New Operator Marching Method for Analyzing Crossed Arrays of Circular Cylinders

2009 ◽  
Author(s):  
Yumao Wu ◽  
Ya Yan Lu ◽  
Dmitry N. Chigrin
Keyword(s):  
Circular Cylinders ◽  
Crossed Arrays ◽  
Marching Method

Efficient Operator Marching Method for Analyzing Crossed Arrays of Cylinders

2015 ◽  
Vol 18 (5) ◽  
pp. 1461-1481
Author(s):  
Yu Mao Wu ◽  
Ya Yan Lu
Keyword(s):  
Electromagnetic Field ◽  
Efficient Method ◽  
Periodic Structures ◽  
Three Dimensional ◽  
Circular Cylinders ◽  
Geometric Features ◽  
Spatial Direction ◽  
Number Of Layers ◽  
Crossed Arrays ◽  
Marching Method

AbstractPeriodic structures involving crossed arrays of cylinders appear as special three-dimensional photonic crystals and cross-stacked gratings. Such a structure consists of a number of layers where each layer is periodic in one spatial direction and invariant in another direction. They are relatively simple to fabricate and have found valuable applications. For analyzing scattering properties of such structures, general computational electromagnetics methods can certainly be used, but special methods that take advantage of the geometric features are often much more efficient. In this paper, an efficient method based on operators mapping electromagnetic field components between two spatial directions is developed to analyze structures with crossed arrays of circular cylinders. The method is much simpler than an earlier method based on similar ideas, and it does not require evaluating slowly converging lattice sums.

Numerical Investigation of Flow and Heat Transfer around Two Semi-Circular Cylinders with a Splitter Plate

2011 ◽  
Vol 42 (7) ◽  
pp. 595-612
Author(s):  
Masome Heidary ◽  
Mousa Farhadi ◽  
Kurosh Sedighi ◽  
Mostafa Nourollahi
Keyword(s):  
Heat Transfer ◽  
Numerical Investigation ◽  
Splitter Plate ◽  
Circular Cylinders ◽  
Flow And Heat Transfer

Unfoldings of the Circular Cylinders Having Non-Competitive Axles

2019 ◽  
Vol 17 (16) ◽  
pp. 52-55
Author(s):  
Carmen Popa ◽  
Violeta Anghelina ◽  
Octavian Munteanu
Keyword(s):  
Classical Method ◽  
Descriptive Geometry ◽  
Circular Cylinders ◽  
Intersection Curve ◽  
Engineering Sciences

Abstract The descriptive geometry constitues the foundation of the engineering sciences, so necessary to the specialists of this field. The aim of this paper is to establish the intersection curve between two cylinders and their unfoldings, by using the programmes:AutoCAD and Mathematica. We used the classical method and we first establish the intersection curve and then the cylinders unfoldings. To do this, we used the AutoCAD program. The same unfoldings can be obtained by introducing directly the curve equations (which are inferred) in Mathematica program.

Iterative space-marching method for compressible sub-, trans-, and supersonic flows

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 225-233
Author(s):  
N. K. Yamaleev ◽  
J. Ballmann
Keyword(s):  
Supersonic Flows ◽  
Marching Method

On Vortex Streets behind Circular Cylinders in Side-by-Side Arrangement

1990 ◽  
Vol 10 (1Supplement) ◽  
pp. 35-40 ◽  
Author(s):  
Kazuo OHMI ◽  
Kensaku IMAICHI ◽  
Ei-ichi TADA
Keyword(s):  
Circular Cylinders ◽  
Vortex Streets
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