Vortex 2025 Tentative Agenda (Dec 13-16, 2025)

Short Course (Dec 13-14, 2025)

Day one Tentative Agenda (Saturday, Dec 13, 2025)
TimeSessions/TopicsLecturer
8:00 amBus pickup at the hotel (Crowne Plaza Arlington Hotel)
8:30 – 10:00 amThree generations of vortex definition and identificationChaoqun Liu
10:00 – 10:30 amGroup Photo and Coffee Break
10:30 – 12:00 noonLiutex definition: Local rotation and global rotationChaoqun Liu
12:00 – 1:30 pmLunch
1:30 – 3:00 pmLiutex and third generation of vortex identification methods and its applicationsChaoqun Liu
3:00 – 3:30 pmCoffee Break
3:30 – 5:00 pmTriple decomposition of velocity gradient tensor and new Liutex-based fluid kinematicsChaoqun Liu
5:00 pmBus pickup at SEIR Building in UTA
Day two Tentative Agenda (Sunday, Dec 14, 2025)
TimeSessions/TopicsLecturer
8:00 amBus Pickup at the Hotel
8:30 – 10:00 amLiutex-based vortex identification methodsYifei Yu
10:00 – 10:30 amCoffee Break
10:30 – 12:00 noonLiutex-similarity in turbulent boundary layers, vortex and resistance, matrix form of fluid dynamicsChenxi Ma
12:00 – 1:30 pmLunch
1:30 – 3:00 pmLiutex-based Subgrid models for LESJiawei Chen
3:00 – 3:30 pmCoffee Break
3:30 – 5:00 pmLiutex code release and practiceOscar Alvarez
5:00 pmBus pickup at SEIR Building in UTA

Conference (Dec 15-16, 2025)

Day one Conference Tentative Agenda
TimeSpeaker’s Name & InstituteTitle
8:00 amBus pickup at the hotel
8:30 amKate Miller, UTA Vice Present of ResearchWelcome Speech
8:50 amGroup Photo
A. Vortex Theories
Session Chair: Oskar Steiner
9:00 amChaoqun Liu
University of Texas at Arlington, Texas, USA, cliu@uta.edu		Progress in Liutex Theory, Methods and Applications.
9:30 amFazle Hussain – Invited
Texas Tech University, USA
Fazle.Hussain@ttu.edu		Vortex dynamics in various flow
phenomena.
10:00 amYifei Yu and Chaoqun Liu
University of Texas at Arlington, Texas, USA
yifei.yu@uta.edu		An Innovative Sub-Grid Model
by Liutex and Unresolved
Convection Prediction.
10:30 amCoffee Break
Session Chair: Xi Li
11:00 amJakub Sistek – Invited
Institute of Mathematics of the Czech Academy
of Sciences, Czechia.
sistek@math.cas.cz		Two complementary eigen- based geometric properties of
a vortex.
11:30 am Philips Ligrani – Invited
University of Alabama in Huntsville, Huntsville,
Alabama, USA.
pml0006@uah.edu;		Vortex Development and
Quantification Within Complex
Mechanical and Aerospace
Engineering Flow Environments.
12:00 pmBREAK
Session Chair: Jakub Sistek
1:00 pmKatsuyuki Nakayama
Department of Mechanical Engineering, Aichi Institute
of Technology, Japan.
nakayama@aitech.ac.jp		A Foundational Asymmetric
Vortex Model Based on Local
Flow Geometry and Interaction
with Bundle of Vorticity Lines.
1:30 pm Hongyi Xu, Yifan Wang, Yang Liu, Chenchen Zhao, Duo Wang, Shuaichen Zhu, Chongbin Ma,
Department of Aeronautics and Astronautics, Fudan University, Shanghai 200433, China;
hongyi_xu@fudan.edu.cn		Important Fluid Mechanics
Research Progresses Built Upon
the Comprehensive Wall-
Turbulence DNS Big Data and Liutex Theory.
B. Vortex Identification Methods
2:00 pmOskar Steiner – Invited
Istituto ricerche solari Aldo e Cele Daccó, Switzerland. oskar.steiner@irsol.usi.ch		Vortices and Application of the
Liutex in Solar and stellar
Atmospheres.
2:30 pmYifei Yu, Oscar Alvarez, Chenxi Ma, Chaoqun Liu
University of Texas at Arlington, Arlington, TX, USA
oscar.alvarez@uta.edu		Advancements in Liutex-Based
Vortex Identification: Core Lines
and Objectivity.
3:00 pmCoffee Break
Session Chair: Hongyi Xu
3:30 pmMarek Pátý 1, Sergio Lavagnoli 2
1. Institute of Mathematics, Czech Academy of
Sciences
2. Turbomachinery and Propulsion Department, von Karman Institute for Fluid Dynamics,
paty@math.cas.cz;		Vortex Region, Core-Line and
Strength Characterization Based
on Residual Vorticity.
4:00 pm Li Xi – Invited
McMaster University Hamilton, Ontario, Canada.
xili@mcmaster.ca;		Automated Vortex Analysis
through Axis-line Extraction
Using the VATIP Algorithm.
4:30 pmEdgardo García (- Invited ) and Fazle Hussain
Texas Tech University, USA,
Edgardo.Garcia@ttu.edu		Transfer entropy insights into
vortical structure dynamics in
wall turbulence with pressure
gradients, roughness and heat
transfer.
5:00 pmBus Pickup at SEIR Building
7:30 pm Committee Meeting
Day two Conference Tentative Agenda
TimeSpeaker’s Name & InstituteTitle
8:00 amBus pickup at the hotel
C. Experiment
Session Chair: Kostas Tziotziou
8:30 amFulvio Scarano – Invited
Delft University of Technology, Netherlands.
f.scarano@tudelft.nl		4D-measurements in vortex
dominated flows at varying
scales.
9:00 amÁmbar Garófano Soldado – Invited
Delft University of Technology, Netherlands.
a.garofanosoldado@tudelft.nl		Multi-scale vortex detection for
vortex Ring State
characterization.
D. Theory, Methods and Applications
9:30 amYasuhide Fukumoto 1,2, and Yusaku Asao3
1 Institute of Mathematics for Industry, Kyushu
University, Japan
2 Osaka Central Advanced Mathematical Institute,
Japan
3 Graduate School of Mathematics, Kyushu
University, Japan
yasuhide@imi.kyushu-u.ac.jp		Vorticity and Cross Helicity of
Relativistic Non-Isentropic
Magnetohydrodynamics.
10:00 amYifei Yu and Maryam Sangi
Campus Tour and Coffee Break
10:30 amKostas Tziotziou – Invited
IAASARS, National Observatory of Athens, Greece.
kostas@noa.gr		Dynamics and detection of
vortices on the Sun.
11:00 am Sandra Rugonyi – Invited
Oregon Health & Science University Portland, USA.
rugonyis@ohsu.edu		Cardiac vortex formation in
health and disease.
11:30 amSim Aberson – Invited
NOAA/Atlantic Oceanographic and Meteorological
Laboratory, Florida, USA
sim.aberson@noaa.gov		Vortices in the Development
and Maintenance of Tropical
Cyclone.
12:00 pmBREAK
1:00 pmYonghua Yan – Invited
Jackson State University, Jackson, USA
Yonghua.yan@jsums.edu		Liutex and machine learning base 3D flow
prediction.
Session Chair: Fulvio Scarano
1:30 pmMaryam Sangi
Yifei Yu, Oscar Alvarez, Chenxi Ma,
Chaoqun Liu.
mns8903@mavs.uta.edu;		A novel Sub-Grid model with anisotropic
eddy viscosity based on Liutex vector.
2:00 pmOnur Mutlu 1, Oscar Alvarez 2, Maryam
Sangi 2, Theodore P. Abraham 3, Yifei Yu
2, Chaoqun Liu 2, Sandra Rugonyi 1
Oregon Health & Science University,
Portland, USA.2. University of Texas at
Arlington, Arlington, USA
University of California, San Francisco,
USA.
mutlu@ohsu.edu;		Coupled Fluid-Structure Interaction and
Liutex-Based Vortex Core Analysis for the
Hemodynamic Assessment of
Hypertrophic Cardiomyopathy.
2:30 pmChenxi Ma; Chaoqun Liu
University of Texas at Arlington, Texas,
USA.
cxm0091@mavs.uta.edu;		Liutex Dynamics based on Matrix
Governing Equation for Incompressible
Flow.
3:00 pmCoffee Break
3:30 pmE. Pannel Discussion
Session Chair: Sandra Rugonyi
5:00 pmBus Pickup at SEIR Building
Day three Conference Tentative Agenda
Time Speaker’s Name & InstituteTitle
Session Chair: Maryam Sangi
7:30 amVoropaiev G.A., Zagumennyi Ya.V., Baskova
A.A.Institute of Hydromechanics NAS of
Ukraine voropaiev.gena@gmail.com;		The emergence of a vortex structure
in the boundary layer during the
transition to turbulence.
8:00 amYiqian Wang.
School of Mathematical Sciences, Soochow
University, China yiqian@suda.edu.cn;		Subgrid-Scale Modeling for Large Eddy
Simulation Based on Vortex Identification
Methods and Its Applications.
8:30 amKazuo Matsuura
Faculty of Informatics, Matsuyama University,
Japan. kazuo.matsuura@g.matsuyama-u.ac.jp;		Combination of the Hierarchical Vortex
Clustering Method with Liutex and Its
Application to Compressible Boundary
Layers and Jets.
9:00 amDecheng Wan
Shanghai Jiao Tong University, China
dcwan@sjtu.edu.cn;		Liutex Vortex Identification Method
for Analysis of Flow Structure in
Marine Hydrodynamics.
9:30 amYevhenii Shkvar1,2
1.College of Engineering, Zhejiang Normal
University, China. 2. Institute of
Hydromechanics of the National Academy of
Sciences of Ukraine, Ukraine.
shkvar.eugene@qq.com, eush@ukr.net;		Comparative Analysis of Turbulent
Flow Control Using Leading-Edge
Vortex Generators and Large Eddy
Breakup Devices.
Session Chair: Chenxi Ma
10:00 amWeibo Zhong, Yumeng Tang and Yangwei
Liu1,3,* * Corresponding Author:
Beihang University, Beijing, China
liuyangwei@buaa.edu.cn;		Correlations between kinematic flow
components decomposed by Liutex
and local flow patterns.
10:30 amBosen CHAI, Hengte GONG, Qiulin ZHENG,
Xiaoyu MING, Yi REN, and Tianyi ZHAO
Jilin University, Changchun , China.
chaibs2012@jlu.edu.cn;
Alternate Email ID: gonght24@jlu.edu.cn;		Research on Numerical Simulation of
Flow Field and Vortex Reconstruction
Method in Hydraulic Torque
Converter.
11:00 amBosen CHAI, Xiaoyu MING, Wenhe FAN,
Hengte GONG ,Yi REN , and Tianyi ZHAO
Jilin University, Changchun 130025, Jilin, China.
chaibs2012@jlu.edu.cn
mingxy24@mails.jlu.edu.cn		Numerical Simulation of Flow Field
and Vortex Structure Reconstruction
Method for Centrifugal-ValveEquipped Hydrodynamic Coupling.
11:30 amBosen CHAI, Yi REN, Jun PAN, Xiaoyu MING,
Hengte GONG, and Tianyi ZHAO
Jilin University, Changchun 130025, Jilin, China.
Email: chaibs2012@jlu.edu.cn;
Alternate: renyi24@jlu.edu.cn;		Vortex-Resolved Simulation of Oil- Churning Flow in Commercial Vehicle
Gearboxes.
12:00 amYuli D. Chashechkin
Ishlinsky Institute for Problems in Mechanics
RAS, Moscow, Russia; yulidch@gmail.com;		Observational, logical and mathematical
foundations of the complete theory
calculating flows dynamics and structure.
12:30 pmBreak
Session Chair: Riya Gohil
1:30 pmGoodarz Ahmadi1, Farid Rousta1, Bamdad Lessani2, and Chaoqun Liu3
1. Clarkson University, Potsdam, NY, USA
2. The University of North Carolina at Charlotte, USA
3. University of Texas at Arlington, Arlington, TX, USA
gahmadi@clarkson.edu;		Liutex Identification of NearWall Coherent Structures in
Turbulent Two-Phase Flows.
2:00 pmQazi Ashique E Mowla1, Shah Md Imran Kabir2, and
Habib Ahmari1
The University of Texas at Arlington, Arlington, USA
(corresponding author)
Water Resources Engineer, Pape-Dawson Engineers,
Fort Worth, USA qaziashiquee.mowla@uta.edu;		Experimental Investigation of
Vortex-Induced Forces on
Bridge Decks and Scour
Around Piers.
2:30 pmKwan-yin Kong
Weather Prediction Center
College Park, MD
kwanyin.kong@gmail.com;		A continuous vortex wind speed
formula for studying the internal
dynamics of tropical cyclones
via the Omega Tendency
Equation.
3:00 pmChenxi Ma, Chaoqun Liu, University of Texas at
Arlington, Arlington, Texas, USA,
chenxi.ma@mavs.uta.edu		Liutex Dynamics Analysis for
Incompressible Flow.
3:30 pmOscar Alvarez, Jiawei Chen, Yifiei Yu, Chaoqun Liu
University of Texas at Arlington, USA
oscar.alvarez@mavs.uta.edu;		Comparison of Normalized
Liutex Methods.
4:00 pmZhining Liu 1, Emran Hossen2, Yifei Yu2, Oscar Alvarez2,
Chaoqun Liu2,
1.HyPerComp Inc., Westlake Village, CA, USA,
University of Texas at Arlington, Arlington, Texas, USA,
zliu@hypercomp.net;
exh9212@mavs.uta.edu;		LES of Turbulent BackwardFacing Step Flow Using the
Liutex SGS Model: A
Comparative Study with Pitz
and Daily’s Experiment.
4:30 pmYifei Yu,
Department of Mathematics, University of Texas at
Arlington, Arlington, USA.
Yifei.yu@uta.edu		Connection and Difference
between Liutex and Schur
Decomposition.
Session Chair: Yifei Yu
5:00 pmYifei Yu, Riya Pradipsinh Gohil, Maryam Sangi,
Krishna Prasad Acharya, Chaoqun Liu
Department of Mathematics, University of Texas at
Arlington, Arlington, Texas, USA
Yifei.yu@uta.edu;		Liutex-Based Modification of
the Wall Adapting Local Eddy
Viscosity Model for Large
Eddy Simulation.
5:30 pmYifei Yu, Maryam Sangi, Riya Pradipsinh Gohil, Krishna Prasad Acharya, Chaoqun Liu
University of Texas at Arlington, Arlington, TX, USA
yifei.yu@uta.edu;		Liutex-based Modification of
Vreman’s Model for Large
Eddy Simulation.
6:00 pmEmran Hossen and Chaoqun Liu
The University of Texas at Arlington, Arlington, Texas, 76013, USA. exh9212@mavs.uta.edu;		Machine Learning Framework for
Coefficient Adaptation in LiutexBased Subgrid model for Large Eddy Simulation.
6:30 pmJiawei Chen12, Yifei Yu1, Maryam Sangi1, Chaoqun Liu1
1.Department of Mathematics, University of Texas at Arlington, Arlington, Texas, USA.
2.Department of Aerospace Engineering, Iowa State University, Ames, USA.		Relative Liutex based subgrid
model for wall-bounded flows.
7:00 pmChaoqun LiuClosing Remarks

VORTEX2025 – International Conference on Vortex Definition and Prediction Sponsored by

The US National Science Foundation and University of Texas at Arlington