Diffracted Field Calculation Using Multiple Precision Arithmetic and Parallel Computing

Abstract

KOSEN students learn various latest skills and technologies. In computer science, high performance computing such as parallel computing and high precision computing is a latest topic. The electromagnetic diffraction by a circular disk of perfect conductor has been analyzed rigorously. However, it has been difficult to obtain meaningful numerical data for larger disks using double precision or quadruple precision arithmetic. By using multiple precision arithmetic, numerical data for the current distributions and the diffracted fields can be obtained for larger disks. In addition, equations for calculating the diffracted fields are expanded and rearranged to control accuracies of numerical data. The multiple precision arithmetic wastes computing time. For speeding up, parallel computing is used. Through these high performance computing, our KOSEN students learn numerical calculation technique. This article describes diffracted field calculations using multiple precision arithmetic and parallel computing.