Abstract

An original method is presented to determine the complex Lamb wave spectrum by using a numerical spectral method applied to the elasticity equations. This method presents the advantage to directly determine complex wave numbers for a given frequency via a classical matricial eigenvalue problem, and allows the wave numbers to be determined at relatively high frequencies (i.e., corresponding to m...

– At least up to Rayleigh numbers of the order 10, a feature of turbulent convection in confined containers is a self-organized and coherent large-scale motion (“mean wind”). For aspect ratio unity, the mean wind is comparable in scale to the container size. Its magnitude is measured here using short-time temperature correlations in a cylindrical container of aspect ratio unity; the working flu...

We study the connection between extreme events of thermal and kinetic energy dissipation rates in bulk three-dimensional Rayleigh-Bénard convection wall shear stress patterns at top bottom plates that enclose layer. Zero points this two-dimensional vector field stand for detachments strong plumes. If their position opposite a given time is close then they can be considered as precursors high-am...

We consider systems of reactive Boussinesq equations in two dimensional strips that are not aligned with gravity’s direction. We prove that for any width of such strips and for arbitrary Rayleigh and Prandtl numbers, the systems admit smooth, non-planar traveling wave solutions with the fluid’s velocity satisfying no-slip boundary conditions.

In this paper we show the performance of MIMOOFDM [1] (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) system in Rayleigh Fading Channel [2].MIMO-OFDM system is very popular technique for mobile communication now a day’s .We compares Ergodic and Outage Capacity [3] with taking various numbers of Transmitting and Receiving antennas and various performance measures such...

Natural convection of Bingham plastics in a cavity with differentially heated walls and an internal heat source is investigated numerically. The governing dimensional non-dimensional macroscopic equations are presented, the constitutive equation written based on exact model. implemented lattice Boltzmann method explained showed how to derive presented equations. code validated verified against ...