Results 11 to 20 of about 63,518 (304)

Moving mesh cosmology: characteristics of galaxies and haloes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2011
24 pages, 14 figures. MNRAS accepted (in press). Expanded introduction and discussion of galactic angular momentum; added references; one additional figure. Movies and high-resolution images can be found at http://www.cfa.harvard.edu/itc/research/movingmeshcosmology/
Kereš, Dušan   +4 more
openaire   +4 more sources

Meshing Characteristics of Spur Gears Considering Three-Dimensional Fractal Rough Surface under Elastohydrodynamic Lubrication

open access: yesMachines, 2022
Taking the effect of actual surface topography under elastohydrodynamic lubrication (EHL) conditions on the contact state of gear pairs into consideration, a combination model with the analytical sliced method and two-dimensional (2D) EHL model is ...
Zhifang Zhao   +5 more
doaj   +1 more source

Adaptive mesh refinement for characteristic grids [PDF]

open access: yesGeneral Relativity and Gravitation, 2010
I consider techniques for Berger-Oliger adaptive mesh refinement (AMR) when numerically solving partial differential equations with wave-like solutions, using characteristic (double-null) grids. Such AMR algorithms are naturally recursive, and the best-known past Berger-Oliger characteristic AMR algorithm, that of Pretorius & Lehner (J. Comp. Phys.
openaire   +3 more sources

The low-noise optimisation method for gearbox in consideration of operating conditions [PDF]

open access: yes, 2014
This paper presents a comprehensive procedure to calculate the steady dynamic response and the noise radiation generated from a stepping-down gearbox.
Kang, J, Sun, W, Tao, Q, Zhou, J
core   +1 more source

Methyl esters selectivity of transesterification reaction with homogenous alkaline catalyst to produce biodiesel in batch, plug flow, and continuous stirred tank reactors [PDF]

open access: yes, 2014
Selectivity concept is essential in establishing the best operating conditions for attaining maximum production of the desired product. For complex reaction such as biodiesel fuel synthesis, kinetic studies of transesterification reaction have revealed ...
Kamarudin, S. K.   +3 more
core   +3 more sources

Analysis of SDFEM on Shishkin Triangular Meshes and Hybrid Meshes for Problems with Characteristic Layers [PDF]

open access: yesJournal of Scientific Computing, 2016
In this paper, we analyze the streamline diffusion finite element method (SDFEM) for a model singularly perturbed convection-diffusion equation on a Shishkin triangular mesh and hybrid meshes. Supercloseness property of $u^I-u^N$ is obtained, where $u^I$ is the interpolant of the solution $u$ and $u^N$ is the SDFEM's solution.
Zhang, Jin, Liu, Xiaowei
openaire   +2 more sources

Rapid Manufactured Textiles [PDF]

open access: yes, 2006
Rapid Manufacturing (RM) is increasingly becoming a viable manufacturing process due to dramatic advantages that are achievable in the area of design complexity.
Bingham, G. A.   +3 more
core   +1 more source

Identifying and remeshing contact interfaces in a polyhedral assembly for digital mock-up applications [PDF]

open access: yes, 2006
Polyhedral models are widely used for applications such as manufacturing, digital simulation or visualization. They are discrete models; easy to store, to manipulate, allowing levels of resolution for visualization.
CHOUADRIA, RYM, VERON, Philippe
core   +4 more sources

Analysis of Meshing Contact Characteristics of the Gear Transmission System Based on Data Mining Technology

open access: yesJixie chuandong, 2023
Aiming at the difficulty of analyzing the meshing contact characteristics of gear transmission system under the big data formed by multiple working conditions and uncertain parameters, a meshing contact characteristics analysis method of gear ...
Li Shengjia   +4 more
doaj  

Diagnosis of Combination Faults in a Planetary Gearbox using a Modulation Signal Bispectrum based Sideband Estimator [PDF]

open access: yes, 2015
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal ...
Abdallaa, Gaballa M.   +5 more
core   +1 more source

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