Results 21 to 30 of about 215,493 (276)
A comparative study of immersed-boundary interpolation methods for a flow around a stationary cylinder at low Reynolds number [PDF]
, 2013 The accuracy and computational efficiency of various interpolation methods for the implementation of non grid-confirming boundaries is assessed. The aim of the research is to select an interpolation method that is both efficient and sufficiently accurate
Wissink, J +5 more
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Guiding center simulations on curvilinear grids*
ESAIM: Proceedings and Surveys, 2016 Semi-Lagrangian guiding center simulations are performed on sinusoidal perturbations of cartesian grids, and on deformed polar grid with different boundary conditions.
Hamiaz Adnane +3 more
doaj +1 more source
Planar potential flow on Cartesian grids
Journal of Fluid Mechanics, 2022 Potential flow has many applications, including the modelling of unsteady flows in aerodynamics. For these models to work efficiently, it is best to avoid Biot–Savart interactions. This work presents a grid-based treatment of potential flows in two dimensions and its use in a vortex model for simulating unsteady aerodynamic flows.
Diederik Beckers, Jeff D. Eldredge
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A numerical study of 2D integrated RBFNs incorporating Cartesian grids for solving 2D elliptic differential problems [PDF]
, 2010 This article reports a numerical discretization scheme, based on two-dimensional integrated radial-basis-function networks (2D-IRBFNs) and rectangular grids, for solving second-order elliptic partial differential equations defined on 2D nonrectangular ...
Mai-Duy, Nam, Tran-Cong, Thanh
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Full potential flow computations using cartesian grids [PDF]
, 1987 The main thrust of this paper has been the13; exploitation of Cartesian grids in the numerical13; solution of transonic full potential equation.13; Notwithstanding the present-day popularity for13; the use of body-wrapped coordinare systems in the13 ...
R. RANGARAJAN +7 more
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Computation of Ice Shedding Trajectories Using Cartesian Grids, Penalization, and Level Sets
Modelling and Simulation in Engineering, 2011 We propose to model ice shedding trajectories by an innovative paradigm that is based on cartesian grids, penalization and level sets. The use of cartesian grids bypasses the meshing issue, and penalization is an efficient alternative to explicitly ...
Héloïse Beaugendre +3 more
doaj +1 more source
Embedding Features in a Cartesian Grid
, 2009 Grid-based mesh generation methods have been available for many years and can provide a reliable method for meshing arbitrary geometries with hexahedral elements. The principal use for these methods has mostly been limited to biological-type models where topology that may incorporate sharp edges and curve definitions are not critical.
Steven J. Owen, Jason F. Shepherd
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On NUFFT-based gridding for non-Cartesian MRI [PDF]
Journal of Magnetic Resonance, 2007 For MRI with non-Cartesian sampling, the conventional approach to reconstructing images is to use the gridding method with a Kaiser-Bessel (KB) interpolation kernel. Recently, Sha et al. [L. Sha, H. Guo, A.W. Song, An improved gridding method for spiral MRI using nonuniform fast Fourier transform, J. Magn. Reson.
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Applied SciencesTo 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
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LES of Internal Combustion Engine Flows Using Cartesian Overset Grids
Oil & Gas Science and Technology, 2017 Accurate computations of turbulent flows using the Large-Eddy Simulation (LES) technique with an appropriate SubFilter Scale (SFS) model require low artificial dissipation such that the physical energy cascade process is not perturbed by numerical ...
Falkenstein Tobias +7 more
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