An Efficient Laguerre-Based FDTD Iterative Algorithm in 3D Cylindrical Coordinate System

An Efficient Strain Based Cylindrical Shell Finite Element

The need for compatibility between degrees of freedom of various elements is a major problem encountered in practice during the modeling of complex structures; the problem is generally solved by an additional rotational degree of freedom [1-3]. This present paper investigates possible improvements to the performances of strain based cylindrical shell finite element [4] by introducing an additio...

An Efficient Iterative Pose Estimation Algorithm

An efficient iterative source routing algorithm

Finding a feasible path subject to multiple constraints in a network is an NP-complete problem and cannot be solved in polynomial time. Thus, many proposed source routing algorithms tackle this problem by transforming it into the shortest path problem, which is P-complete, with an integrated cost function that maps multi-constraints into a single cost. However, this approach may fail to find a ...

A 3D radiative transfer framework: IV. spherical & cylindrical coordinate systems

Aims. We extend our framework for 3D radiative transfer calculations with a non-local operator splitting methods along (full) characteristics to spherical and cylindrical coordinate systems. These coordinate systems are better suited to a number of physical problems than Cartesian coordinates. Methods. The scattering problem for line transfer is solved via means of an operator splitting (OS) te...

PML-FDTD in Cylindrical and Spherical Grids

Perfectly matched layers (PML’s) are derived for cylindrical and spherical finite-difference time-domain (FDTD) grids. The formulation relies on the complex coordinate stretching approach. Two-dimensional (2-D) cylindrical and three-dimensional (3-D) spherical staggered-grid FDTD codes are written based on the time-domain versions of the equations. Numerical simulations validate the formulation...