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YI LIU
STEVEN
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[email protected]
yliu.io
stevenliuyi
EDUCATION
University of Notre Dame
Notre Dame, IN
Ph.D. Candidate in Aerospace & Mechanical Engineering
2016 - Present
computational fluid dynamicsturbulencehigh-performance computingaeroacoustics
  • GPA: 4.0/4.0
Syracuse University
Syracuse, NY
M.S. in Mechanical & Aerospace Engineering
2013 - 2015
turbulencedynamical systemgeophysical fluid dynamicshigh-throughput computingGPU computing
  • GPA: 4.0/4.0
Tongji University
Shanghai, China
B.S. in Automotive Engineering
2007 - 2012
transportation designautomotive aerodynamicsartificial neural network
  • GPA: 86.21/100
Visiting student in Industrial Design at College of Architecture and Urban Planning
2007 - 2009
    EXPERIENCE
    Research Assistant at Institute for Flow Physics and Control, University of Notre Dame
    2016 - Present
    Research Assistant at Green Fluid Dynamics Lab, Syracuse University
    2014 - 2016
    Computer Programmer at Core Infrastructure Services, Syracuse University
    2015 - 2016
    • Assisted researchers in Department of Biology by performing bioinformatics programming on OrangeGrid (a high-throughput computing environment on campus) for evolutionary biology researches.
    SELECTED RESEARCH PROJECTS
    High-Reynolds-number turbulent boundary layer flow over a forward step
    2021 - Present
    • Perform wall-modeled large-eddy simulations (WMLES) to investigate the turbulent boundary-layer flow over a small forward-facing step, with a focus on the effect of the step on wall-pressure fluctuations.
    Wall-pressure fluctuations in compressible turbulent wall-bounded flows
    2017 - Present
    • Perform direct numerical simulations (DNS) to investigate spatiotemporal characteristics of unsteady wall pressure in compressible turbulent channel flows and boundary-layer flows.
    • Participate in the development of an in-house compressible DNS solver with high-order non-dissipative finite difference scheme
    Lagrangian coherent structures (LCS) in the Gulf Stream
    2014 - 2018
    • Developed programs to calculate the finite-time Lyapunov exponent (FTLE) and Lagrangian-averagedvorticity deviation (LAVD) to find LCS in the Gulf Stream region using altimeter data.
    • Investigated the transport and mixing properties of the meandering jet and vortices, and the topological changesassociated with the structures.
    • Code available at https://github.com/stevenliuyi/ocean-ftle.
    Three dimensional LCS in a turbulent channel flow
    2014 – 2016
    • Computed 3D FTLE fields of the direct numerical simulation (DNS) results of a turbulent channel flow to investigate the 3D coherent structures.
    • Adopted high-throughput computing (HTC) technique to speed up 3D calculations.
    • Code available at https://github.com/stevenliuyi/3d-ftle.
    GPU programming in CFD simulations
    2015
    • Compared GPU parallel (OpenCL framework) and CPU sequential computing in CFD simulations.
    • Developed CFD codes to capture shock-waves and tested for two cases (a shock-tube flow simulation and a transonic nozzle flow simulation).
    • Code available at https://github.com/stevenliuyi/gpu-cfd.
    Aerodynamics of electric vehicles based on CFD and neural network
    2012
    • Combined artificial neural network, genetic algorithm and CFD simulation to develop a novel method to improve aerodynamics performance in the automobile design process.
    SELECTED GRADUATE COURSES
    Fluid Physics — Fluid DynamicsComputational Fluid DynamicsTurbomachineryContinuum MechanicsAdvanced AerodynamicsTurbulenceViscous FlowAeroacousticsHydrodynamic stabilityAdvanced Continuum Mechanics
    Applied Math/Computer Science — Statistical Methods in Data MiningDesign & Analysis of AlgorithmsMethods of AnalysisNumerical MethodsMathematical MethodsAdvanced Scientific ComputingUncertainty QuantificationApplied Partial Differential EquationsAdvanced Topics in Machine LearningDeep Learning with Graphs
    TEACHING EXPERIENCE
    Teaching Assistant at University of Notre Dame
    2016 - 2020
    • AME34334 Heat Transfer (Spring 2020)
    • AME20222 Mechanics II (Spring 2019)
    • AME20214 Introduction to Engineering Computing (Fall 2018, Fall 2019)
    • AME30363 Design of Machine Elements (Spring 2018)
    • AME30331 Fluid Mechanics (Fall 2016, Fall 2017)
    • AME20231 Thermodynamics (Spring 2017)
    Teaching Assistant at Syracuse University
    2014
    • MAE585 Principle of Turbomachines (Fall 2014)
    PUBLICATIONS
    Hai Lan, Dexuan Sha, Anusha Srirenganathan Malarvizhi, Yi Liu, Yun Li, Nadine Meister, ... Chaowei Phil Yang (2021). COVID-Scraper: An Open-Source Toolset for Automatically Scraping and Processing Global Multi-Scale Spatiotemporal COVID-19 Records. IEEE Access, 9, 84783-84798.
    Dexuan Sha, Yi Liu, Qian Liu, Yun Li, Yifei Tian, Fayez Beaini, ... Chaowei Yang (2021). A Spatiotemporal Data Collection of Viral Cases for COVID-19 Rapid Response. Big Earth Data, 5(1), 90-111.
    Yi Liu , Melissa Green, Chris Wilson, Chris Hughes (2018). Gulf Stream Transport and Mixing Processes via Coherent Structure Dynamics. Journal of Geophysical Research: Oceans, 123(4), 3014-3037.
    PRESENTATIONS & ABSTRACTS
    Meng Wang, Yi Liu, Kan Wang. Wall-Pressure Fluctuations in Weakly Compressible Turbulent Channel Flow. 185th Meeting of the Acoustical Society of America, Sydney, Australia. 4-8 Dec 2023.
    Yi Liu, Kan Wang, Meng Wang. Subconvective Characteristics of Wall-Pressure Fluctuations in Low-Mach-Number Turbulent Channel Flow. 76th Annual Meeting of the American Physical Society's Division of Fluid Dynamics, Washington, DC, USA. 19-21 Nov 2023.
    Di Zhou, Yi Liu, Meng Wang. Wall-Pressure Fluctuations in a High Reynolds Number Turbulent Boundary Layer Flow over a Forward Step. 75th Annual Meeting of the American Physical Society's Division of Fluid Dynamics, Indianapolis, IN, USA. 20-22 Nov 2022.
    Yi Liu, Kan Wang, Meng Wang. Wavenumber-frequency Spectra of Wall-Pressure Fluctuations in Compressible Turbulent Channel Flow. 72nd Annual Meeting of the American Physical Society's Division of Fluid Dynamics, Seattle, WA, USA. 23-26 Nov 2019.
    Yi Liu, Kan Wang, Meng Wang. Computation of Wall Pressure Fluctuations in Compressible Turbulent Channel Flows. 71st Annual Meeting of the American Physical Society's Division of Fluid Dynamics, Atlanta, GA, USA. 18-20 Nov 2018.
    Yi Liu, Chris Wilson, Melissa Green, Chris Hughes. Gulf Stream Transport and Mixing Processes via Lagrangian Coherent Structure Dynamics. 2018 Ocean Sciences Meeting, Portland, OR, USA. 11-16 Feb 2018.
    Chris Wilson, Yi Liu, Melissa Green, Chris Hughes. Gulf Stream Transport and Mixing Processes via Coherent Structure Dynamics. European Geosciences Union General Assembly 2017, Vienna, Austria. 23-28 April 2017.
    Chris Wilson, Yi Liu, Melissa Green, Chris Hughes. An Update to the “Barrier or Blender” Model of the Gulf Stream, Based on Lagrangian Analysis of Aviso Altimetry. 2016 Ocean Sciences Meeting, New Orleans, LA, USA. 21-26 Feb 2016.
    Yi Liu, Chris Wilson, Melissa Green, Chris Hughes. Lagrangian Coherent Structures in the Gulf Stream. 68th Annual Meeting of the American Physical Society's Division of Fluid Dynamics, Boston, MA, USA. 22-24 Nov 2015.
    HONORS & AWARDS
    WikiCite eScholarship, Alfred P. Sloan Foundation
    2020
    Graduate Student Professional Development Award, University of Notre Dame
    2019
    Outstanding Graduate Student of Mechanical & Aerospace Engineering, Syracuse University (For ranking first in the program)
    2015
    Graduate Student Scholarship, Syracuse University
    2013 - 2015
    Outstanding Student Scholarship, Tongji Unversity
    2008, 2009
    PEER REVIEW ACTIVITIES
    Computer Physics Communications