ZHANG
Yiyang
Associate
Professor of Nuclear Science and Engineering
Division of Reactor Structure
zhangyiyang@tsinghua.edu.cn
(+86
10) 62784824-8133
Education background
PhD,
Tsinghua University, Thermal Engineering, 2013
Visiting
student, Rutgers University, Mechanical and Aerospace Engineering,
2011-2012
B.S.,
Tsinghua University, Thermal Engineering, 2008
Experience
12/2017-present,
Associate Professor, Division of Reactor Structure, INET, Tsinghua University
07/2013-12/2017,
Assistant Professor, Division of Reactor Structure, INET, Tsinghua University
Social service
Teaching
Introduction
to Particle Transport
Nuclear
Power Plant Systems and Equipment
Journal Reviewer
Nucl.
Eng. Des., J. Aerosol Sci., Aerosol Sci. Tech., Fuel, Exp. Thermal Fluid Sci.,
Proc. Combust. Inst., Sci. Rep., J. Mater. Sci. C, Appl. Surf. Sci.,
Particuology, Canadian J. Phys. Etc.
Service to Professional Associations
Member,
American Nuclear Society (ANS)
Member,
American Association for Aerosol Research (AAAR)
Member,
Youth Committee for Chinese Society of Power Engineering
Areas of Research Interests/ Research Projects
Prof.
Zhang’s research interests are in the areas of reactor aerosol, complex
particulate flow, optical diagnostics, gas-phase synthesis of nano-materials,
etc..
Reactor aerosol and complex particulate flow
Exploring
the behaviors of reactor aerosols (e.g. graphite dust in HTGR) for nuclear
safety analysis, including aerosol transport and deposition in the primary
circuit and containment. Using advanced experimental techniques and new
numerical tools to investigate fundamental particle dynamics, especially the
effect of non-spherical shape and complex environment (turbulence, temperature
gradient, water vapor etc.). Recent work includes FEM modelling and experimental
study of adhesive particle-wall collisions, which are crucial for the models of
critical adhesion velocity and restitution coefficient.
Optical diagnostics of reactive gas-particle flows
Developing
new optical diagnostics techniques for reactive gas-particle flows, e.g.
Phase-selective Laser-induced Breakdown Spectroscopy (PS-LIBS). PS-LIBS is a
newly discovered laser diagnostics technique that uses the gap between the
breakdown thresholds of gas and particles for tracing gas-to-particle transition
in reactive flows. We uses PS-LIBS to investigate the formation of fine
particles and subsequent transport in the flow.
Gas-phase synthesis of nano-materials for energy and power
applications
Using
high temperature reactive flows (e.g. flame or plasma) to syntheize
nano-materials for energy and power applications, especially Ti-based energy
materials and Y-based optical materials. Exploring nanoparticle formation
(gas-to-particle transition), growth (collision & coalescence, surface
growth) and deposition (thermophoresis & diffusion) in high temperature
flows by both experiments and modelling. The principle target is to understand
the key factors that control morphology, structure and property of synthesized
nanoparticles and nano-films, to achieve desirable performance.
Research Status
2019
-2021, China
National Nuclear Corporation (CNNC)
Modelling
of aerosol behaviors in the containment
Exploring
and modelling of complex aerosol behaviors in the reactor containment during
severe accidents. Studying the settling of non-spherical particles and
aggregates, and the effect of vapor. Investigating the thermophoresis and
diffusiophoresis of non-spherical and aggregated particles. Studying the effect
of vapor on particle re-suspension. Building models for predicting the removal
rate of nuclear aerosol in the containment.
2018-2021, National
Science Foundation of China (NSFC)
The
transport of graphite dust in HTGR steam generator tube bundles and coupling
with fission products
Exploring
the underlying physics that controls the deposition of graphite dust on SG
tubes. Investigating the effects of flow structures on particle deposition
including particle-vortex interaction, near-wall fluctuations and boundary layer
profiles. At particle scale, the critical adhesion velocity will be studied by
both single particle impaction experiments and FEM/DEM simulation. By combining
these two parts we hope to establish reliable quantitative models to describe
graphite dust deposition and coupling with fission product transport in
HTGRs.
2019-2021,
Ministry
of Science and Technology
Research
and development of helium valves for HTGR
R&D
of ultra-low leaking rate helium globe and ball valves for HTGR primary circuit.
Cooperating with several valve companies to investigate the mechanism and
sealing design for ultra-low leaking rate of helium. Studying the effect of
foreign particles on valve performance.
2015-2017,
National
Science Foundation of China (NSFC)
Experimental
and theoretical study on phase-selective laser-induced breakdown spectroscopy
(PS-LIBS) for in-situ diagnostics of flame synthesis
To
uncover the mechanism of PS-LIBS, investigating the creation of initial free
electrons, the melting and vaporization of nanoparticles and dynamics of
nano-sized plasmas. Based on the framework of Fokker-Planck equation, a
quantitative model was built to solve the time-resolved energy distribution of
free electrons and explain the mechanism of PS-LIBS.
Honors And Awards
Springer
thesis award, 2014
Top ten
young academic stars, Tsinghua University, 2013
First
prize for excellent PhD thesis, Tsinghua University, 2013
Graduation
with honor, Tsinghua University, 2008
Academic Achievement
Publications
Yiyang
Zhang*, Zhu Fang, Shumiao Zhao, Mingzhe Wei, Xinxin Wu, Libin Sun. An
experimental study on the wall collision of micro-sized graphite particles by
high-speed photomicrography. PROGRESS IN NUCLEAR ENERGY, 2020,
125:103391.
Yihua
Ren, Yiyang Zhang, Shuiqing Li. Simultaneous Single-Shot Two-Dimensional Imaging
of Nanoparticles and Radicals in Turbulent Reactive Flows. PHYSICAL REVIEW
APPLIED, 2020, 13: 044002.
Zhu
Fang, Yiyang Zhang*, Mingzhe Wei, Shumiao Zhao, Libin Sun, Xinxin Wu. The
critical sticking velocity of non-spherical graphite particles: A numerical
study and validation .NUCLEAR ENGINEERING AND DESIGN, 2020, 359:
110453.
Zhu
Fang, Yiyang Zhang*, Mingzhe Wei, Shumiao Zhao, Xinxin Wu, Sun Libin. A
numerical study on adhesive collision between a micro-sized particle and a wall.
POWDER TECHNOLOGY, 2020, 360: 769-779.
Zhu
Fang, Hongtao Wang, Yiyang Zhang*, Mingzhe Wei, Xinxin Wu, Sun Libin. A finite
element method (FEM) study on adhesive particle-wall normal collision .JOURNAL
OF AEROSOL SCIENCE, 2019, 134: 80-94.
Weikai
Gao, Jiaqing Zhao, Xiaowei Li, Houjian Zhao, Yiyang Zhang, Xinxin Wu. Heat
transfer characteristics of carbon dioxide cross flow over tube bundles at
supercritical pressures .APPLIED THERMAL ENGINEERING, 2019, 158: UNSP
113786.
Mingzhe
Wei, Yiyang Zhang*, Zhu Fang, Xinxin Wu, Libin Sun. Graphite aerosol release to
the containment in a water ingress accident of high temperature gas-cooled
reactor (HTGR) .NUCLEAR ENGINEERING AND DESIGN, 2019, 342: 170-175.
Yihua
Ren, Yiyang Zhang, Shuiqing Li.. Single-shot two-dimensional measurement of
nanoparticles in turbulent jet-diffusion flames using phase-selective
laser-induced breakdown spectroscopy .PROCEEDINGS OF THE COMBUSTION INSTITUTE,
2019, 37: 1373-1381.
Mingzhe
Wei, Yiyang Zhang*, Xinxin Wu, Libin Sun. A parametric study of graphite dust
deposition on high-temperature gas-cooled reactor (HTGR) steam generator tube
bundles .ANNALS OF NUCLEAR ENERGY, 2019, 123: 135-144.
Qian
Huang, Yiyang Zhang, Qiang Yao, Shuiqing Li. Mineral manipulation of Zhundong
lignite towards fouling mitigation in a down-fired combustor. Fuel, 2018, 232:
519-529.
Runru
Zhu, Yiyang Zhang*, Ye Yuan, Shuiqing Li. Deposition Loss of Particles in the
Sampling Lines of continuous Emission Monitoring System (CEMS) in Coal-fired
Power Plants .AEROSOL AND AIR QUALITY RESEARCH, 2018, 18: 1483-1492.
Mingzhe
Wei, Yiyang Zhang*, Xiaowei Luo, Xiaowei Li, Xinxin Wu, Zhengming Zhang.
Graphite dust deposition on HTGR steam generator: Effects of particle-wall and
particle-vortex interactions .NUCLEAR ENGINEERING AND DESIGN, 2018, 330:
217-224.
Qian
Huang, Yiyang Zhang, Qiang Yao, Shuiqing Li. Numerical and experimental study on
the deposition of fine particulate matter during the combustion of pulverized
lignite coal in a 25 kW combustor .POWDER TECHNOLOGY, 2017, 317:
449-457.
Yiyang
Zhang*, Zihao Wang, Xinxin Wu, Libin Sun, Zhengming Zhang, Huiting Zhang,
Shuiqing Li. In situ laser diagnostics of nanoparticle transport across
stagnation plane in a counterflow flame .JOURNAL OF AEROSOL SCIENCE, 2017, 105:
145-150.
Yihua
Ren, Shuiqing Li, Wei Cui, Yiyang Zhang, Lin Ma. Low-frequency AC electric
field induced thermoacoustic oscillation of a premixed stagnation flame
.COMBUSTION AND FLAME, 2016, 176: 479-488.
Gang
Xiong, Shuiqing Li, Yiyang Zhang, Steven Buckley, Stephen Tse. Phase-selective
laser-induced breakdown spectroscopy of metal-oxide nanoparticle aerosols with
secondary resonant excitation during flame synthesis .JOURNAL OF ANALYTICAL
ATOMIC SPECTROMETRY, 2016, 31: 482-491.
Qi Gao,
Shuiqing Li, Ye Yuan, Yiyang Zhang, Qiang Yao.. Ultrafine particulate matter
formation in the early stage of pulverized coal combustion of high-sodium
lignite .FUEL, 2015, 158: 224-231.
Yihua
Ren, Shuiqing Li, Yiyang Zhang, Stephen Tse, Marshall Long.
Absorption-Ablation-Excitation Mechanism of Laser-Cluster Interactions in a
Nanoaerosol System .PHYSICAL REVIEW LETTERS, 2015, 114: 093401.
Yihua
Ren, Yiyang Zhang, Shuiqing Li, Chung K. Law. Doping mechanism of
Vanadia/Titania nanoparticles in flame synthesis by a novel optical spectroscopy
technique .PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35:
2283-2289.
Yiyang
Zhang, Shuiqing Li, Yihua Ren, Qiang Yao, Stephen Tse. A new diagnostic for
volume fraction measurement of metal-oxide nanoparticles in flames using
phase-selective laser-induced breakdown spectroscopy .PROCEEDINGS OF THE
COMBUSTION INSTITUTE, 2015, 35: 3681-3688.
Yiyang
Zhang, Shuiqing Li, Yihua Ren, Qiang Yao, Chung K. Law. Two-dimensional imaging
of gas-to-particle transition in flames by laser-induced nanoplasmas. APPLIED
PHYSICS LETTERS, 2014, 104: 023115.
Yiyang
Zhang, Gang Xiong, Shuiqing Li, Zhizhong Dong, Steven Buckley, Stephen Tse.
Novel low-intensity phase-selective laser-induced breakdown spectroscopy of TiO2
nanoparticle aerosols during flame synthesis .COMBUSTION AND FLAME, 2013, 160:
725-733.
Yiyang
Zhang, Shuiqing Li, Wen Yan, Qiang Yao. Nanoparticle transport and deposition in
boundary layer of stagnation-point premixed flames. POWDER TECHNOLOGY, 2012,
227: 24-34.
Yiyang
Zhang, Shuiqing Li, Wen Yan, Stephen Tse. Effect of size-dependent grain
structures on the dynamics of nanoparticle coalescence. JOURNAL OF APPLIED
PHYSICS, 2012, 112: 124321.
Yiyang
Zhang, Shuiqing Li, Sili Deng, Qiang Yao, Stephen Tse. Direct synthesis of
nanostructured TiO2 films with controlled morphologies by stagnation swirl
flames .JOURNAL OF AEROSOL SCIENCE, 2012, 44: 71-82.
Yiyang
Zhang, Shuiqing Li, Wen Yan, Qiang Yao, Stephen Tse.. Role of dipole-dipole
interaction on enhancing Brownian coagulation of charge-neutral nanoparticles in
the free molecular regime .JOURNAL OF CHEMICAL PHYSICS, 2011, 134:
084501.
Wen
Yan, Shuiqing Li, Yiyang Zhang, Qiang Yao, Stephen Tse.. Effects of Dipole
Moment and Temperature on the Interaction Dynamics of Titania Nanoparticles
during Agglomeration .JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114:
10755-10760.
Patents
System
for synthesizing nanoparticles through swirl stagnation flame
Methods
for excitation-intensity-dependent phase-selective laser-induced breakdown
spectroscopy of nanoparticles and applications thereof
Last Updated:2020-10-06
