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Updated: Jul 8, 2025

Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
Three-Dimensional Energy Transfer in Space Plasma Turbulence from Multipoint Measurement
Francesco Pecora1, Yan Yang1, William H Matthaeus1
1Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA.
Abstract:
A novel multispacecraft technique applied to Magnetospheric Multiscale Mission data in the Earth's magnetosheath enables evaluation of the energy cascade rate from the full Yaglom's equation. The method differs from existing approaches in that it (i) is inherently three-dimensional, (ii) provides a statistically significant number of estimates from a single data stream, and (iii) allows visualization of energy flux in turbulent plasmas. This new "lag polyhedral derivative ensemble" technique exploits ensembles of tetrahedra in lag space and established curlometerlike algorithms.
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