One-step alternating direction implicit FDTD algorithm |
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Authors: | Liu Shao-Bin and Liu San-Qiu |
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Affiliation: | School of Sciences, Nanchang University, Nanchang 330047, China |
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Abstract: | In this paper, a novel unconditionally stable alternating direction implicit finite-different time-domain method (ADI-FDTD) called the one-step ADI-FDTD method is presented, where the calculation for one discrete time step is performed using only one procedure, but not the original two sub-updating procedures. Consequently, the proposed one-step ADI-FDTD methods have consumed less computer memory and computation resources and have been faster than the conventional ADI-FDTD methods. We analytically and numerically verified that the new algorithm is unconditionally stable and free from the Courant condition. |
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Keywords: | ADI-FDTD FDTD methods Courant condition unconditionally stable |
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