We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Complete solid-body rotation rate measurements of micro-plastic curved fibers in turbulence
AI summary Read the abstract
Researchers developed a Lagrangian tracking technique to measure the full solid-body rotation of curved microplastic fibers in turbulent flows, exploiting fiber geometry for tumbling and spinning measurements. The method successfully detects fiber rotations approaching the Kolmogorov scale and helps close a key gap in understanding how microplastic shape influences transport behavior.
Abstract In this study we quantify the uncertainty relative to a novel Lagrangian tracking technique to measure the complete solid-body rotation rate of anisotropic micro-plastic fibers. By exploiting their geometry—specifically, their elongation and curvature for tumbling and spinning rate measurements, respectively—we address a gap in the literature regarding the tracking of fibers’ unique orientation along their trajectories. The impact of fiber geometry and imaging parameters on the accuracy of the solid-body rotation rates measurements is investigated. The influence of spatial and temporal resolution on the measurement uncertainty is assessed on synthetic data. Experimental results obtained in a channel flow demonstrate the method’s potential to accurately detect rotations of fibers with lengths approaching the Kolmogorov scale. Graphical abstract
More Papers Like This
Full rotational dynamics of plastic microfibers in turbulence
AI summary Read the abstract
Researchers conducted Lagrangian experiments on elongated, large aspect-ratio curved plastic microfibers near the Kolmogorov length scale in turbulence, tracking their three-dimensional orientation optically to characterize rotational dynamics and settling behavior that govern microplastic transport and dispersion in the ocean.
Lagrangian Time Scale of Passive Rotation for Mesoscale Particles in Turbulence
AI summary Read the abstract
This laboratory study measured the rotation timescales of inertial rod-shaped particles in turbulent water, providing fundamental physical data on how non-spherical objects like microplastic fibers tumble in turbulent ocean environments. These timescales are important for understanding how microplastics move and mix in the sea.
Full Rotational Dynamics of Plastic Microfibers in Turbulence
AI summary Read the abstract
Researchers conducted experiments on the rotational dynamics of elongated plastic microfibers in turbulent conditions. The study provides new data on how these microplastic fibers spin and tumble in turbulence, which is important for understanding the motion, settling, and dispersion patterns of microplastics in ocean environments.
Microfiber behavior in turbulence and in quiescent conditions: insights from 3D high-speed measurements
AI summary Read the abstract
Researchers investigated the settling dynamics of microplastic fibers with high aspect ratios under turbulent and quiescent airflow conditions, using 3D high-speed measurements to show that existing drag models fail to accurately predict settling velocities of these anisotropic curved fibers with diameters of 10-100 micrometers.
Plastic drift : Mapping the course of microplastic transport in turbulent riverine flows.
AI summary Read the abstract
Researchers investigated the transport dynamics of 24 negatively buoyant microplastic particles across a spectrum of sizes, shapes, and densities using a 3D particle tracking system in turbulent open channel flow, generating 720 trajectories. They found that particle shape was the dominant determinant of transport behavior, with fibers tending to remain near the water surface at lower forward velocities while spheres stayed closer to the bed with higher forward velocities.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.