Inertia induces strong orientation fluctuations of non-spherical atmospheric particles
arXiv:2303.04299 · doi:10.1103/PhysRevLett.132.034101
Abstract
The orientation of non-spherical particles in the atmosphere, such as volcanic ash and ice crystals, influences their residence times, and the radiative properties of the atmosphere. Here, we demonstrate experimentally that the orientation of heavy submillimeter spheroids settling in still air exhibits decaying oscillations, whereas it relaxes monotonically in liquids. Theoretical analysis shows that these oscillations are due to particle inertia, caused by the large particle-fluid mass-density ratio. This effect must be accounted for to model solid particles in the atmosphere.
Revised version, 9 pages, 4 figures, 1 table
References in corpus (5)
- Statistical models for the dynamics of heavy particles in turbulence
- Effect of particle inertia on the alignment of small ice crystals in turbulent clouds
- Inertial torque on a small spheroid in a stationary uniform flow
- Experimental validation of fluid inertia models for a cylinder settling in a quiescent flow
- Supersaturation in the Wake of a Precipitating Hydrometeor and its Impact on Aerosol Activation
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