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A hybrid TLM-FDTD method for the modelling of diffusion

โœ Scribed by Chi Chung Wong; Cynthia Lee

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
120 KB
Volume
13
Category
Article
ISSN
0894-3370

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โœฆ Synopsis

A new hybrid TLM-FDTD algorithm for solving di!usion problems is described. The method utilizes the transmission line model to de"ne the time step and the FDTD's leap-frog algorithm to determine the voltages and currents of the network analogue of the di!usion equation. Unlike the standard TLM method, the proposed one does not generate spurious oscillations. The method is explicit and can be used to solve highly non-linear problems without the need to solve non-linear equations. The implementation of a simple adaptive time-stepping algorithm is also described.

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