Abstract—A rigorous semi-analytical solution is presented for electromagnetic scattering from an array of circular cylinders due to an obliquely incident plane wave. The cylinders are illuminated by either TMz or TEz incident plane wave. The solution is based on the application of the boundary conditions on the surface of each cylinder in terms of the local coordinate system of each individual ...

We provide a complete classification of possible configurations of mutually pairwise-touching infinite cylinders in Euclidian three-dimensional space. It turns out that there is a maximum number of such cylinders possible in three dimensions independently of the shape of the cylinder cross-sections. We give the explanation of the uniqueness of the non-trivial configuration of seven equal mutual...

We discuss abelian quotients of monoids of homology cylinders of a surface, each of which consists of a compact 3-manifold as a homology cobordism between two copies of a surface and markings of the boundary. We show that both of the monoid of all homology cylinders and that of irreducible homology cylinders are not finitely generated and moreover they have big abelian quotients. The proof is g...

There is an increased use of fiber reinforced polymer composites (FRPC) in a wide area of engineering fields for various reasons including, ease of transportation and installation, high strength to weight ratio and favorable durability in different conditions. On the other hand, the use of this material as confining shells has been an interesting matter for retrofit, strengthening and construct...

The flow structure about two bluff cylinders placed one after another in hypersonic viscous flow has been studied. The grid equations approximated the Navier-Stokes equations were solved numerically by application of the implicit monotonized scheme of second-order accuracy, the modified Newton's method, and the Christoffel-Schwarz grid-transformation technique. The similarity conditions of deve...

We give a Dehn-Nielsen type theorem for the homology cobordism group of homology cylinders by considering its action on the acyclic closure, which was defined by Levine in [13] and [14], of a free group. Then we construct an additive invariant of those homology cylinders which act on the acyclic closure trivially. We also describe some tools to study the automorphism group of the acyclic closur...

• Small cylinders endure longer lives under fatigue loading. The maximum pore size is larger in taller cylinders, which conditions their lower performance. A wall effect induces an inverse monotonic static effect. Cylinders fewer cycles than cubes of comparable size. law Sparks and Menzies insensitive to cylinder This study deals with the influence fiber concrete mesostructure on compressive Fo...

The steady flow of an electrically conducting, incompressible micropolar fluid in a narrow gap between two concentric rotating vertical cylinders, with porous lining on inside of outer cylinder, under an imposed axial magnetic field is studied. Beavers and Joseph slip condition is taken at the porous lining boundary. The velocity profiles, coefficient of skin friction on the cylinders are calcu...

Optimization algorithms for the design of mold temperature control systems based on deep-hole bores have to assure that the minimal distances between the bores meet given safety margins. If the bores are geometrically modeled as cylinders, this leads to the necessity of determining the minimal Euclidean distances between cylinders and testing them against the corresponding margins. In this pape...

Experimental measurements of acoustic transmission through a solid-solid two-dimensional binary-composite medium constituted of a triangular array of parallel circular steel cylinders in an epoxy matrix are reported. Attention is restricted to propagation of elastic waves perpendicular to the cylinders. Measured transmitted spectra demonstrate the existence of absolute stop bands, i.e., band ga...