INFLUENCE OF EXCITABILITY ON SCROLL WAVES IN A SIMULATED EXCITABLE MEDIA

Ekachai Chongsereecharoen, Wichai Kongsri, Nakorn Kumchaiseemak, Porramain Porjai

Abstract


In three-dimensional reaction-diffusion systems, a scroll wave rotates around one-dimensional phase singularity center, called the filament. Normally, scroll waves can collapse and disappear when they hit the boundary of the medium. In this work we consider the wave period, wavelength and wave velocity of scroll waves with different excitabilities of the medium in the Oregonator model. When the excitability growths, both wave period and wavelength decline. However, the wave velocity increases with the excitability. In addition, we reconstruct the scroll wave in three-dimension to observe their structures.

Keywords


Scroll wave, Excitability, the Oregonator model

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SCIENCE  AND  TECHNOLOGY  RMUTT  JOURNAL
คณะวิทยาศาสตร์และเทคโนโลยี
Faculty of Science and Technology
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