CFD R&D Engineer

JIUAN WEI

*** **** ***, *** **

Nesconset, NY *1767 Tel.: 631-***-**** (M)

Email: ********@*****.***

OBJECTIVE

Seeking a full-time position as a research & development Computational Fluid Dynamics (CFD) engineer/analyst/scientist related to fluid mechanics, heat transfer, chemical reaction, crystal growth, CFD, stress analysis in solar application industries.

QUALIFICATIONS

 Strong research backgrounds in fluid mechanics, thermal and material science.

 Extensive experience in CFD modeling using software ANSYS FLUENT; proficient in geometry generation tools such as Design Modeler and a variety of meshing methods (Gambit, CFX-Meshing, Sweep method, Multizone method, etc).

 4-year experience of using software CFD-ACE, pre-processor CFD-GEOM and post-processor CFD-VIEW.

 Strong knowledge of numerical algorithms, Finite Volume Methods (FVM), Finite Difference Methods (FDM), Finite Element Methods (FEM), grid-free method of Smoothed Particle Hydrodynamics (SPH).

 Wide exploration in simulations of chemically reacting flow, multiphase, multiscale, multicomponent flow and heat transfer.

 Experience in 2D and 3D model design with Autodesk Inventor.

EDUCATION

9/05 – 5/09 Department of Mechanical Engineering, SUNY Stony Brook, Ph.D.

Dissertation: Modeling of multiphase flow with solidification and chemical reaction in materials processing

9/02 – 7/05 Institute of Mechanics, Chinese Academy of Sciences (CAS), China; M.S. in Science

Thesis: Molecular dynamics simulation of liquid and its contact phenomenon with solid substrate

9/97 – 7/02 University of Science and Technology of China, B.S. in Mechanical Engineering

WORKING EXPERIENCE

CFD Modeling of Next Generation Chemical Vapor Deposition (CVD) Reactor Designs for Solar and Energy Saving Applications, CVD Equipment Corporation, NY (01/2009 – now)

• Developed 3D numerical models to simulate gas flow, heat transfer and species transport for CVD reactor using commercial software ANSYS Fluent;

• Established complicated gas phase and surface reaction mechanism for APCVD processes to produce silicon, silicon dioxide, TCO, etc;

• Proposed system modifications to improve reactor design and optimize operating conditions to achieve better efficiency and uniformity of deposition.

RESEARCH ACTIVITIES

Modeling and Design of Directional Solidification System (DSS) for Poly-silicon Manufacturing, sponsored by NSF, (01/2008 – 12/2008)

• Developed a 2D system model for DSS furnace and simulated heat transfer and solidification process using commercial software CFDRC-ACE;

• Analyzed energy efficiency in the production system and investigated the effects of heating power and the position of side insulation layer on the solidification interface position/shape;

• Proposed a hot zone design by adding a radiation partition in between the heater and cooling area to save the energy by 30% and improve the crystal quality; Also proposed an easy method to detect solidification interface shape;

Simulation and Design of III-V and II-VI Single Crystal Growth by Bridgman Technique sponsored by Air Force SBIR Program through EIC Laboratories, Inc., MA. (05/2006 – 12/2007)

• Developed comprehensive numerical models to simulate melt flow field and temperature distribution in the crystal growth system for InAs, GaP, InSb, ZnTe, CdTe, ZnTe, GaSe, GaSb and GaTe;

• Investigated process parameters (Prandtl, Grashof, Rayleigh, Stefan and Biot numbers) and their impacts on thermal and velocity fields as well as solidification interface shape on the quality of grown crystals and identified key process controlling parameters for the growth of the aforementioned III-V and II-VI crystals;

• Established a process map based on Prandtl and Grashof numbers to enable the optimal selection of growth operating conditions for the given III-V and II-VI crystals using Bridgman technique;

• Proposed a novel Bridgman based growth system for CdTe by optimally design of heat zone that can control natural convection and stabilize the solidification process for large diameter crystal growth.

Optimization and Design of Edge-defined Film-fed Growth (EFG) System for Poly-Silicon Manufacturing, sponsored by RWE Inc, MA. (10/2006 – 04/2007)

• Developed 3D system model for the RF heating EFG furnace and implemented into the in-house built code as well as the commercial CFDRC-ACE software;

• Conducted comprehensive investigation of inductive heating, radiation and thermal distribution in the system in order to optimize the hot zone design;

• Proposed various design approaches to improve the temperature uniformity in the circular direction of furnace to ensure a high quality wafer growth.

Modeling and Design of Polymer Pyrolysis and Synthesis of Uranium-Ceramic Nuclear, sponsored by DOE and NSF (12/2006 – 12/2007)

• Developed high-temperature refractory ceramic fuels, in-core materials, and control elements applicable to Gas-Cooled Fast Reactors;

• Conducted a system-level model to describe polymer pyrolysis and uranium ceramic material processing, including heat transfer, polymer pyrolysis, SiC crystallization, chemical reactions, and volatiles transport;

• Proposed a mesoscopic particle level model to study the structure and species evolution at the local level. This model describes the synthesis of SiC matrix and uranium oxide particles in a micro-unit based on the smoothed particle hydrodynamics (SPH) method.

COMPUTATIONAL SKILLS

• Commercial Software: Proficiency in using computational fluid mechanics packages such as CFDRC, FLUENT, and ANSYS; pre- and post-data processing software such as Inventor, Auto CAD, Tecplot, Origin, and Matlab; and text editor software such as Microsoft Office Suite.

• Programming skill: proficiency in program language such as Fortran, C, and C++

• Computational code development: Modified in-house built MASTRAPP for semiconductor growth of III-V and II-VI crystals in Bridgman system; developed a meshless based computational code (SPH) for multiscale, multiphysics materials processing problems.

• Computer: Administrating Linux workstations and other windows and doc based PC computers.

PUBLICATIONS

1. J. Wei, H. Zhang, L. L. Zheng, C. L. Wang, B. Zhao, “Modeling and Improvement of Silicon Ingot Directional Solidification for Industrial Production Systems”, Solar Energy Materials and Solar Cells, 2009, 93(9), p1531-1539.

2. J. Wei, L.L. Zheng, H. Zhang, “Suppression of Melt Convection in a Proposed Bridgman Crystal Growth System”, International Journal of Heat and Mass Transfer, 2009, 52(15-16), p3747-3756.

3. J. Wei, W. Zhang, T. Salagaj, K. Strobl, “Parametric CFD Optimization of an APCVD TCO Deposition Module”, MRS Fall Meeting, November 30-December 4, 2009, Boston, MA.

4. J. Wei, H. Zhang, L. L. Zheng, C. L. Wang, “Hot Zone Design Optimization in an Industrial Silicon Ingot Production System”, Proceeding of 7th International Symposium on Heat Transfer, October 26-29, 2008, Beijing, China.

5. J. Wei, L. L. Zheng, H. Zhang, “Growth of Different Crystals Using a Modified Bridgman System”, Proceeding of 2007 ASME Int. Mech. Engng. Congress and Exposition, IMECE2007-41631, Seattle, November 11-15, 2007, Seattle, Washington.

6. J. Wei, L.L. Zheng, K. C. Mandal, M. Choi, S.H. Kang, “A New Design to Suppress Melt Convection in Bridgman Crystal Growth”, 15th Int. Conf. on Crystal Growth, Poster, August 12-17, 2007, Salt Lake City, Utah.

7. W. Zhang, T. Salagaj, J. Wei, C. Jensen, K. Strobl, “Comparison of APCVD to LPCVD Processes in the Manufacturing of ZnO TCO for Solar Applications”, MRS Fall Meeting, November 30-December 4, 2009, Boston, MA.

8. H. S. Fang, K. Bao, J. Wei, H. Zhang, E. H. Wu, L. L. Zheng, “Simulations of Droplet Spreading and Solidification Using an Improved SPH Model”, Numerical Heat Transfer, Part A: Application, 2009, 52(2), 124-143.

9. X. Wang, L. L. Zheng, H. Zhang, J. Wei, “Development of a Mesoscopic Particle Model for Synthesis of Uranium-Ceramic Nuclear Fuel”, International Journal of Heat and Mass Transfer, 52(21-22), 5141-5151.

10. Q. W. Yang, R. Z. Zhu, J. Wei, Y. H. Wen, “Surface-Induced Melting of metal Nanoclusters”, Chinese Phys. Letts. 2004, 21(11), 2171-2174

11. M. Y. Zhang, H. Zhang, L. L. Zheng, H. S. Fang, J. Wei, “ Impinging and Penetration of Liquid Droplets on Porous Substrates Using Smoothed Particle Hydrodynamics Meshless Method”, (submitted).

12. K. C. Mandal, S. H. Kang, M. Choi, J. Bello, J. Wei, L.L. Zheng, H. Zhang, G.E. Jellison, M. Groza, A. Burger, “Component Overpressure Growth and Characterization of High Resistivity CdTe Crystals for Radiation Detectors”, J. Electron. Mater., in press (2007).

13. K. C. Mandal, M. Choi, S.H. Kang, R.D. Rauh, J. Wei, H. Zhang, L. L. Zheng, Y. Cui, M. Groza, A. Burger, “GaSe and GaTe anisotropic layered semiconductors for radiation detectors”, Proc. SPIE, Vol. 6706, 2007.

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