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Updated: Jun 26, 2026

Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
Published on: June 24, 2016
Filament-induced surface spiral turbulence in three-dimensional excitable media
Jörn Davidsen1, Meng Zhan, Raymond Kapral
1Complexity Science Group, Department of Physics & Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada. davidsen@phas.ucalgary.ca
Abstract:
Filament-induced surface defect-mediated turbulence in bounded three-dimensional (3D) excitable media is investigated in the regime of negative line tension. In this regime turbulence arises due to unstable filaments associated with scroll waves and is purely a 3D phenomenon. It is shown that the statistical properties of the turbulent defect dynamics can be used to distinguish surface defect-mediated turbulence from its 2D analog. Mechanisms for the creation and annihilation of surface defects are discussed and Markov rate equations are employed to model the results.
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