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Testimony by NASA’s Inspector General at a May 16 hearing provided new support to efforts by two senators to block plans to end funding of the International Space Station in 2025. SpaceNews.com
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A NASA advisory committee, concerned about delays in the development of commercial crew systems, wants the agency to look at options where the International Space Station is operated with a reduced crew. SpaceNews.com
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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:15-11-2012
     Last Modified:15-11-2012 (04:53)
    Job information
     Current job:Post-doc
     Employment Term:Either
     Job location:Anywhere
     Date available:immediately
     Industry:Launch Systems
     KeywordsPhD on Heat Transfer and Aerodynamics in Gas/Steam Turbine. Expertise on wind tunnel experiment and CFD analysis.
    CV

    Objective

    An engineering/research position in Aerodynamics/ Heat Transfer/ CFD/ Mechanical Design/ Thermal System

    Summary

    More than 4 years of experience in heat transfer and aerodynamic experiment in the transonic cascade wind tunnel. More than 3 years of experience in numerical simulation on the flow in turbomachines with commercial codes. Proficient on thermodynamic and aerodynamic experimental equipment and instrumentation. Experienced in CFD analysis of the internal flow. Experienced in mechanical design with CAD tools. Self-motivated researcher with excellent analytical and communication skills. Can work independently as well as a team player.

     

    Software skills:

    CFD software (ANSYS-Fluent, ANSYS-CFX, Numeca); mechanical design code (SolidWorks); data acquisition code (Labview); data processing codes (MATLAB, Mathematics, C++).

     

    Experiment instrumentation skills:

    Infrared camera on the surface heat transfer measurement; thin film platinum gages on the surface heat transfer measurement; hot-wire probe on turbulence intensity measurement; five hole pressure probe on cascade secondary flow determination.

    Research Experience

    Graduate Research Assistant: Transonic Wind Tunnel Lab at Virginia Tech (Blacksburg, VA)         

    May 2008 – Aug 2012

    Advisor: Dr. Wing Ng& Dr. Srinath Ekkad

    −        Experimental and numerical researchon heat transfer in turbine blade tip gap region, Jan 2011 – present. (sponsored by Solar Turbines Incorporated)

    Actions

     

    §  Mentor undergraduate student using SolidWorks (CAD software) to fabricate squealer tip blade 3D geometry, and to conduct the mechanical safety inspection;

    §  Guide Master degree candidate using infrared (IR) camera to record blade tip heat transfer data, and to reduce the data;

    §  Instrument Thin Film Platinum gages to measure near tip region heat transfer data. 

    §  Perform conjugate heat transfer simulation with CFD codes to analysis a thermal protection scheme in the turbine blade tip gap region. (ANSYS-Fluent was employed)

    Outputs

    §  The heat transfer characteristics on the turbine blade tip and the near tip region were mapped with the IR measurement data. The physics of the tip gap flow, and its effect on heat transfer were discussed. Different tip gap dimensions were compared at multiple main flow Mach numbers, and suggestions were proposed to protect the turbine blade tip from thermal damage.

    §  The sponsor (Solar Turbine Inc.) was satisfied with the first stage progress report, and decided to continuously support further research on tip gap flow with our lab.

    §  The results were summarized in the form of a conference paper, and were submitted to the international conference of TURBOEXPO2013.

     

    −        Experimental and CFD investigation on film-cooling performance on turbine blade and nozzle guide vane, Jan 2009 – Dec 2010. (sponsored by Solar Turbines Incorporated)

    Actions

     

    §  Design and set up film cooling test system in gas turbine linear cascade rig; conduct the heat transfer measurement; Processed the data reduction. (Labview codes were written for the DAQ process; Matlab codes were written for data reduction)

    §  Performed CFD study to investigate the detail physics on the shock/film cooling interaction. (ANSYS-CFX was employed)

    §  Performed Hot-wire probe measurement to determine the freestream turbulence intensity in the linear cascade test section.

    Outputs

    §  The heat transfer coefficient and film cooling effectiveness of a fan-shaped hole injected gas turbine blade was recorded for the first time under a unique flow condition. A novel phenomenon of shock/film cooling interaction was observed in the experiment, and the physics were explored in the numerical study. The suggestions were proposed to optimize the film cooling performance on a gas turbine blade.

    §  The sponsor (Solar Turbine Inc.) was satisfied with the final report, and assigned new research projects to our lab.

    §  A part of the research was summarized as a journal paper, which was accepted by the ASME Journal of Turbomachinery. Two other journal papers were submitted to the AIAA Journal of Propulsion. The experimental results were presented at the conference of TURBOEXPO in Jun 2011, and AIAA conference in Jan 2012.

     

    −        Determination of secondary flow aerodynamic loss in linear cascade of a high turning blade with divergent endwall , Sep 2008 – May 2009. (sponsored by Siemens)

    Actions

     

    §  Designed a five-hole pressure probe for supersonic measurement. (Flow strength estimation/safety check was done both manually and using SolidWorks for special test conditions)

    §  Conducted the five-hole pressure probe measurement and data reduction for the total pressure loss determination. (3D interpolation method was coded in Matlab to reduce the pressure data based on the calibration data)

    §  Designed step motor driving traverse mechanism for the probe moving in the test section to perform multiple location data acquisition.

    Outputs

    §  The pressure loss caused by the secondary flow at the exit of a gas turbine blade cascade was determined into a 2-D contour map. The result was used to optimize the geometry of the endwall contour in a gas turbine blade cascade.

    §   The sponsor (Siemens) was satisfied with the progress report, and decided to continuously support further research.

    §  The results were presented at the conference of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting.

     

     

    Graduate Research Assistant: Solar Energy Lab in Chinese Academy of Science (Beijing, China)

    Apr 2006 – Apr 2007

    Advisor: Dr. Zhifeng Wang                                                                 

    −        Experimental and numerical investigations of wind effect in the heliostats field of a solar tower plant (supported by Natural Science Foundation of China)

    Actions

     

    §  Performed CFD investigation on the wind flow in a heliostats field. (Phoenix code was employed in CFD study)

    §  Assist the wind tunnel experiment to measure the pressure distribution on the heliostat surface.

    Outputs

    §  Literature research of the wind effect on the heliostats was finished. The preliminary CFD study was carried out.

    §  Wind tunnel experiment was done. The pressure distribution on the heliostats front and back surface was recorded at different attacking angles and different wind speeds.

    §  The principal advisor/manager was convinced to cancel the further research project of the wind effect on heliostats.

     

     

    Graduate Research Assistant: School of Jet Propulsion in Beijing University of Aeronautics and Astronautics (Beijing, China)                                                                                                 

    Jun 2003 – Apr 2006

    Advisor: Dr. Xingmin Gui                                                                 

    −        Designed and conducted CFD simulation of mini size rotary pump for artificial heart or left ventricular assist device, Aug 2003 - Apr 2006. (collaborated with Fuwai Hospital)

    Actions

     

    §  Performed CFD inspection on the mini size rotary pump for artificial heart or left ventricular assist device; designed and improved the rotor blade and the stator vane profiles; developed a 2-D through flow code as a tool for the blade profile design. (The commercial CFD codes, Numeca, was employed)

    §  Invented the outer bearing rotary pump for low hemolysis artificial heart. (The bearing was designed at the outside of the rotor for better powering, improved cooling and lubricating conditions, and eliminating tip gap flow)

    Outputs

    §  The original design of a blood pump for the artificial heart was improved based on the result of the numerical investigation.

    §  A patent was awarded for the novel design of the blood pump to minimize the hemolysis, manufacture cost, and maintenance complication.

    §  The progress report in the form of a proposal convinced the National Natural Science Foundation of China to support further research.

    §  The research was published as a technical paper in the journal of Artificial Organs in 2007.

     

    Teaching Experience

    Instructor: Course of Engineering Design and Economics, at Virginia Tech (Blacksburg, VA)        

    Aug 2011 – Dec 2011

    −        Lecture a class of 30 students (sophomore level)

    −        Topics include product design&engineering economics

    Education

    Virginia Polytechnic Institute and State University (Blacksburg, Virginia)

    Ph.D. Candidate in Mechanical Engineering      
    Total GPA: 3.81/4.0

    Dissertation: Fan-Shaped Hole Film Cooling on Turbine Blade and Vane in a Transonic Cascade with High Freestream Turbulence

     

     Aug 2012

     

    Beijing University of Aeronautics and Astronautics(Beijing, China)                        

    M.S. in Aerospace Propulsion Theory and Engineering 

    Thesis: Study and design on a low hemolysis axial blood pump

                                 

    Apr 2006

     

    Beijing University of Aeronautics and Astronautics(Beijing, China)                                     

    B.S. in Thermal Energy and Power Engineering

    Jun 2003

    Publications

    1.     S. Xue, W. Ng, H.K. Moon and L. Zhang. “Fan-Shaped Hole Film Cooling on Turbine Blade in a Transonic Cascade with High Freestream Turbulence,” 50th AIAA Aerospace Sciences Meeting, Nashville Tennessee, Jan 2012, AIAA-2012-0368.

     

    2.     S. Xue, A. Newman, W. Ng, H.K. Moon and L. Zhang. “Heat Transfer Performance of a Showerhead and Shaped Hole Film Cooled Vane at Transonic Conditions,” accepted by ASME Journal of Turbomachinery. (Presented asGT2011-45142 at the Turbo Expo 2011: Power for Land, Sea, and Ai)

     

    3.     S. Abraham, K. Panchal, S. Xue, S. V. Ekkad, W. Ng, B. J. Brown, A. Malandra. “Experimental And Numerical Investigations of A Transonic, High Turning Turbine Cascade with A Divergent Endwall,” Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels and Minichannels, FEDSM2010-ICNMM2010.

     

    4.     Y. Zhang, S. Xue, X. Gui, H. Sun, H. Zhang, X. Zhu, and S. Hu. “A Novel Integrated Rotor of Axial Blood Flow Pump Designed With Computational Fluid Dynamics,” Artificial Organs, 2007, Vol. 31, pp. 580-585.

     

    5.     S. Xue, W. Ng, S. V. Ekkad, “Shock effect on fan-shaped film cooled gas turbine blade suction side: CFD and comparison with experiment”. (in preparation for a journal submission)

     

    6.     K. Anto, S. Xue, W.F. Ng, L.J. Zhang, H.K. Moon, “Effects of Tip Clearance Gap and Exit Mach Number on Turbine Blade Tip and Near-Tip Heat Transfer”. (submitted to the ASME Turbo Expo 2013)

     

    7.     Chinese Patent: CN1958085 2007-05-09

    Title: Outer bearing type artificial heart blood pump

    Inventor: Song Xue, Yan Zhang, Xingmin Gui et al.

    Appl. No.: 200610002894.3

    Filed: Feb 10, 2006

    Field of Search: A61M1/10(2006.01)I

    Major Courses

     

    −        Fluid Dynamics

    −        Advanced Instrumentation

    −        Turbomachinery

    −        Modeling MEMS & NEMS

    −        Computational Fluid Dynamics

    −        Math of Mechanic Engineering Analysis

    −        Convective Heat& Mass Transfer

    −        Heat Conduction



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