Strain-mediated multiferroic composite structures are gaining scientific and technological attractions because of the promise low power consumption greater flexibility in material geometry choices. In here, direct magnetoelectric coupling coefficient (DME) cylinders, consisted two mechanically bonded concentric was analytically modeled under influence a radially emanating magnetic field. The an...

Squeeze film effects between two concentric cylinders are common and important in many mechanical systems. The models for cylindrical squeeze force vibrating system with have not been well understood. In this paper, we model a starting from the simplification of full Navier–Stokes equations then get an expression force. We study influence harmonic exciting on spring damped vibrator effect by es...

The dual reciprocity method (DRM) is a highly efficient numerical method of transforming domain integrals arising from the non-homogeneous term of the Poisson equation into equivalent boundary integrals. In this paper, the velocity and temperature fields of laminar forced heat convection in a concentric annular tube, with constant heat flux boundary conditions, have been studied using numerical...

Recently, Halliday et al. presented an idea by inserting the “source” terms into the two-dimensional (2D) lattice Boltzmann equation (LBE) so that the emergent dynamics of the lattice fluid can be transformed into the cylindrical polar system. This paper further extends the idea of Halliday et al. to include the effect of azimuthal rotation. The terms related to the azimuthal effect are conside...

In this paper a numerical simulation of the melting process Carreau non-Newtonian phase change material inside two porous vertical concentric cylinders included constant temperatures inner and outer walls, represented by Th Tc, respectively. Half void between pipes is filled with copper media paraffin wax as material. The governing equations are converted into dimensionless form solved using fi...