The International Multiphase Flow Technology Forum (13)
发布时间:2022年10月28日 来源:中国颗粒学会
IMFTF Keynote Meeting (13) Schedule
Date & Time: Fri, 28 Oct. 2022, 19:00
Chair:
Professor Kun Luo, Zhejiang University
Opening:
(19:00 - 19:05 Beijing Time)
Programme:
Keynote Speech-1
(19:05 – 19:45 Beijing Time)
Postdoc researcher
Kai Liu
Zhejiang University
Q&A
(19:45 – 20:00 Beijing Time)
Keynote Speech-2
(20:00 – 20:40 Beijing Time)
Distinguished Professor
Sivaramakrishnan Balachandar
University of Florida
Q&A
(20:40 – 20:55 Beijing Time)
Discussions, closing
(20:55 – 21:00 Beijing Time)
Platform: Zoom
https://us02web.zoom.us/j/87036567996?pwd=bjVxL0hTSWNFSTc5Z3RZaUw2UWdpUT09
Meeting ID: 870 3656 7996
Passcode: 1028
Organizers
International Multiphase Flow Technology Forum
Shanghai Institute For Advanced Study, Zhejiang University
China University of Petroleum-Beijing
Chinese Society of Particuology
View Live
Channel(视频号)
Bilibili(b站)
Keynote Speech-1
Two-way Coupled Euler-Lagrange Simulations of Mid-field Spray: Droplet Inflow and Dynamics Modeling
Kai Liu
Postdoc researcher
Zhejiang University, China
Sprays widely exist, from aero-engine injectors to pandemic contagion. Investigating the background physics and developing reliable models are necessary to better predict and control spray systems. In order to produce highly consistent simulation results with the experiment, a series of droplet inflow and dynamic models have been developed and rigorously validated. This presentation will focus on the two-way coupled Euler-Lagrange simulations of the mesoscopic mid-field spray, where all droplets are fully-disperse. A stochastic particle injection model fitted from experimental data is developed to substitute massive interface-resolved simulation in the near field. The result shows that the position, diameter, and velocity distributions of droplet clouds throughout the simulation domain faithfully agree with experimental measurements. Considering the poly-disperse characteristic of droplet cloud, in which large-size droplets may violate the small particle approximation of most Euler-Lagrange point-particle models, self-induced velocity and temperature correction models are correspondingly developed to further improve the drag and heat transfer prediction accuracy of individual droplets. Finally, two applications of acoustic spray control and human sneeze will be introduced to highlight the application potential of Euler-Lagrange spray simulation in analyzing practical problems.
Speaker Information
Education:
B.S., Energy Power System and Automation, Xi’an Jiaotong University, China, 2014
M.S., Mechanical Engineering, University of Florida, US, 2016
Ph.D., Mechanical Engineering, University of Florida, US, 2020
Awards:
Dissertation Award Thermal Sciences and Fluid Dynamics 2020-2021, University of Florida, US
2020 Chinese Government Award for Outstanding Self-financed Students Abroad, China Scholarship Council
Work Experience:
Postdoc, College of Energy Engineering, Zhejiang University, China, 2022-present
Selected Publications:
1. K. Liu K ; P.D. Huck; A.Aliseda; S. Balachandar ; Investigation of turbulent inflow specification in Euler-Lagrange simulations of mid-field spray, Physics of Fluids, 2021, 33(3)
2. K. Liu K ; M. Allahyari; J. Salinas; N. Zgheib; S. Balachandar ; Investigation of theoretical scaling laws using large eddy simulations for airborne spreading of viral contagion from sneezing and coughing, Physics of Fluids, 2021, 33(6)
3. Kai Liu K ; Mandar Lakhote; S. Balachandar ; Self-induced temperature correction for inter-phase heat transfer in Euler-Lagrange point-particle simulation, Journal of Computational Physics, 2019, 396: 596-615
Email:
1240270754@qq.com
Keynote Speech-2
Physics-Inspired Machine Learning for Multiphase Flow Modeling
Sivaramakrishnan Balachandar
Distinguished Professor
University of Florida, Gainesville, FL
Euler-Lagrange (EL) and Euler-Euler (EE) techniques have been widely employed for solving particle, droplet, and bubble-laden flows. Since flow around the individual particles is not resolved, the accuracy of the technique depends on the fidelity of the point-particle force laws used. The main focus of this talk is the use of emerging machine learning techniques along with physical insight into the averaging processes involved in the EL and EE techniques can yield closures that recover fully-resolved-like accuracy at orders of magnitude lower cost.
Speaker Information
Education:
B. Tech. Mechanical Engineering Indian Institute of Technology 1983
Sc.M. Engineering Brown University 1985
Sc.M. Applied Mathematics Brown University 1986
Ph.D. Engineering Brown University 1988
Awards:
Gad Hetsroni Senior Award, International Conference on Multiphase Flow, Rio De Janeiro, Brazil, May 2019
Outstanding Alumnus Award, Indian Institute of Technology, Madras, March 2020
Doctoral Dissertation Advisor/Mentoring Award, University of Florida, April 2020
Thermal Fluids Engineering Award, American Society of Thermal Fluids Engineer, May 2022
Work Experience:
Distinguished Professor, University of Florida, Gainesville, FL, June 2016 – Present
Director, Institute for Computational Engineering, University of Florida, June 2011 – Present
Affiliate Professor, Dept of Civil and Costal Engineering, UF, Gainesville, FL, 2010 – Present
Chair, William F. Powers Professor of MAE, UF, Gainesville, FL, December 2005 - June 2011
Associate Head, Department of Theoretical & Applied Mechanics, University of Illinois, Urbana, IL, 2004 - April 2005
Professor, Department of Theoretical & Applied Mechanics, University of Illinois, 1990 - 2005
Selected Publications:
Ouellet, F., Rollin, B., Durant, B., Koneru, R. B., & Balachandar, S. Shock-driven dispersal of a corrugated finite-thickness particle layer. Physics of Fluids, 34(8), 083301 (2022).
Farzaneh, M., Zgheib, N., Sherif, S. A., & Balachandar, S. Sensitivity Analysis of Frost Deposition in Turbulent Flow over a Cold Plate using Direct Numerical Simulation. International Journal of Heat and Mass Transfer, 196, 123233 (2022).
Siddani, B., & Balachandar, S. Point-particle drag, lift, and torque closure models using machine learning: hierarchical approach and interpretability. arXiv preprint arXiv:2207.08888 (2022).
Yu, M., Yu, X., Balachandar, S., & Manning, A. J. (2022). Floc Size Distributions of Cohesive Sediment in Homogeneous Isotropic Turbulence. Frontiers of Earth Science, 10, 815652 (2022)
Email:
Bala1s@ufl.edu
Website:
https://www.eng.ufl.edu/ice/about/leadership/