典型文献
A letter for objective Liutex
文献摘要：
Vortex structures,detected by the existing popular vortex identification methods,of the same case are generally different if the results are measured by different observers,who are moving with different coordinate systems.These coordinate systems can be inertial or non-inertial.Galilean invariance can solve the moving observer problems in different inertial coordinate systems.A variable is invariant under Galilean transformation is called Galilean invariant.Galilean invariant vortex identification methods can provide invariant vortex structures based on different inertial observers.However,for some situations,the observers are non-inertial,e.g.,the observer is sitting on an aircraft which is accelerating or rotating.In such a situation,it requires to use an objective method.Objectivity represents a property that one variable is not observer-dependent(the observer's motion can be either inertial or non-inertial).A strategy based on a zero-vorticity(measured in inertial frame)reference point is proposed in this letter to find the objective vortex structure.Liutex is chosen as the vortex indicator and two numerical examples are used to test the proposed strategy.The results show that the strategy is effective.
文献关键词：
中图分类号：
作者姓名：
Yifei Yu;Yi-qian Wang;Chaoqun Liu
作者机构：
Department of Mathematics,University of Texas at Arlington,Arlington,Texas 76019,USA;School of Mathematical Science,Soochow University,Suzhou 215006,China
文献出处：
引用格式：
[1]Yifei Yu;Yi-qian Wang;Chaoqun Liu-.A letter for objective Liutex)[J].水动力学研究与进展B辑,2022(05):965-969
A类：
Galilean,Objectivity
B类：
letter,objective,Liutex,Vortex,structures,detected,by,existing,popular,vortex,identification,methods,same,case,are,generally,different,results,measured,observers,who,moving,coordinate,systems,These,can,be,inertial,invariance,solve,problems,variable,invariant,under,transformation,called,provide,However,some,situations,sitting,aircraft,which,accelerating,rotating,In,such,requires,represents,property,that,one,not,dependent,motion,either,strategy,zero,vorticity,frame,reference,point,proposed,this,find,chosen,indicator,two,numerical,examples,used,test,show,effective
AB值：
0.429988
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
