Research

Current areas of research:

Aero-optical properties of transonic boundary layers and shear layers.
Experimental investigation of large-scale coherent structure in flows and it's effect on a propagating beam degradation.

Usage of different experimental techniques: Malley probe, 2-D wavefront sensor, lenselet array Hartmann sensor.

Dynamics of subsonic jets.
Investigation of large-scale coherent structure in jets, their origin, evolution and related macrophysics. Modelling of large-scale structure in jets. Acoustical radiation.

Usage of different techniques: Wavelet Transform, POD (Proper Orthogonal Decomposition), LSE (Linear Stochastic Estimation)

Recent Publications

• A. M. Nightingale, S. Gordeyev and E. J. Jumper, ” Optical Characterization of a Simulated Weakly-Compressible Shear Layer: Unforced and Forced ,” , AIAA Journal, Vol. 47, No. 10, Oct. 2009, pp. 2298-2305.
• D. Nahrstedt, Y-C. Hsia, E. Jumper, S. Gordeyev, J. Ceniceros, L. Weaver, L. DeSandre, and T. McLaughlin, “Wind Tunnel Validation of Computational Fluid Dynamics-Based Aero-Optics Model” , Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2009, 223(G4), pp. 393-406.
• S. Gordeyev and E. Jumper, “Fluid Dynamics and Aero-Optical Environment Around Turrets,” 40th AIAA Plasmadynamics and Lasers Conference, San-Antonio, TX, 22-25 June, 2009, AIAA Paper 2009-4224.
• S. Abado, S. Gordeyev and E. Jumper, “Designing and Testing a New Shack- Hartmann High Bandwidth 2- D Wave- Front Sensor,” 40th AIAA Plasmadynamics and Lasers Conference, San-Antonio, TX, 22-25 June, 2009, AIAA Paper 2009-4225.
• S. Gordeyev, E. Jumper, B. Vukasinovic, A. Glezer and V. Kibens "Fluidic Control of a Turret Wake, Part II: Aero- Optical Effects" , 47th Aerospace Science Meeting and Exhibit, Orlando, Florida, 5-8 Jan, 2009, AIAA Paper 2009-0817.
• J. Cress, S. Gordeyev, M. Post and E. Jumper "Aero-Optical Measurements in a Turbulent, Subsonic Boundary Layer at Different Elevation Angles", 39th Plasmadynamics and Lasers Conference, Seattle, Washington, 23 - 26 June, 2008, AIAA Paper 2008-4214.
• J. Siegenthaler, E. Jumper and S. Gordeyev, "Atmospheric Propagation Vs. Aero-Optics", 46th Aerospace Science Meeting and Exhibit, Reno, Nevada, 7-10 Jan, 2008, AIAA Paper 2008-1076.
• B. Vucasinovic, A. Glezer,S. Gordeyev, E. Jumper and V. Kibens, Active Control and Optical Diagnostics of the Flow over a Hemispherical Turret", 46th Aerospace Science Meeting and Exhibit, Reno, Nevada, 7-10 Jan, 2008, AIAA Paper 2008-0598.
•  Current Projects
• All publications
• 'Experimental Investigation of Dynamics of Planar Jet via POD and Wavelet transform' - written candidacy exam, Apr, '98.


Presentations and Abstracts

• Two presentations on the 49th Annual Meeting, Division of Fluid Mechanics of the American Physical Society at Syracuse University, November 24-26, 1996
• Abstract of presentation on the 50th Annual Meeting, Division of Fluid Mechanics of the American Physical Society at San Francisco, November 23-25, 1997. I like APS meetings !
• Abstracts of two presentations (1), (2) on the 51st Annual Meeting, Division of Fluid Mechanics of the American Physical Society at Philadelphia, November 23-24, 1998.
• Abstracts of two presentations (1), (2) on the 52st Annual Meeting, Division of Fluid Mechanics of the American Physical Society at New Orleans, November 21-23, 1999.
• Two presentations on the 53st Annual Meeting, Division of Fluid Mechanics of the American Physical Society at Washington, DC, November 19-21, 2000.

Curriculum Vitae
Publications
Literature Review on POD, LSE and Wavelet Techniques
Here are some applications of POD (Karhunen-Loeve (KL) Decomposition) in different areas other than aerodynamics.
A few links to wavelet related groups.
A brief tutorial of wavelet theory and applications.
Link to POD investigation of basic velocity modes in a circular jet by J. Citriniti.
Visualization of supersonic flow around different bodies by schlieren system

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