Effect of energy input on long-term velocity correlations of a rotating sphere in a vibrated sphere-beads system

Authors

  • Mergebelle D. Dengal ⋅ PH Department of Physics, Mindanao State University – Main Campus, Marawi City
  • Adones B. Dengal ⋅ PH Department of Physics, Mindanao State University – Main Campus, Marawi City
  • Joel T. Maquiling ⋅ PH Department of Physics, Ateneo de Manila University

Abstract

We explore the use of time-resolved Hurst exponent analysis to characterize the degree and nature of correlations in empirical time series corresponding to translational and rotational velocity magnitudes of a rotating sphere on the free surface of vibrated granular matter. For the range of vibration parameters considered, the sphere's translational and rotational motions both display self-similarity or positive, long-term correlations, which indicate persistent dynamical behavior different from that of random 'Brownian' motion. While the degree of long-term correlations in the sphere's rotational motion decreases with increasing vibrational energy input, the nature of correlations remain in the persistent, non-Brownian regime.

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Issue

Article ID

SPP-2021-PB-04

Section

Poster Session B (Complex Systems, Photonics, and Interdisciplinary Topics)

Published

2021-10-03

How to Cite

[1]
MD Dengal, AB Dengal, and JT Maquiling, Effect of energy input on long-term velocity correlations of a rotating sphere in a vibrated sphere-beads system, Proceedings of the Samahang Pisika ng Pilipinas 39, SPP-2021-PB-04 (2021). URL: https://proceedings.spp-online.org/article/view/SPP-2021-PB-04.