A performance assessment of Liao's absorbing boundary conditions for FD–TD method

✍ Scribed by T. S. Yeo; P. S. Kooi; M. S. Leong; R. H. Feng

• Book ID: 102657040
• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 791 KB
• Volume: 16
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19971020)16:3<186::aid-mop15>3.0.co;2-3

✦ Synopsis

The absorbing performance and computational efficiency of an accurate and efficient absorbing boundary condition due to Liao are discussed and compared with Mur's ABC. Numerical simulations show that Liao's ABC in general outperforms Mur's ABC. Furthermore, Liao's ABC pro¨ides greater flexibility and accuracy than Mur's ABC for arbitrary incidence. Based on the results of these computer simulations, the relati¨e performance, including their efficiencies, CPU, and memory requirements, are tabulated for easy reference. A selection guide for the weighting factor ␣ in Liao's ABC for ¨arious incident angles is also gi¨en herein. Proper choice of ␣ enables one to use an ABC of lower order, thus resulting in a sa¨ings in computational requirements. ᮊ 1997