Investigation of f/2 and f/4 waves in granular beds subject to vertical, sinusoidal oscillations
Abstract
When a deep bed of granular material is subject to vertical, sinusoidal oscillations, a number of phenomena appear including two regimes of standing surface waves that form at one-half and one-quarter of the oscillation forcing frequency. These waves are referred to as f /2 and f /4 waves where f is the oscillation frequency. This paper presents the results from experiments and computer simulations designed to study the wavelength and wave amplitude dependence of the surface waves on the vibration parameters, collision coefficient of restitution, and the particle bed depth.
Fields of Study & Subjects
Granular flow and fluidized beds
Nonlinear Dynamics and Pattern Formation
Aeolian processes and effects
Publication details
- Journal / source
- Powder and Grains 97
- Publisher
- CRC Press
- Pages
- 433–436
- Publication date
- 19 February 2026
- Language
- EN
- Document type
- Book chapter