Effect of jet flow control in front of the leading bogie on the aerodynamic drag and underbody slipstream of high-speed trains by Sha Huang, Zhi-Wei Li, Wen-Jing Peng, Jin-Rong Lin, Zun-Di Huang, Guang-Zhi Zeng

“…Moreover, the increase of jet velocity results in a significant decrease in slipstream velocities but an increase in turbulent vorticity, intensity and kinetic energy underneath the leading bogie after the jet slot. …”
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Seasonal Features and a Case Study of Tropopause Folds over the Tibetan Plateau by Jiali Luo, Wenjun Liang, Pingping Xu, Haiyang Xue, Min Zhang, Lin Shang, Hongying Tian

“…A medium fold event that occurred on 29 December 2018 is used to demonstrate the evolution of a tropopause fold case over the TP in winter; that is, the folding structure moves from west to east, the tropopause pressure is greater than 320 hPa over the folding region, while it is about 200 hPa in the surrounding areas, and the stratospheric air with high potential vorticity (PV) is transported from the high latitudes to the plateau by meridional winds. …”
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Classification of North Atlantic and European extratropical cyclones using multiple measures of intensity by J. Cornér, C. Bouvier, B. Doiteau, B. Doiteau, F. Pantillon, V. A. Sinclair

“…Based on the correlations and the sparse principal component analysis, we find that five intensity measures, namely 850 hPa relative vorticity, 850 hPa wind speed, wind footprint, precipitation, and a storm severity index, describe ETC intensity comprehensively and non-redundantly. …”
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Conjugate heat dissipation characteristics of concurrent flow of pure water/water-based nano-emulsion through a mini- and micro-channel stacked double-layer heat sink by C.J. Ho, Jr-Wei Liao, Bo-Lin Chen, Saman Rashidi, Wei-Mon Yan

“…The three-dimensional velocity field in the channel is calculated by the pseudo-vorticity-velocity method, and the finite volume method is used to discrete the mathematical formulas. …”
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Vortex gust mitigation from onboard measurements using deep reinforcement learning by Brice Martin, Thierry Jardin, Emmanuel Rachelson, Michael Bauerheim

“…We evaluate the performance of this method for gusts composed of one to five vortices. Our results show that (i) controllers deployed with full knowledge of the vortices are able to mitigate efficiently the lift disturbance induced by the gusts, (ii) the KPF performs well in reconstructing gusts composed of less than three vortices, but shows more contrasted results in the reconstruction of gusts composed of more vortices, and (iii) adding a KPF to the controller recovers a significant part of the performance loss due to the unobservable gust vortices.…”
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Phase-Averaged Method Applied to Periodic Flow Between Shrouded Corotating Disks by Shen-Chun Wu, Yau-Ming Chen

“…The outer region is distinguished by the presence of large vortical structures. The number of vortical structures corresponds to the normalized frequency of the flow.…”
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Geometrical Classification of Self-Similar Motion of Two-Dimensional Three Point Vortex System by Deviation Curvature on Jacobi Field by Yuma Hirakui, Takahiro Yajima

“…The self-similar motions of three point vortices are classified into two types, expansion and collapse, when the relative distances vary monotonously. …”
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Study on the Vortex-Induced Vibration Performance of the LSOB Girder of a Valley-Crossing Suspensions Bridge by Weihong Ji, Yu Lin, Shaopeng Yang, Lin Huang

“…Installing the lower central stabilizing plate helps redistribute vortices below the girder, transforming large vortices into smaller ones, most of which do not detach, thereby reducing vortex shedding intensity in the wake area. …”
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New Theories on Boundary Layer Transition and Turbulence Formation by Chaoqun Liu, Ping Lu, Lin Chen, Yonghua Yan

“…The energy transferring from large vortices to small vortices is carried out by multiple level sweeps, but does not follow Kolmogorov's theory that large vortices pass energy to small ones through vortex stretch and breakdown. …”
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Numerical investigation of the collision of a vortex ring with a wavy sphere by Nguyen Van Luc, Le Tuan Phuong Nam, Phan Toai Tuyn

“…These vortices dissipate rapidly at n=5, whereas reconnection occurs to form additional vortex loops at n=9. …”
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Towards analogue black hole merger by Solnyshkov, Dmitry, Septembre, Ismaël, Malpuech, Guillaume

“…Our work therefore suggests that polariton condensates with quantum vortices represent a setting with a fully self-consistent dynamical metric for broad analogue studies.…”
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Melville and the Vortex Theory of Matter by Paweł Stachura

“…In a universe based on the vortex theory of matter, a subject is not in a vortex, but is itself a vortex, continuously meshing with other vortices, in a basket-like, tightly knit lattice that comprises everything. …”
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Manipulation of 2D and 3D Magnetic Solitons Under the Influence of DMI Gradients by Rayan Moukhader, Davi Rodrigues, Eleonora Raimondo, Vito Puliafito, Bruno Azzerboni, Mario Carpentieri, Abbass Hamadeh, Giovanni Finocchio, Riccardo Tomasello

“…Our results show that Néel and Bloch-type skyrmions, as well as radial vortices, exhibit motion characterized by finite skyrmion Hall angles, while circular vortices undergo expulsion dynamics. …”
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On the Regular Integral Solutions of a Generalized Bessel Differential Equation by L. M. B. C. Campos, F. Moleiro, M. J. S. Silva, J. Paquim

“…The original Bessel differential equation that describes, among many others, cylindrical acoustic or vortical waves, is a particular case of zero degree of the generalized Bessel differential equation that describes coupled acoustic-vortical waves. …”
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Suppression of the Karman vortex behind a circular cylinder by ON-OFF control using the pressure gradient by Yusho ISHIKAWA, Itsuro HONDA, Takao SATO

“…Therefore, the conventional method can only be applied to flow fields where regular vortices are generated, and is considered impractical. …”
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Complex 3D Vortex Lattice Formation by Phase-Engineered Multiple Beam Interference by Jolly Xavier, Sunil Vyas, Paramasivam Senthilkumaran, Joby Joseph

“…Various computational analytical tools are used to verify the presence of engineered geometry of vortices in these complex 3D vortex lattices.…”
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Wind Turbine Aerodynamic Performance by Lifting Line Method by Horia Dumitrescu, Vladimir Cardos

“…The turbine blades are replaced by lifting lines and trailing vortices which shed along the blade span. The model is not a free wake model, but it is still a nonlinear one which should be solved iteratively. …”
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Characterization of Flow Interactions in a One-Stage Shrouded Axial Turbine by Adel Ghenaiet

“…The flow structures are mainly in the form of vanes’ wakes and vortices inducing circumferential distortions and interacting with the rotor blades. …”
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Pinning in High-Tc Superconductors by Ernst Helmut Brandt

“…Magnetic flux can penetrate a type-II superconductor in the form of flux-lines or Abrikosov vortices, each of which carry a quantum of flux and arrange in a more or less regular triangular lattice. …”
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Simulation of a Centrifugal Pump by Using the Harmonic Balance Method by Franco Magagnato, Jinfeng Zhang

“…A detailed analysis of the flow fields at different flow rates shows that the flow rate has an evident influence on the flow fields. At 0.6Qd, some vortices begin to appear in the impeller, and at 0.4Qd some vortices have blocked the flow passage. …”
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