The significance of two-way coupling in two-dimensional, dusty turbulence
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| Main Authors: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866914493937745920 |
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| author | Joshi, Harshit Manoharan, Amal Ray, Samriddhi Sankar |
| author_facet | Joshi, Harshit Manoharan, Amal Ray, Samriddhi Sankar |
| contents | The significance of small-scale forcing of particles on the carrier two-dimensional turbulent flow has been shown to influence the spectral scaling properties of the carrier fluid. We investigate possible consequences of such two-way coupling in a turbulent suspension of inertial particles through one- and two-point Eulerian and Lagrangian statistics. In particular, we find signatures of enhanced intermittency in the vorticity distributions. We characterize the changes in the small-scale geometry of the flow via the Okubo-Weiss parameter. Finally, we examine the scaling properties of the second-order vorticity structure functions and find a non-trivial form of scale-invariance at finite mass loading. Motivated by these observations, we propose an effective multiscale forcing framework in which particle feedback is modeled as a spatially localized small-scale forcing. This dual-scale forcing captures the emergence of modified spectral scaling and provides a minimal Eulerian description of particle-laden turbulence that reproduces key statistical signatures of the system. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_10463 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The significance of two-way coupling in two-dimensional, dusty turbulence Joshi, Harshit Manoharan, Amal Ray, Samriddhi Sankar Fluid Dynamics Statistical Mechanics The significance of small-scale forcing of particles on the carrier two-dimensional turbulent flow has been shown to influence the spectral scaling properties of the carrier fluid. We investigate possible consequences of such two-way coupling in a turbulent suspension of inertial particles through one- and two-point Eulerian and Lagrangian statistics. In particular, we find signatures of enhanced intermittency in the vorticity distributions. We characterize the changes in the small-scale geometry of the flow via the Okubo-Weiss parameter. Finally, we examine the scaling properties of the second-order vorticity structure functions and find a non-trivial form of scale-invariance at finite mass loading. Motivated by these observations, we propose an effective multiscale forcing framework in which particle feedback is modeled as a spatially localized small-scale forcing. This dual-scale forcing captures the emergence of modified spectral scaling and provides a minimal Eulerian description of particle-laden turbulence that reproduces key statistical signatures of the system. |
| title | The significance of two-way coupling in two-dimensional, dusty turbulence |
| topic | Fluid Dynamics Statistical Mechanics |
| url | https://arxiv.org/abs/2510.10463 |