نتایج جستجو برای: horizontal cylinders

تعداد نتایج: 70074  

2014

In this study, thermo elastic stress analysis is performed on a cylinder made of laminated isotropic materials under thermomechanical loads. Laminated cylinders have many applications such as aerospace, automotive and nuclear plant in the industry. These cylinders generally performed under thermomechanical loads. Stress and displacement distribution of the laminated cylinders are determined usi...

The deterioration of bond strength between reinforcing steel and concrete as a result of impressed cathodic current with respect to the exposure time was investigated. A current in the magnitude of 3ma/ft2 (based on reinforcing rebar area) was used for a period of five years. Chemical analyses for sodium (Na+), potassium (K+) and chloride (Cl-) ions in concrete cylinders were performed as a fun...

2017
Yan Li Chuan Li Yajie Wu Cong Liu Han Yuan Ning Mei

In this paper, the reconstruction mechanism of the boundary layer in the channel is studied using the lattice Boltzmann method (LBM). By comparing the distribution of velocity in the channel, the conclusion that LBM has feasibility and superiority is obtained. Based on this, a physical model of square cylinders is set up to simulate the velocity distribution and the effect on the thickness of b...

2011
Muhammad Shafiqul Alam Liang Cheng

ABSTRACT This study is concerned with the simulation of viscous flow past three equal diameter circular cylinders in equilateral-triangular arrangement. The hydrodynamic characteristics of cylinders are modelled by a 2Dlattice Boltzmann kernel which is constructed employing Compute Unified Device Architecture (CUDA) interface developed by nVIDIA. Computations using the developed kernel are perf...

2013
Manal H. Saleh

A numerical study has been carried out to investigate the heat transfer by natural convection of nanofluid taking Cu as nanoparticles and the water as based fluid in a three dimensional annulus enclosure filled with porous media (silica sand) between two horizontal concentric cylinders with 12 annular fins of 2.4mm thickness attached to the inner cylinder under steady state conditions. The gove...

2013
Anirban Bose Rana Saha Kamalesh Majumdar Dipankar Sanyal

A Stewart platform has been designed by selecting commercially available components. Each of its six legs has spherical and universal joints respectively at the bottom and top ends of a piston-cylinder arrangement with the piston rod protruding out of the cylinder top. By a universal joint at the cap end at the bottom of each cylinder, the legs are mounted on a fixed horizontal frame. By electr...

Journal: :Notre Dame Journal of Formal Logic 1983
Bhavani M. Thuraisingham

(i) A set is a cylinder if and only if it is an ^-cylinder for each n > 1. (ii) The class of all (n+l)-cylinders is a proper subset of the class of all π-cylinders for each n > 1. (iii) For each n > 1, the class of all ^-cylinders contains a simple set and hence a nonsplinter. (iv) For each n > 1, the class of all ^-cylinders contains a nonsimple nonsplinter. (v) A set P is an ^-cylinder (n > 1...

2004
Kiyotoshi Yasumoto Hongting Jia Naoya Koike

An accurate semi-analytical approach for modeling electromagnetic scattering and guidance by photonic crystals formed by layered parallel-arrays or crossed-arrays of circular cylinders is presented , using the lattice sums technique, the T matrix algorithm, and the generalized reflection and transmission matrices for a layered system. The method is quite general and applies to various configura...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2004
Y Pennec B Djafari-Rouhani J O Vasseur A Khelif P A Deymier

Acoustic band gap (ABG) materials constituted of steel hollow cylinders immersed in water can exhibit a tunable narrow pass band (NPB) located inside their gap. We theoretically investigate, using the finite difference time domain (FDTD) method, the properties of waveguides composed of a row of hollow cylinders in a two-dimensional (2D) phononic crystal made of filled steel cylinders. These wav...

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