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[期刊论文] 作者：Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2021
Fluid kinematics describes the fluid motion without consideration of any force.Classical fluid kinematics adopts Helmholtz velocity decomposition,which is equivalent to Cauchy-Stokes(CS)velocity gradient tensor decomposition.CS decomposes t......
[期刊论文] 作者：Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2021
Classical fluid kinematics or Cauehy-Stokes decomposition mistreated vorticity as fluid rotation and mixed flow stretching with shearing.Classical fluid dynamics or Navier-Stokes (N-S) equations are based on the classical kinematics and tre......
[期刊论文] 作者：ChaoQun Liu,XiaoShu Cai,
来源：首届“涡和湍流若干关键问题研究进展和再认识”研讨会 年份：2017
(1) Turbulence is a world puzzle.After over one century research effort,"Turbulence" is still a world puzzle(Wikipedia website at http://en.wikipedia.org/wiki/Turbulence)....
[期刊论文] 作者：Yi-qian Wang,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
The vortex core detection method based on the Liutex vector is utilized to investigate the alternation of vortical structures on a boundary layer transition subjected to spanwise-wall oscillation. Compared with iso-surface based methods, th......
[期刊论文] 作者：Sita Charkrit,Pushpa Shrestha,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2020
In this study,the new method of the vortex core line based on Liutex definition,also known as Liutex core line,is applied to support the hypothesis that the vor...
[期刊论文] 作者：ChaoQun Liu,YiQian Wang,Yong Y,
来源：中国科学：物理学、力学、天文学英文版 年份：2016
A new vortex identification criterion called W-method is proposed based on the ideas that vorticity overtakes deformation in vortex.The comparison with other vo...
[期刊论文] 作者：Yu-ning Zhang,Xiao-yu Wang,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
The present paper presents comparisons of the vortex identification between the Omega method and the Q criterion based on the data of a classical flow.From the comparisons of the vortex structure together with the flow statistics,some impor......
[期刊论文] 作者：Hongyi Xu,Xiao-shu Cai,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
As a milestone research in vortex identification (VI), the physical quantity of Liutex, including its forms of scalar, vector and tensor, was systematically explored and rigorously obtained as the third-generation (3G) of the vortex definit......
[会议论文] 作者：Xiangrui Dong,Yiqian Wang,Xiaoping Chen,Chaoqun Liu,
来源：首届“涡和湍流若干关键问题研究进展和再认识”研讨会 年份：2017
The epsilon ε,which is introduced in Omega vortex identification criterion(Ω method)proposed by Liu et al.[1],has been determined as a function ε = 0.001...
[会议论文] 作者：ChaoQun Liu,YiQian Wang,Yong Yang,ZhiWei Duan,
来源：首届“涡和湍流若干关键问题研究进展和再认识”研讨会 年份：2017
A new vortex identification criterion called Ω-method is proposed based on the ideas that vorticity overtakes deformation in vortex. The comparison with ot...
[期刊论文] 作者：Xiang-rui Dong,Xiao-shu Cai,Yinlin Dong,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2020
The Liutex core line method, first combined with the snapshot proper orthogonal decomposition (POD), is utilized in a supersonic micro-vortex generator (MVG) wake flow at Ma=2.5 and Reθ=5760 to reveal the physical significance of each POD ......
[期刊论文] 作者：Yifei Yu,Pushpa Shrestha,Charles Nottage,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2020
Helmholtz velocity decomposition and Cauchy-Stokes tensor decomposition have been widely accepted as the foundation of fluid kinematics for a long time. However, there are some problems with these decompositions which cannot be ignored. Fir......
[期刊论文] 作者：Jian-ming Liu,Yi-qian Wang,Yi-sheng Gao,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
In the new vortex identification method (Liu et al.2016) to represent the rotation level and capture and visualize the vortices,proposed in our previous study,the independence of the reference frame and the Galilean invariant were not prove......
[期刊论文] 作者：Yi-sheng Gao,Jian-ming Liu,Yi-fei Yu,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
Six core issues for vortex definition and identification concern with (1) the absolute strength,(2) the relative strength,(3) the rotational axis,(4) the vortex core center,(5) the vortex core size,and (6) the vortex boundary (Liu C.2019).H......
[期刊论文] 作者：Jian-ming Liu,Yi-sheng Gao,Yi-qian Wang,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
A new vortex identification method (Liu et al.2016) was proposed to represent the rotation relative strength and capture and visualize the vortices in our previous study.The basic idea of the Ω method is that a ratio of the vorticity squar......
Explicit formula for the Liutex vector and physical meaning of vorticity based on the Liutex-Shear d
[期刊论文] 作者：Yi-qian Wang,Yi-sheng Gao,Jian-ming Liu,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2019
In the present study,the physical meaning of vorticity is revisited based on the Liutex-Shear (RS) decomposition proposed by Liu et al.in the framework of Liutex (previously called Rortex),a vortex vector field with information of both rota......
[期刊论文] 作者：Jinlian Liu,Qing Zhou,Chaoqun Liu,Chunfeng Liu,Saijilafu,
来源：中国神经再生研究（英文版） 年份：2020
Following nerve injury,axonal disconnection in neurons usually results in persistent functional deficits,such as paralysis.However,axons in the adult mammalian...
Prediction of the precessing vortex core in the Francis-99 draft tube under off-design conditions by
[期刊论文] 作者：Cong Trieu Tran,Xin-ping Long,Bin Ji,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2020
The turbulent flow in the draft tube of a Francis turbine is very complicated while working under off-design conditions. Althoughthe off-design conditions were widely studied, the vortex core line in the draft tube of a Francis turbine with......
[期刊论文] 作者：Bin He,Zhipeng Wang,Chaoqun Liu,Yonggang Li,Runjie Shen,
来源：黑龙江科技信息 年份：2012
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[期刊论文] 作者：Yifei Yu,Pushpa Shrestha,Oscar Alvarez,Charles Nottage,Chaoqun Liu,
来源：水动力学研究与进展B辑 年份：2020
Influenced by the fact that vorticity represents rotation for rigid body,people believe this idea also works for fluid flow.However,the vortex predictions by vo...
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