Abstract: In this study, the problem of laminar, isothermal, incompressible and viscous flow in a rectangular domain bounded by two moving porous walls, which enable the fluid to enter or exit during successive expansions or contractions, is solved using a series of based analytical techniques named Homotopy Perturbation Method (HPM), Differential Transformation Method (DTM) and Optimal Homotop...

In this work, we analyse passivated emitter and rear cells (PERC), based on wafers made from seed manipulation for artificially controlled defects technique (SMART) monocrystalline silicon, magnetically grown conventional Czochralski (mCz Cz) high-performance multicrystalline (hpm) silicon. All were processed identically except the hpm wafers, which received an acidic texture instead of random ...

In this paper, the nonlinear free vibrations of thin symmetric and non-symmetric cross-ply composite plates subjected to biaxial initial stresses are investigated. Because of their excellent properties such as specific strength and specific stiffness, composite plates have wide applications in aerospace and mechanical structures. Based on Von-Karman's strain-displacement relations and using Gal...

in this paper, we will compare a homotopy perturbation algorithm and taylor series expansin method for a system of second kind fredholm integral equations. an application of he’s homotopy perturbation method is applied to solve the system of fredholm integral equations. taylor series expansin method reduce the system of integral equations to a linear system of ordinary differential equation.

In this article, we apply homotopy perturbation method(HPM) for solving non-linear equations which play an important role in different branches of sciencs. To illustrate the capability , reliability and simplicity of this method , some examples are given.

Recently a great deal of interest has been focused on the application of HPM for the solution of many different problems. The technique has been applied with great success to obtain the solution of a large variety of nonlinear problems in both ordinary and partial differential equations and integro-differential equations[1-10]. In this work we apply HPM to approximate eigenvalues and eigenfunct...

A virtual cathode oscillator or vircator is a vacuum tube for producing high-power microwaves (HPM). The efficiency of the has been difficult task decades. main reasons low are intense relativistic electron beam (IREB) loss and few no interactions between IREB HPM. In this case, forming multiple cathodes may be beneficial in overcoming these constraints. By reusing axially propagating leaked el...

The solution of the complex neutron diffusion equations system in a spherical nuclear reactor is presented using homotopy perturbation method (HPM); HPM remarkable approximation that successfully solves different systems equations, and this work, solved for first time method. considered consists two consistent subsystems, where studies multi-group subsystem core, other reflector; each can deal ...