Curriculum Vitae

Yongkang Chen

Research Associate Telephone: (503)725-2826

Mechanical and Materials Engineering Fax: (503)725-8255

Portland State University E-mail: yongkang@cecs.pdx.edu

Portland, OR 97207-0751

Education:

Ph.D. in Fluid Mechanics: 2003

Purdue University, West Lafayette, IN

Dissertation: A Study of Capillary Flow in a Vane-Wall Gap in Zero-Gravity

Advisor: Steven Collicott, cumulative GPA: 3.91/4.0

M.S. in Aerodynamics: 1995

Beijing Institute of Aerodynamics, Beijing, China

Thesis: Study of Hypersonic Shock/Boundary Layer Interaction Flow around Circular Cylinders

B.S. in Flight Mechanics: 1992

Beijing University of Aeronautics and Astronautics, Beijing, China

Thesis: The Maneuverability and Stability of a High Performance Jet Fighter

Professional Experience:

Research Associate, August 2006 – present;

Post-Doctoral Fellow, August 2003 – July 2006

Department of Mechanical and Materials Engineering, Portland State University

Currently developing optimal porous structures with high performance surface wicking features for enhanced multiphase transport (NSF project); conducting experimental and analytical studies of capillary flows in complex geometries (NASA project); analyzing hand held Capillary Flow Experiments flown onboard the International Space Station (NASA project); conducting numerical investigations of shape and stability of capillary interfaces using the Surface Evolver algorithm.

Research Assistant, January 1998 – July 2003

Department of Aeronautics and Astronautics Engineering, Purdue University

Designed and built a 1.2 second high test rate drop tower for micro-gravity fluids science research, and conducted experimental studies of capillary flow in vane wall gap geometries, conducted low-gravity experimental fluid mechanics studies for the design of a rat urine collection system for future International Space Station animal habitat

Engineer, June 1995 – December 1997

Beijing Institute of Aerodynamics, Beijing, China

Performed research on super/hyper-sonic shock-wave/boundary layer interactions

Teaching/Mentoring Experience:

Lecturer, ME323 Heat Transfer, Spring 2006

Department of Mechanical and Materials Engineering, Portland State University

Guest Lecturer, ME410/510 Capillary Phenomena, Fall 2003, 2005, 2007

Department of Mechanical and Materials Engineering, Portland State University

Mentor, Summer 2004 – 2007

Apprenticeship in Science and Engineering, Portland State University

Advised high school students during summer research internships

Teaching Assistant, January 2000 – May 2003

Department of Aeronautics and Astronautics Engineering, Purdue University

Assisted professors with the instruction of undergraduate and graduate level courses in fluid mechanics, aerodynamics, low-gravity flight experimental design, and fabrication techniques

Publications in Refereed Journals:

Y Chen, D Bolleddula, R Jenson, M M Weislogel, J Klatte, “A computational study of super-hydrophobic surface”, Journal of Colloid and Interface Sciences, in preparation

Y Chen, D Bolleddula, M M Weislogel, “Capillary flow in cylindrical containers with rounded interior corners”, AIAA Journal, in preparation

Y Chen, D Bolleddula, R Jenson, M M Weislogel, J Klatte, “Wall-edge-bound drop and a method to measure contact angle”, Experiments in Fluids, in preparation

M M Weislogel, R M Jenson, Y Chen, S H Collicott, and S Williams, “Geometry Pumping on Spacecraft: The CFE-Vane Gap Experiments on ISS”, submitted for publication in the Japan Society of Microgravity Application Journal, JASMA,

M M Weislogel, Y Chen, D Bolleddula, “A better non-dimensionalization scheme for slender flows: the Laplacian operator scaling method”, Physics of Fluids, in review

Y Chen, M M Weislogel, C Nardin, “Capillary driven flows along rounded interior corners”, Journal of Fluid Mechanics, Vol. 566, pp 235-271, 2006

Y Chen, S H Collicott, “Study of wetting in an asymmetrical vane-wall gap in propellant tanks”, AIAA Journal, Vol. 44, No. 4, pp 859-867, 2006

Y Chen, M Bacich, C Nardin, A Sitorus, M M Weislogel, “The shape and stability of wall-bound and wall-edge-bound drops and bubbles”, Microgravity Science and Technology, XVII-4, pp 14-24, 2005

Y Chen, S H Collicott, “Experimental study on capillary flow in a vane-wall gap geometry”, AIAA Journal, Vol. 43, No. 11, pp 2395-2403, 2005

Y Chen, S H Collicott, “Investigation of the symmetric wetting of vane-wall gaps in propellant tanks”, AIAA Journal, Vol. 42, No. 2, pp 305-314, 2004

S Li, Y Chen, Z Ni, “Flow field features on hypersonic flow over rectangular obstacles”, Journal of Visualization, Vol. 4, No. 1, pp 73-79, 2001

S Li, Y Chen, Z Ni, “Investigation of the separated flow over rectangular obstacles”, Acta Aerodynamica Sinica, Vol. 18, No. zk, pp 60-66, 2000

H Ma, S Li, Y Chen, L Wu, “Shock wave and turbulent boundary layer interactions induced by circular cylinders with various heights”, Acta Mechanica Sinica, Vol. 32, No. 4, pp 496-490, 2000

Published Presentations:

Y Chen, R M Jenson, M M Weislogel, and S H Collicott, “Capillary Wetting Analysis of the CFE-Vane Gap Geometry”, AIAA-2008-0817, 46th AIAA Aerospace Sciences Meeting and Exhibit, January 2008, Reno, NV

M M Weislogel, R M Jenson, Y Chen, S H Collicott, and S Williams, “Geometry Pumping on Spacecraft: The CFE-Vane Gap Experiments on ISS”, 3rd International Symposium on Physical Sciences in Space (ISPS), Abstracts A11-2, pp. 443-444, Nara Japan, Oct. 22-26, 2007, Nara, Japan

M M Weislogel, R M Jenson, Y Chen, S H Collicott, J Klatte, and M Dreyer, “The Capillary Flow Experiments Aboard the International Space Station: Status”, paper IAC-07-A2.6.02, 58th International Astronautical Congress, September 24-28, 2007, Hyderabad, India

Y Chen, L S Melvin III, M M Weislogel, R M Jenson, S Dhuey, P F Nealey, “Design, fabrication, and testing of microporous wicking structure”, 33rd International Conference on Micro- and Nano-Engineering, 23-26 September 2007, Copenhagen, Denmark

Y Chen, D Bolleddula, M M Weislogel, “Capillary flow in cylindrical containers with rounded interior corners”, AIAA-2007-0745, 45th AIAA Aerospace Sciences Meeting and Exhibit, January 2007, Reno, NV

Y Chen, M M Weislogel, “Capillary flow in rounded interior corners”, HT-FED2004-56253, 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, July 2004, Charlotte, NC

Y Chen, S H Collicott, “Experimental study on the capillary flow in the vane-wall gap geometry”, AIAA-2004-1149, 42nd AIAA Aerospace Sciences Meeting and Exhibit, January 2004, Reno, NV

Y Chen, S H Collicott, “Investigation of the wetting behavior of asymmetrical vane-wall gap in propellant tanks”, AIAA-2003-4893, 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, July 2003, Huntsville, AL

Y Chen, S H Collicott, “Investigation of the wetting behavior of a vane-wall gap in propellant tanks”, AIAA-2002-3986, 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, July 2002, Indianapolis, IN

Y Chen, S H Collicott, “Effects of wicking and spin on bubble position in the Gravity Probe-B helium tank geometry”, AIAA-2002-1004, 40th AIAA Aerospace Sciences Meeting and Exhibit, January 2002, Reno, NV

Y Chen, S H Collicott, “A new design drop tower to study uncertainties in zero-gravity fluids experiments”, AIAA-2001-0609, 39th AIAA Aerospace Sciences Meeting and Exhibit, January 2001, Reno, NV

S Li, Z Ni, Y Chen, “A Study of dominant parameters on separated flow by visualization techniques”, Proceeding of 9th International Symposium on Flow Visualization, August 2000, Edinburgh, Scotland, UK

S Li, Y Chen, Z Ni, “Pressure measurement and flow visualization on hypersonic flow over rectangular cylinders”, Proceeding of 6th Triennial International Symposium on Fluid Control, Measurement and Visualization, August 2000, Canada

S Li, Y Chen, “A comparison of separated flow patterns induced by rectangular and circular cylinders”, Proceeding of 8th International Symposium on Flow Visualization, 1998, Italy

Y Chen, S Li, “Visualization of interaction flow induced by 3-D wedges”, Proceeding of 5th Triennial International Symposium on Fluid Control, Measurement and Visualization, September 1997, Hayama, Japan

S Li, Y Chen, Y Li, “Hypersonic flow over double-ellipsoid - experimental investigation”, AIAA-97-2287, 15th AIAA Applied Aerodynamics Conference, June 1997, Atlanta, GA

S Li, Y Chen, “A study of interactive flow induced by 3D wedges”, Proceeding of 3rd International Conference on Experimental Fluid Mechanics, June 1997, Russia

Y Chen, S Li, Y Shi, “A classification study of interaction between cylinder and turbulent boundary layer in hypersonic flow”, St-96-W.2.08, 47th International Astronautical Congress, October 1996, Beijing, China

S Li, Y Shi, Y Chen, “Oil flow visualization by real time injective technique”, Proceeding of 4th Asian Symposium on Visualization, May 1996, Beijing, China

S Li, Y Shi, Y Chen, H Guo, “The characteristics of the interaction flowfield induced by short cylindrical protuberances at hypersonic speed”, Proceeding of 6th National Symposium on Separation and Vortex Flow, September 1995, Yun’nan, China

Y Shi, Y Chen, S Li, “The study of hypersonic interactive flowfield induced by the cylinder with changeable height”, Proceeding of 6th National Symposium on Separation and Vortex Flow, September 1995, Yun’nan, China

S Li, Y Shi, Y Chen, “The effects of the short protuberances on interactive flowfield at hypersonic speed”, AIAA-95-1829, 13th AIAA Applied Aerodynamics Conference, June 1995, San Diego, CA

Y Chen, S Li, Y Shi, “The study of the windward flowfield of the cylinder with changeable height in hypersonic flow”, Proceeding of 5th National Conference on Fluid Mechanics, May 1995, Beijing, China

Presentations and Seminars:

R Jenson, Y Chen, M M Weislogel “Capillary Flow in Weakly 3-Dimensional Conduits”, 2007 APS Division of Fluid Dynamics 60th Annual Meeting, November 2007, Salt Lake City, UT

Y Chen, R Jenson, M M Weislogel, S H Collicott, “A study of critical wetting conditions of the CFE-Vane Gap Geometry”, 2007 APS Division of Fluid Dynamics 60th Annual Meeting, November 2007, Salt Lake City, UT

M M Weislogel, Y Chen , “Computational design tool for advanced capillary fluid systems aboard spacecraft”, NASA Glenn Research Center, April 2007, Cleveland, OH

M M Weislogel, R Jenson, Y Chen, D Bolleddula, “Capillary flow in weakly 3-D pores”, 2006 APS Division of Fluid Dynamics 59th Annual Meeting, November 2006, Tampa, FL

Y Chen, D Bolleddula, R Jenson, M M Weislogel, J Klatte, “A novel method to measure contact angle”, 2006 APS Division of Fluid Dynamics 59th Annual Meeting, November 2006, Tampa, FL

Y Chen, D Bolleddula, R Jenson, J Klatte, M Dreyer, M M Weislogel, “Computation of super-hydrophobic states and stability”, 2006 APS March Meeting, March 2006, Baltimore, MD

M M Weislogel, R Jenson, Y Chen, L S III Melvin, “Design of porous wick structures”, 2006 APS March Meeting, March 2006, Baltimore, MD

Y Chen, M M Weislogel, C Nardin, “Capillary driven flows along rounded interior corners”, 2005 APS Division of Fluid Dynamics 58th Annual Meeting, November 2005, Chicago, IL

Y Chen, M M Weislogel, “Capillary driven flows along rounded interior corners”, 2004 APS Division of Fluid Dynamics 57th Annual Meeting, November 2004, Seattle, WA

S H Collicott, Y Chen, R Karnes, “Fluids research in the Purdue University drop tower”, 7th Drop Tower Days and Catapult Presentation, September 2004, Bremen, Germany

Y Chen, M Bacich, C Nardin, A Sitorus, M M Weislogel, “The shape and stability of wall-bound and wall-edge-bound drops and bubbles”, AIMS' Fifth International Conference on Dynamical Systems and Differential Equations, June 2004, Pomona, CA

Y Chen. “Capillary Phenomena in Micro-Gravity”, Dept. of Mechanical and Materials Engineering, Portland State University, Portland, OR, June, 2004, invited seminar

Awards:

Certificate for contributions to the successful development and operation of the Capillary Flow Experiment, NASA, 2007

Research Symposium Honorable Mention award, School of Aeronautics and Astronautics, Purdue University, 2002

Magoon Award for Excellence in Teaching, Purdue University, 2001

Purdue Research Foundation Ph.D. Fellowship, January 1998 - December 1999

China Aerospace Corporation for Master Thesis Scholarship, 1995

China Aerospace Corporation Graduate Scholarship, 1994

Professional Affiliations:

American Institute of Aeronautics and Astronautics

American Physical Society