Y
Yisheng Gao
Researcher at University of Texas at Arlington
Publications - 22
Citations - 1556
Yisheng Gao is an academic researcher from University of Texas at Arlington. The author has contributed to research in topics: Vortex & Vorticity. The author has an hindex of 12, co-authored 20 publications receiving 880 citations. Previous affiliations of Yisheng Gao include Nanjing University of Aeronautics and Astronautics.
Papers
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Journal ArticleDOI
Rortex A New Vortex Vector Definition and Vorticity Tensor and Vector Decompositions
TL;DR: In this article, the existence of the rotational axis is proved through real Schur decomposition, and a fast algorithm for calculating Rortex is also presented based on the real-Schur-decomposition.
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Third generation of vortex identification methods: Omega and Liutex/Rortex based systems
Chaoqun Liu,Yisheng Gao,Xiang-rui Dong,Yiqian Wang,Jian-ming Liu,Jian-ming Liu,Yuning Zhang,Xiao-shu Cai,Nan Gui +8 more
TL;DR: Liutex/Rortex is a new physical quantity with scalar, vector and tensor forms exactly representing the local rigid rotation of fluids as mentioned in this paper, which can be considered as the second generation of vortex identification methods.
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Rortex—A new vortex vector definition and vorticity tensor and vector decompositions
TL;DR: In this paper, the existence of the possible rotational axis is proved through real Schur decomposition, and a fast algorithm for calculating Rortex is also presented, which can reasonably represent the local fluid rotation and provide a new powerful tool for vortex dynamics and turbulence research.
Journal ArticleDOI
Rortex and comparison with eigenvalue-based vortex identification criteria
Yisheng Gao,Chaoqun Liu +1 more
TL;DR: In this article, an alternative eigenvector-based definition of Rortex is introduced, in which the direction of the possible axis of the local rotation is determined by the real eigen vector of the velocity gradient tensor.
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New normalized Rortex/vortex identification method
TL;DR: In this paper, a new vortex identification criterion, named ΩR, is proposed for the normalization of Rortex, using the idea of the Omega method (Ω), which is a normalized function from 0 to 1, which measures the relative rotation strength on the plane perpendicular to the local rotation axis.