Yi Li

Experience

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  University of Minnesota-Twin Cities

  Mar 2014 - May 2015

  Research Assistant

  Porous Media Pipe System for Pressure Data Measurements• Designed a porous media pipe flow test section filled with packed beads in certain sizes using Solidworks• Performed computational fluid dynamic analysis on test section and obtained pressure drop curve using ANSYS CFX• Designed and evaluated overall experimental plan, built and assembled test sections and made final choice on working fluid and flow rate conditions • Collected pressure drop data and obtained permeability of porous media using hydrostatic pressure gauges and pitot tube• Plotted pressure drop data versus flow rates using Excel and performed uncertainty analysis on collected data set• Compared numerical results to test data and the differences were in the range from 7% to 10%Capstone C30 Micro-Turbine Modification for Component Efficiency Measurements and Cogeneration Experiments• Performed evaluations on all design requirements and scheduled each step of research process• Performed thermodynamic analysis on pressure and temperature fields for inlet, combustion chamber and exhaust and made final decision on sensor selection• Analyzed and assessed each probe mounting plan and made final decision for probe mounting method• Allocated and installed all 13 sensors and transducers by assembling and disassembling the turbine system• Performed instantaneous pressure and temperature data monitoring tests on multiple points using Labview programming• Designed and modeled both cross flow and counter flow heat exchangers for exhaust gas using Solidworks • Assessed and determined the working fluid in heat exchanger by conducting thermodynamic analysis on heat exchangers• Performed CFD analysis on each exhaust heat exchanger using ANSYS CFX and Fluent, made the final decision on heat exchanger configuration and further refined the selected model with up to 90% thermal efficiency • Evaluated overall cost performance of each component and entire system and made final bill of material Show less

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  University of Pennsylvania

  Jan 2016 - May 2017

  Graduate Research Assistant

  Research Assistant in University of Pennsylvania February 2016 – May 2017Smart- Cup System for the HIV/HSR viruses diagnosing • Designed and modeled the PCM-based (phase change material) viruses diagnostic system using SolidWorks • Created and mathematically verified feasibility of user defined functions for PCMs’ thermal properties in FEA/CFD tools and further verified the convergence of simulation calculations• Performed computational fluid dynamic analysis for transient phase transition phenomena of multi-PCM model in regard to temperature and flow fields using Commercial CFD and FEA tools, Fluent and COMSOL, and further refined the design• Developed particular numerical model for phase change analysis using FVM and C#, computational time reduced by 60%• Made decision on final choice of materials by evaluating on PCMs’ thermal properties, design requirements • Built the prototype using mills, drills, 3D printing and laser cutting techniques • Designed and assembled experiment apparatus to test thermal functionality of prototype using Labview and thermocouples• Verified high reliability and applicability of the prototype at multiple operating temperatures ranged from 12℃ to 35℃• Built micro-fluidic test chip using laser cutting techniques and helped biology specialist perform virus detection tests• Utilized data analysis to graph the test results using Excel and Matlab and performed uncertainty tests on test data• Compared experimental data with numerical results and the difference was less than 5%. • Made the bill of material and estimated overall cost performance of entire system • By comparing to conventional viruses diagnostic system, this device provided highly accurate diagnosis, and it was minimally instrumented, could be used in source-limited area and operational cost has been reduced by 30 times. Show less

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  University Of Pennsyvania

  Aug 2016 - Dec 2016

  Graduate Research And Teaching Assistant

  Department of Mechanical Engineering and Applied ScienceDoctor Portonovo Ayyaswamy’s Heat and MassTransport Class• Graded weekly assigned homework for 14 students• Gave weekly recitations and office hours to help students improve problem solving skills

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  I-SEE Loyal Tech, Inc

  May 2017 - Sept 2017

  Intern Engineer

  Multiphase Flow Injector • Designed and modeled the device which merges air into water stream at certain flow rate conditions using PTC Creo• Validated and further improved model by conducting numerical analysis on CAD model using CFD tool, ANSYS Fluent• Built prototype using 3D printing techniques and reduced cost by 40%• Performed pressure data and flow rate tests on prototype and verified its functionality

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  Sanhua R&D Center

  Feb 2018 - now

  CFD simulation engineer