Results 1 to 10 of about 601,407 (253)
Definitions of vortex vector and vortex [PDF]
Journal of Fluid Mechanics, 2018 Although the vortex is ubiquitous in nature, its definition is somewhat ambiguous in the field of fluid dynamics. In this absence of a rigorous mathematical definition, considerable confusion appears to exist in visualizing and understanding the coherent vortical structures in turbulence.
Shuling Tian +3 more
openaire +4 more sources
Journal of the ACM, 2022 The Graph Minors Structure Theorem of Robertson and Seymour asserts that, for every graph H , every H -minor-free graph can be obtained by clique-sums of “almost embeddable” graphs. Here a graph is “almost embeddable” if it can be obtained from a graph of bounded Euler-genus by pasting graphs
Dimitrios M. Thilikos +1 more
openaire +2 more sources
Vortex waistlines and vortex gas [PDF]
Nuclear Physics B - Proceedings Supplements, 2002 Lattice2001(confinement), 3 pages, 1 eps figure ...
E. T. Tomboulis, Tamás G. Kovács
openaire +4 more sources
Influence of Spherical and Pyramidical Dimples and Bumps on Airfoil Performance in Subsonic Flow [PDF]
Journal of Aerospace Technology and Management, 2021 In this study, surface features such as dimples and bumps are introduced to the surface of a NACA 0012 airfoil to study their effect on boundary layer separation, particularly at high angles of attack. Six modified airfoils were designed with dimples and
Zahra Mehtar, Afaq Altaf
doaj +1 more source
Vortex Identification in a Free-Surface Flow Problem Solved Using SPH [PDF]
MATEC Web of Conferences, 2022 This article focuses on vortex structure identification methods and their implementation into smoothed particle hydrodynamics (SPH) framework. The most common criteria based on the local velocity gradient tensor analysis like Q-criterion, Δ-criterion ...
Jančík Petr, Hyhlík Tomáš
doaj +1 more source
Nuclear Physics B, 2002 We show that the Abelian Higgs field equations in the four dimensional anti de Sitter spacetime have a vortex line solution. This solution, which has cylindrical symmetry in AdS$_4$, is a generalization of the flat spacetime Nielsen-Olesen string. We show that the vortex induces a deficit angle in the AdS$_4$ spacetime that is proportional to its mass ...
M. H. Dehghani +2 more
openaire +4 more sources
AI, 2023 Vehicle detection in parking areas provides the spatial and temporal utilisation of parking spaces. Parking observations are typically performed manually, limiting the temporal resolution due to the high labour cost.
Kayal Lakshmanan +9 more
doaj +1 more source
Frontiers in Earth Science, 2022 Blizzard is a severe weather-related disaster with significant environmental, economic, and social impacts. What is worse, the blizzard is increasingly frequent along with climate change.
Qi Yan +7 more
doaj +1 more source
Frontiers in Oncology, 2020 Lung cancer is the leading cause of cancer-related mortality worldwide. Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) therapies, based on the evaluation of EGFR mutations, have shown dramatic clinical benefits.
Haiyan E. Liu +19 more
doaj +1 more source