Martin Yanbao Ma

Vita

Dr. Yanbao Ma currently works as postdoctoral research associate at Micro Systems Laboratories of UCLA. His research interests include mechanics of fluid flowing in all different length scales and speed range. In his doctoral research, he investigated the mechanisms of cause of stability in high-speed boundary-layer flows by both direct numerical simulation method and linear stability analysis in order to predict and control laminar-turbulent transition of space transportation vehicles. After receiving his Ph. D. degree in mechanical Engineering from UCLA, he joined Micro Systems Lab of UCLA and worked on micro-fluidic biological sample preparation system in 2003.

Current Research

Conducting experimental and numerical investigation on micro-fluidics systems for bacteria concentration and detection. Extensively experiencing with MEMS fabrication.

Education

• Ph.D. in Mechanical Engineering, University of California, Los Angeles, California, 2003.
• M.A. in Mechanical Engineering, Chinese Academy of Sciences (CAS), Beijing, P.R.China, 1997.
• B.S. in Theoretical and Applied Mechanics, University of Science and Technology of China, Hefei, P.R.China, 1994.

Work Experience

Postdoctoral Research, 2003-present

• Designed and fabricated bio-filters to concentrate E. coli by using dielectrophoretic (DEP) force; simulated electric field and estimate DEP force to direct design.
• Designed and fabricated micro-mixer to achieve chaotic mixing in micro channel flow; simulated flow in micro-fluidics and compare with experimental results.
• Integrated micro mixer, bio-filter and biosensors to form micro fluidic systems for bacteria detection.

Ph.D. Research, 1997-2002

• Studied compressible boundary-layer flows based on spectral methods.
• Simulated supersonic flow over sharp flat plates or wedge by combining shock-capturing methods and high-order shock-fitting methods.
• Investigated characteristics of supersonic boundary-layer normal modes by applying multi-domain spectral methods in linear stability analysis.
• Studied receptivity mechanisms of supersonic boundary layers.
• Studied heat transfer for reacting hypersonic boundary layer flows.
• Simulated reacting hypersonic flow by using shock-fitting methods.
• Investigated real gas affect on stability and receptivity of hypersonic boundary-layer flows.
• Studied magnetohydrodynamic (MHD) affect on supersonic flow.

M.S. Research, 1994-1997

• Simulated turbulent mixing process of air jets under water.
• Studied interaction between shock wave and turbulent mixing.

Publications

Journal publications

1. Y. Ma, X. Zhong, Receptivity of a supersonic boundary layer over a flat plate. Part 1: wave structures and interactions. Journal of Fluid Mechanics, Vol 488, 2003, pp31-78.
2. Y. Ma, X. Zhong, Receptivity of a supersonic boundary layer over a flat plate. Part 2: receptivity to freestream sound. Journal of Fluid Mechanics, Vol 488, 2003, pp79-121.
3. Y. Ma, X. Zhong, Receptivity of a supersonic boundary layer over a flat plate. Part 3: effect of different freestream disturbances. Submitted to Journal of Fluid Mechanics.
4. X. Zhong and Y. Ma, Receptivity of Mach 7.99 flow over an axisymmetric blunt cone to freestream acoustic waves. Submitted to Journal of Fluid Mechanics.
5. Y. Ma, X. Zhong, Linear stability and receptivity to frees-stream disturbances of Mach 8 flow over a sharp wedge. Under preparation. To be submitted to Physics of Fluids, A.
6. Y. Ma, X. Zhong, Real gas effect on linear stability and receptivity to frees-stream disturbances of hypersonic flow over a flat plate. Under preparation. To be submitted to Journal of Fluid Mechanics.

Conference publications

1. C. Folk, P. Wong, W. Tan, N. Li, Y. Ma, CM Ho, Micro/Nano fluidics for biosignature detection. XVII National and VI ISHMT/ASME Heat and Mass Transfer Conference, IGCAR, Kalpakkam, Jan. 5-7, 2004 Paper No HMT-2004-P1, pp. 1-5.
2. Y. Ma, X. Zhong, Linear stability and receptivity to frees-stream disturbances of a Mach 10 nonequilibrium reacting oxygen flow over a flat plate. AIAA paper 2004-0256.
3. Y. Ma, X. Zhong, Receptivity to frees-stream disturbances of Mach 8 flow over a sharp wedge. AIAA paper 2003-0788.
4. X. Zhong, Y. Ma, Numerical simulation of leading edge receptivity of Stetson's Mach 8 blunt cone stability experiments. AIAA paper 2003-1133.
5. X. Zhong, C. W. Whang, and Y. Ma, Numerical simulation of hypersonic boundary layer stability and Receptivity. Frontiers of Computational Fluid Dynamics, edited by D.A. Caughey and M.M. Hafez, World Scientific, New Jersey, pp. 381-396, 2002.
6. X. Zhong, Y. Ma, Linear stability and receptivity of Stetson's Mach 8 blunt cone stability experiment. AIAA paper 2002-2849.
7. Y. Ma, X. Zhong, Receptivity to freestream disturbances of Mach 4.5 flow over a flat plate. AIAA paper 2002-0140.
8. Y. Ma, X. Zhong, Numerical simulation of receptivity and stability of nonequilibrium reacting hypersonic boundary layers. AIAA paper 2001-0892.
9. Y. Ma, X. Zhong, Direct numerical simulation of instability of nonequilibrium reacting hypersonic boundary layers. AIAA paper 2000-0539.
10. Y. Ma, X. Zhong, Numerical simulation of transient hypersonic flow with Real gas effects. AIAA paper 99-0416, 1999.

Contact Info

Mailing Address:
Mechanical and Aerospace Engineering Department
48-121 Engineering IV, UCLA
420 Westwood Plaza
Los Angeles, CA 90095

Phone: 310-825-1350
Fax: 310-825-1350
Email: yanbao@seas.ucla.edu