Alternating Implicit Block FDTD Method For Scalar Wave Equation

In this paper, an alternating implicit block method for solving two dimensional scalar wave equation is presented. The new method consist of two stages for each time step implemented in alternating directions which are very simple in computation. To increase the speed of computation, a group of adjacent points is computed simultaneously. It is shown that the presented method increase the maximum time step size and more accurate than the conventional finite difference time domain (FDTD) method and other existing method of natural ordering.

Authors:

• N. M. Nusi
• M. Othman
• M. Suleiman
• F. Ismail
• N. Alias

Keywords:

• FDTD
• Scalar wave equation
• alternating direction implicit (ADI)
• alternating group explicit (AGE)
• asymmetric approximation.

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