Lecture Title: Research on Mesoscale Particle Dynamics of Multiphase Reaction Fluid
Speaker: Professor Li Shuiqing
Lecture time: September 21, 2017 (Thursday) 15:00 pm
Lecture Venue: Minzhu Lake Lecture Hall, Area A
The dynamics of discrete phases in multiphase flow and reactive flow (ie combustion) is one of the important scientific issues in the field of engineering thermophysics. The generation and control of fine particulate matter is currently a key problem in the environmental field that has attracted much attention and needs to be solved urgently. The source of its formation is closely related to the energy, machinery, chemical and other industries. Specifically, the formation and deposition of fly ash particles in the combustion process, and the synthesis and regulation of materials in high-temperature environments are similar, and both need to understand the force and self-action process between different-scale particle media on a mesoscopic scale; The problems caused by dust particles in the process of moon and deep space exploration have accelerated the urgency of such research. In addition, the transport properties of fine particles on the micrometer scale are also one of the important international academic hotspots in the fields of complex fluids, colloidal science, and soft matter science. In view of the fact that the discrete granular medium on the mesoscale is difficult to express by continuum fluid dynamics and statistical thermodynamics, the reporter used the methodology of molecular dynamics for reference and developed a particle discrete dynamics method suitable for multi-physics and multi-phase reaction systems ( DEM), combined with some examples in energy and environmental engineering, such as fine particulate matter combustion generation mechanism and diagnostic methods, coordinated control of ultra-low fine particulate matter emissions, coal-fired boiler fly ash particle deposition mechanism, moon dust deposition and accumulation, etc. to systematically introduce the research work .
Introduction of the presenter：
Li Shuiqing, professor and doctoral supervisor of the Department of Thermal Engineering of Tsinghua University, was selected as a member of the New Century Excellent Talents Support Program of the Ministry of Education, Tsinghua University's 221 Basic Talent Research Program, funded by the National Science Fund for Outstanding Youth, and served as the Office of Disciplinary Planning and Development of Tsinghua University Deputy director, member of the Graduate Admissions Committee, etc. Graduated from Zhejiang University in 1997 and 2002 with bachelor's and doctoral degrees; worked as a postdoctoral fellow at Tsinghua University from 2002 to 2004, and stayed at the university until now; worked at Leeds University, University of Iowa, Princeton University and Yale University successively Engaged in visiting cooperative research.
The main research directions include particle flow and particle dynamics, combustion dynamics and stability control, clean coal combustion basics, fine particle control technology, etc., presided over the completion or research of 7 general projects of the National Natural Science Foundation of China, and scientific research projects of the 5th Academy of Aerospace Engineering 5 items and 1 key research and development topic of the Ministry of Science and Technology. Co-authored an academic monograph "Adhesive Particle Flow" by Cambridge University Press, and published 88 papers included in SCI, which were published in the top journal Prog. Eng. Combust. Sci. in the energy category and the top journals in the physics category Phys. Rev. Lett. and Apply . Phys. Lett., etc., he cited more than 1,000 papers, H-index 23, and more than 10 authorized invention patents.