cong, Thanh
core   +1 more source

A Performance-Enhanced Cartesian Grid Generation Method: More Robust, Efficient, and Memory-Efficient

open access: yesApplied Sciences
To address the limitations of poor robustness, low efficiency, and memory waste in traditional Cartesian grid generation, this paper proposes targeted improvements focusing on three key aspects: the surface mesh data structure, the Cartesian grid data ...
Shuang Meng   +5 more
doaj   +1 more source

Representing hydrodynamically important blocking features in coastal or riverine lidar topography [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2015
New automated methods are developed for identifying narrow landscape features that cause hydrodynamic blocking and might have critical impacts for management models of river flooding, coastal inundation, climate change, or extreme event analysis.
B. R. Hodges
doaj   +1 more source

A conservative immersed boundary method for the multi-physics urban large-eddy simulation model uDALES v2.0 [PDF]

open access: yesGeoscientific Model Development
uDALES is an open-source multi-physics microscale urban modelling tool, capable of performing large-eddy simulation (LES) of urban airflow, heat transfer, and pollutant dispersion.
S. O. Owens   +4 more
doaj   +1 more source

A Novel Solution- and Moving Boundary-Adaptive Cartesian Grid Strategy for Efficient and High-Fidelity Simulations of Complex Flow with Moving Boundaries

open access: yesAerospace
In this paper, a novel solution- and moving boundary-adaptive Cartesian grid strategy is proposed and used to develop a computational fluid dynamics (CFD) solver.
Zhiwei Guo   +3 more
doaj   +1 more source

Adaptive Multi-Grid Methods for Parallel CFD Applications [PDF]

open access: yes, 2014
Computational fluid dynamic (CFD) computations are memory and time intensive and need to be executed in parallel for larger computational domains. In order to produce physical accurate solutions, adaptive grid setups have to be chosen as the memory and ...
Mundani, Ralf-Peter   +2 more
core   +1 more source

Hybrid Additive Manufacturing of Highly Stretchable Bottlebrush Polymer Nanocomposites by Decoupled Extrusion and Photopatterning

open access: yesAdvanced Materials Technologies, EarlyView.
A Hybrid Direct Ink Writing–Digital Light Processing (HDD) strategy decouples material extrusion from shape definition, enabling high‐fidelity additive manufacturing of highly viscous, yield‐stress polymer nanocomposites. Excess ink acts as a removable, self‐supporting scaffold, allowing fabrication of unsupported and embedded complex architectures ...
Shahryar Ramezani Bajgiran   +3 more
wiley   +1 more source

A Cartesian-grid integrated-RBF Galerkin technique [PDF]

open access: yes, 2010
This paper describes a high-order Galerkin technique, which is based on indirect/integrated radial-basis-function networks (IRBFNs) and Cartesian grids, for the discretisation of elliptic problems in two dimensions.
Mai-Duy, N., Ho-Minh, D., Tran-Cong, T.
core   +1 more source

Link-wise Artificial Compressibility Method [PDF]

open access: yes, 2012
The Artificial Compressibility Method (ACM) for the incompressible Navier-Stokes equations is (link-wise) reformulated (referred to as LW-ACM) by a finite set of discrete directions (links) on a regular Cartesian mesh, in analogy with the Lattice ...
Ohwada, T.   +4 more
core   +1 more source

Modeling of focal-directorial surfaces for application in architecture [PDF]

open access: yesFME Transactions, 2017
The theme of this paper is the modeling of focal-directorial surfaces, starting with their definition, as a locus of points, whose sum of the distances to the focus and/or directrix is constant and predefined.
Petruševski Ljiljana S.   +3 more
doaj  

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