SUBRAMANIAN, Chelakara S.

Chelakara S. SUBRAMANIAN}

Contact Information

Professor, Program Chair
Mechanical & Aerospace Engineering
College of Engineering
F.W. Olin Engineering, 212
Phone: 7614
Email: subraman@fit.edu

Web & Social Networking

College of Engineering

Visit My Website

Research & Project Interests

Dr. Subramanian's main interest is in structure of turbulence in various types of complex flows (including vortex imbedded boundary layers; curved shear layers; rigid, large, and flexible roughness effects; rotating shear layers and unsteady flows). The purpose is to explain the underlying mechanism of turbulence and to develop better flow models, which will help to develop more efficient engines for space vehicles and high-performance airfoils for the future generation airplanes. Other interests include:

• Design, testing and development of flow measuring instruments, such as wireless sensor network, laser Doppler, particle imaging and hot-wire anemometers; miniature pressure and temperature probes; and pressure-sensitive and temperature-sensitive paints. Flow visualization using laser induced fluorescence.

• Wind loading on structures and road vehicles. Hazard mitigation

• Detection of debonding in Thermal Protection System of Shuttle Orbiter and Detection of Lightning through Clouds Using Short-Pulse Lasers and Streak Camera.

• Gas turbine film-cooling, internal combustion and hydraulic propulsion systems. Alternative fuels. Desiccant air-conditioning systems

• Wind tunnel design and aerodynamic testing.

Keywords

Energy Efficient Systems
Turbulence Measurement and Analysis
Wind Tunnel Testing
Wireless Sensor Network
Gas Turbine Film-Cooling
Boundary Layer Roughness
Pressure and Temperature
Sensitive Paint Measurement
Material Flaw Detection using Short-Pulse Laser
Wind Hazard Engineering

Professor, Program Chair
Mechanical & Aerospace Engineering, College of Engineering

Personal Overview

Affiliations
• ASME member

• AIAA (Associate Fellow)

• APS member

• Aero. Soc. of India (Associate Fellow)

• MSE (member of Society of Engineers, UK)

• P.Eng (UK) Professional Engineers

• Eng. P. Eur. International Professional Engineers

• Order of the Engineer

• ISA Member

Educational Background

B.E. Bangalore University, India 1973
M.E., Indian Institute of Science, India 1975
Ph.D. University of Newcastle, Australia 1982

Recognition & Awards

Assoc. Fellow AIAA, P.Eng(UK), FIIE

Professional Experience

• Professor (2005-present), Associate professor and former AE program chair (1996-99), Aerospace Engineering, Florida Institute of Technology, 1992–present

• Adjunct research professor, Naval Postgraduate School, Calif., 1988–1991

• Senior research engineer and group manager, British Maritime Tech., U.K., 1986–1988

• Postdoctoral research assistant, Imperial College of Science and Technology, U.K., 1982–1986

• Teaching assistant, University of Newcastle, Australia, 1977–1981

• Senior research fellow, Indian Institute of Science, India, 1975–1977

Current Research

• Hurricane Loss Model (FDOI/FIU funded)

• Measurement and Characterization of Effects of Hurricane Winds Using Wireless Sensor Network (NSF funded)

• Remote Sensing of Wind Pressures on Coastal Residences (NOAA/ FL Sea Grant finded)

• Detection of Debonding of TPS Using Short-Pulse Lasers (FSREGP funded)

• Detection of Lightning Through Clouds (FSREGP Funded)

• Effects of Strong Roughness on Boundary Layer Turbulence Structure (WPAFB funded)

• Effects of Marine Bio-Fouling Roughness on Boundary layer Structure (NSF/HBOI Funded)

• Wind Effects on Emergency Rescue Vehicles ( FEMA/FDCA funded)

Selected Publications

1. New Device and Method for Measuring Thermal Conductivity of Thin-films, ISA Transactions journal, Vol. 45, No. 3, July, 2006, pp. 313-318
2. A Wireless Multi-Point Pressure Sensing System: Design and Operation, IEEE Sensors journal, Vol.5, No.5, October 2005, pp 1068-1074
3. Application of a Wireless Pressure Sensing System to Coastal Wind Moinitoring, Internation Journal of Wind and Structures, Vol. 8, No. 3 (2005), pp 179-196
4. Flow Around an Object Projected From A Cavity Into A Supersonic Freestream, AIAA Journal, Vol.43, No. 7, July 2005, pp 1465-1475
5. Temperature Distribution in Different Materials Due to Short-Pulse Laser Irradiation, Journal of Heat Transfer Engineering, August 2005, Vol. 26, No. 8 (2005), pp. 41-49
6. Effects of Strong Irregular Roughness on the Turbulent Boundary Layer, Flow, Turbulence and Combustion, Vol.72 (2-4), 2004, pp. 349-368
7. Wind Effects on Emergency Vehicles, Journal of Wind Engineering and Industrial Aerodynamics, Vol.92, 2004, pp. 663-685
8. A study of Hydrodynamic Characteristics of Boundary Layer with Algae Roughness, SNAME Marine Technology Journal, Vol.41, No. 2, April 2004, pp. 60-66
9. Non-Contact Measurement of Marine Bio-Fouling Roughness, SNAME Marine Technology Journal, Vol.41, No.2, April 2004, pp. 67-73
10. Hurricane Damage Prediction Model for Residential Structures, ASCE Journal of Structural Engineering, Vol. 130 , No.11 ,Nov 2004, pp. 1685-1691
11. Experimental Study of Break-Away Sign Connections, ASCE Journal of Transportation Engineering, Vol.128, No.1, January 2002, pp. 1-4
12. A New Self-Referencing PSP Measurement, AIAA Journal, Vol, 40, No.3, 2002, pp 582-84, 2 Science Index Citations
13. "Stepper Motor Control with a PC-Based Data Acquisition Toolkit" IEEE Canadian Review, Autumn 1999, pp. 9-14
14. Bursts and the Law of the Wall in Turbulent Boundary Layers, Journal of Fluid Mechanics, vol. 241, 1992, pp. 75-108
15. "Study of the Imposition of Bulk Flow Pulsations on Plane Channel Flow at Moderate Stokes Numbers" Experimental Thermal and Fluid Sciences Journal, vol 5, no. 2, March 1992, pp. 145-161
16. "Surface Heat Transfer and Flow Properties of Vortex Arrays Induced Artificially and From Centrifugal Instabilities", Int. Journal of Heat and Fluid Flow, vol 13, no 3, Sept. 1992, pp. 210-223, 6 Science Index Citations
17. "Features of Wavy Vortices in a Curved Channel From Experimental and Numerical Studies" Physics of Fluids A Journal, 4(4), April 1992, pp. 695-709
18. " Effect of Vortices with Different Circulations on Injectant and Heat Transfer Downstream of A Single Film-cooling Hole in a Turbulent Boundary Layer, ASME Transaction - Journal of Turbomachinery, vol. 113, no. 3, July 1991, pp. 433-441
19. " Effect of Vortices with Different Circulations on Injectant and Heat Transfer Downstream of A Row of Film-cooling Hole in a Turbulent Boundary Layer". ASME Transaction - Journal of Heat Transfer , vol. 113, 1, 1991, pp. 79-90
20. "Turbulent Spot Growth in Favourable Pressure Gradients", AIAA Journal, vol. 22, no. 6, June 1984, pp. 837-839
21. "Reynolds Number Dependence of the Structure of a Turbulent Boundary Layer" Journal of Fluid Mechanics, vol. 121, 1982, pp.123-140
22. "Comparison of Conditional Sampling and Averaging Techniques in a Turbulent Boundary Layer" Journal of Fluid Mechanics, vol. 123, 1982, pp.335-362,
23. "A Model for the Skewness of the Temperature Derivative in a Turbulent Boundary Layer", Physics of Fluids Journal, 25(6), June 1982, pp.957-958
24. "Spanwise Correlation of Temperature in a Turbulent Boundary Layer", Physics of Fluids Journal, 25(7), July 1982.
25. "Response of a Turbulent Boundary Layer to a Sudden Decrease in Wall Heat Flux", Int. Journal Heat Mass Transfer, vol. 24, no. 10, Oct. 1981, pp. 1641-1647, 26. "Effects of Reynolds Number on a Slightly Heated Turbulent Boundary Layer", Int. Journal Heat Mass Transfer, Nov. 1981, pp. 1833-1846