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Journal Article

Inertia Induces Strong Orientation Fluctuations of Nonspherical Atmospheric Particles

MPS-Authors
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Bhowmick,  Taraprasad
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Seesing,  Johannes
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Güttler,  Johannes Milan
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Wang,  Yong
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Pumir,  Alain       
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Bagheri,  Gholamhossein       
Laboratory for Fluid Physics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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PhysRevLett.132.034101.pdf
(Publisher version), 916KB

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Citation

Bhowmick, T., Seesing, J., Gustavsson, K., Güttler, J. M., Wang, Y., Pumir, A., et al. (2024). Inertia Induces Strong Orientation Fluctuations of Nonspherical Atmospheric Particles. Physical Review Letters, 132(3): 034101. doi:10.1103/PhysRevLett.132.034101.


Cite as: https://hdl.handle.net/21.11116/0000-000E-5B13-7
Abstract
The orientation of nonspherical 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.