This paper presents analytical and numerical studies demonstrating that a perfectly conducting metallic plate perforated by a periodic array of subwavelength holes and sandwiched in between two dielectric slabs permits enhanced transmission of electromagnetic plane waves in both the optical and microwave regimes, and this for both transverse magnetically and electrically polarized fields. The e...

The cuticular parts of the aphid plate organ consist of an outer and an inner layer. Both are transparent and in the space between them are many fine branches of the half dozen, or more, sensory neurones which lie below the plate. Each dendrite narrows, a short distance above its cell body, and assumes the structure of a cilium with 9 pairs of peripheral fibrils, a ciliary collar, and basal bod...

Modelling air flow in a curved fine perforated plate region was performed by porous zone substitution. This approach significantly simplifies the observed process, thus various limitations appeared. PIV measurements on an experimental test rig were and compared with results from CFD computations.

A numerical study is performed to investigate unsteady, two-dimensional, incompressible laminar flow over both sides of a slot-perforated flat surface, which is placed in a narrow channel. Emphasis is placed on the effect of the blockage factor, that is, the ratio of plate thickness to channel widthW on the heat-transfer performance and the velocity and thermal fields. It is found from the stud...

This study examined the mass transfer performance in a pulsed perforated-plate extraction column with diameter of 50 mm using two different liquid systems. Mass transfer coefficients have been interpreted in terms of the axial diffusion model. The effects of pulsation intensity and dispersed and continuous phase velocities on the mass transfer performance have been investigated. Three different...

The objectives of this work are (i) to investigate the coupled unsteady heat release mechanisms responsible for thermoacoustic instabilities under di erent ame anchoring con gurations, (ii) to develop reduced-order models to predict the dynamic ame response, and (iii) to develop passive instability mitigation strategies by modifying the dynamics of the ame anchoring zone. The two di erent ancho...

A Hankel transform based model is developed to study water wave interaction with an array of thin submerged horizontal perforated and/or elastic circular plates. The integral equations are formulated in terms unknown functions related the jump velocity potential across each plate. Galerkin method adopted solution these and plate expressed Fourier-Gegenbauer series. present found be valid for mu...