Experience

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  University of michigan

  May 2007 - Dec 2008

  Graduate research assistant

  • Development of an Analytic Model for a Thermal Ground Plate Design(In collaboration with DARPA, University of California Los Angeles and Advanced Cooling Technologies Inc., U. S. A)I developed an analytic model for a thermal ground plate, used to maximize heat transfer efficiency. Inside the thermal ground plate were multiple liquid arteries forming a columnar vapor chamber for effective heat removal from a finite, concentrated heat source by heat spreading via lateral vapor flow. I optimized the geometric parameters of the thermal ground plate using a three-dimensional resistance network analysis, modeling heat and fluid flow. The optimized geometric parameters for columns and wick structures were fabricated and tested at UCLA. • Experimental Study of Pool-Boiling on a Sintered Copper Powder Wick(In collaboration with Virginia Commonwealth University, U. S. A)I conducted pool boiling experiments on sintered copper powder wicks with different geometries and porosities fabricated by Prof. M. Koc from Virginia Commonwealth University. I took scanning electron microscope images to measure the stack height, pitch and base thickness of coatings and performed pool-boiling experiments with different wick structures to compare the heat transfer efficiency.• Optimization of the Heat Sink Design and Modelling of Transient Response of an Infrared Temperature Sensor for an Ear Thermometer(In collaboration with Dexter Research Center, MI, U. S. A)I helped Dexter research center to develop the heat sink design for an ear thermometer and infrared temperature sensor. I made 3-D models of the ear thermometer design proposed by Dexter research center and analyzed the transient heat response of the 3-D model using COMSOL software. Show less

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  University of illinois urbana-champaign

  Jan 2012 - Aug 2022

  In my role as a research engineer. I am responsible for conducting CFD simulation for assisting enhancement of the washing efficacy of fresh-cut leafy produces to prevent food-borne illness. In collaboration with M.I.T, and the United States Department of Agriculture, I conduct the spectral element computations of unsteady convective mass transfer to simulate how the contaminant/organic exudate residing behind the fresh-cut leafy produce washed away. Using my experimental data on the viscosity measurement of aqueous sodium gluconate (major components of the organic exudate as a six-carbon sugar), I implemented the empirical function of mass fraction and temperature to the code and encountered the variable viscosity in the computation. In addition, as a continuation of my previous collaboration with food science and human nutrition at UIUC funded by DOE Rapid Advancement in Process Intensification Deployment, I conduct experiments on the use of power ultrasound to atomize aqueous solutions of ethanol, with the resulting droplets being enriched in ethanol in the process of producing fuel-quality bioethanol from fermentation broth. Show less I have lots of experience with Spectral Element Method. I use Nek5000, production code developed and supported by Argonne National Laboratory. I did 3D LES turbulent computation and convection-diffusion computations. In collaboration with Georgia Institute of Technology, National Renewable Energy Laboratory, University of Texas Austin, and United Technologies Research Cooperation funded by the Advanced Research Projects Agency-Energy (DOE), I analyzed experimental data from Georgia Tech and performed the three-dimensional turbulent computations using an open-source, massively parallel spectral element code, Nek5000, accounting for thermally driven buoyant motion, coupled with a crosswind to assist the development of renewable power generation using solar-heated ground air. I worked on flows with reaction, convection, and diffusion with bimolecular kinetics for developing an analytic model for improving the washing efficacy of fresh-cut leafy produces in collaboration with M.I.T. and USDA. Since Jan. 2021, I assist the development of the ultrasound-mediated ethanol separation system to collect high-purity ethanol (over 99% purity for the fuel quality) and implemented a data acquisition system in collaboration with food science and human nutrition at UIUC. Show less

  • Research Engineer

    Jan 2022 - Aug 2022

  • Postdoctoral Research Associate

    May 2013 - Feb 2022

  • Graduate Research Assistant

    Jun 2009 - May 2013

  • Graduate Teaching Assistant

    Jan 2012 - May 2012
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  Amogy

  Aug 2023 - now

  Cfd engineer