Papers › SPIRAL: An Efficient Algorithm for the Integration of the Equation of Rotational Motion
SPIRAL: An Efficient Algorithm for the Integration of the Equation of Rotational Motion
Carlos Andrés del Valle, Vasileios Angelidakis, Sudeshna Roy, José Daniel Muñoz, Thorsten Pöschel
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We introduce Spiral, a third-order integration algorithm for the rotational motion of extended bodies. It requires only one force calculation per time step, does not require quaternion normalization at each time step, and can be formulated for both leapfrog and synchronous integration schemes, making it compatible with many particle simulation codes. The stability and precision of Spiral exceed those of state-of-the-art algorithms currently used in popular DEM codes such as Yade, MercuryDPM, LIGGGHTS, PFC, and more, at only slightly higher computational cost. Also, beyond DEM, we see potential applications in all numerical simulations that involve the 3D rotation of extended bodies.
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