Moving mesh cosmology: characteristics of galaxies and haloes [PDF]
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
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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]
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]
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]
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
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Analysis of SDFEM on Shishkin Triangular Meshes and Hybrid Meshes for Problems with Characteristic Layers [PDF]
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]
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
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Identifying and remeshing contact interfaces in a polyhedral assembly for digital mock-up applications [PDF]
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
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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]
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
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