Hybrid grids consisting of prisms and tetrahedra are employed for the solution of the 3-D Navier-Stokes equations of incompressible ow. A pressure correction scheme is employed with a nite vol-ume//nite element spatial discretization. The traditional staggered grid formulation has been substituted with a collocated mesh approach which uses fourth order… (More)
Conformal antennas have got a wide application in the modern communication systems, Planar monopole antenna is one typical conformal antenna. In this paper, a broadband omnidirectional planar monopole antenna is presented, and the influence of structure parameters on its electric characteristics is investigated.
In the finite element method (FEM), the matrix equation can be solved either using a direct elimination method or an iterative method. The conjugate gradient (CG) is a common-used iterative method. But there are several limits in its application. In order to overcome the disadvantages, a preconditioned conjugate gradient (PCG) method based on the incomplete… (More)