Vortex detection in a simulated supercell thunderstorm

Orf, Leigh; Semeraro, B.D.; Wilhelmson, Robert B.

doi:10.1002/asl.147

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Interactions between large‐scale and small‐scale vortices in geophysical flows have been studied for more than two decades. Most of these efforts focused mainly on impacts of vortex interactions on the structure, intensity, or tracks of a large vortex (Young, 1985; Ritchie and Holland, 1993; Harr and Elsberry, 1996; Montgomery and Kallenbach, 1997; Montgomery and Enagonio, 1998; Enagonio and Montgomery, 2001; Bambrey et al , 2007; Orf et al , 2007; Luo and Liu, 2006, 2007, 2008; Kuo et al , 2008; Fiedler, 2009).…”

Section: Introductionmentioning

confidence: 99%

Highly localized energy transfer induced by the interaction between a large vortex and four small vortices

Luo

Ping

2010

Atmospheric Science Letters

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The scale interaction is simulated using a two-dimensional barotropic model with an initial condition of a large-scale vortex accompanied with four small-scale vortices. We show that both direct and inverse energy cascades occur simultaneously and that the spatial distribution of energy transfer flux across a moderate length scale is characterized by a highly localized configuration, which contains several closed systems with a spatial scale of 50-100 km embedded in two wave trains. This would imply that the temporal change of enstrophy at closed centers is more complex than that at noncenters. The increase of complexity is further correlated with amplification of the enstrophy difference, which is the value of enstrophy at t = 24 h minus that at the initial time.

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Section: Introductionmentioning

confidence: 99%

Highly localized energy transfer induced by the interaction between a large vortex and four small vortices

Luo

Ping

2010

Atmospheric Science Letters

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Tracking the Centre of Asymmetric Vortices Using Wind Velocity Vector Data Fields

Bannigan

Orf

Savory

2022

Boundary-Layer Meteorol

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Two complementary eigen-based geometric properties of a vortex

Kolář,

Šístek

2024

Physics of Fluids

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In our previous paper [V. Kolář and J. Šístek, “Orbitally compact and loose vortex regions,” Phys. Fluids 35, 121708 (2023)], the eigenvalue-based measure of orbital compactness of particle motion inside a vortex for compressible flows has been proposed. Here, a complementary eigenvector-based geometric property of cylindricity (three-dimensional /3D/ aspect) is introduced. This property is closely related to the local flow axisymmetry in the swirl plane (two-dimensional /2D/ aspect) which explains the positive response of the vortex-identification Δ-criterion, and closely related criteria swirling strength and Rortex (Liutex), for almost no vorticity and a large (without any limitation) rate-of-strain magnitude. A relatively high correlation between orbital compactness, cylindricity, and widely used vortex-identification criteria has been found for several flow examples.

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Vortex detection in a simulated supercell thunderstorm

Abstract: Vortex detection software has been developed and applied to the detection of swirling flow in a numerically simulated supercell thunderstorm. The software is used to identify vortex cores, providing insight into the internal structure of the simulated storm.

Cited by 4 publications

References 13 publications

Highly localized energy transfer induced by the interaction between a large vortex and four small vortices

Highly localized energy transfer induced by the interaction between a large vortex and four small vortices

Tracking the Centre of Asymmetric Vortices Using Wind Velocity Vector Data Fields

Two complementary eigen-based geometric properties of a vortex

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