Jan 2006 - Aug 2012: Georgia Institute of Technology, Graduate Research Assistant Advisor: Prof. Jerry Seitzman, Co-advisor: Prof. Tim Lieuwen
- Worked in collaboration with NASA Glenn Research Center on the project "Detection and Control of Instabilities and Blowout for Low Emission Combustors".
- Developed methods for robust detection of Lean Blowout (LBO) proximity sensing in swirl stabilized combustors using optical and acoustic sensors.
- Investigated LBO margin sensing in a liquid-fueled Lean Direct Injection (LDI) aero engine type combustor operating at an elevated pressure and inlet temperature.
- Investigated LBO margin sensing in a premixed gas-fueled combustor in the presence of combustion dynamics having equivalence ratio oscillations and flame acoustic interactions instability mechanisms.
- Modeling of acoustic reflections due to impedance discontinuities inside a combustor for explaining the limitations of using acoustic signals for LBO precursor detection.
- Developed a stochastic model for LBO precursor event occurrences and an analysis for a maximum allowed transient rates leading to LBO.
- Modeling and control of a high bypass ratio turbofan engine during rapid deceleration transients using Numerical Propulsion System Simulation (NPSS).
- Developed a novel control approach for faster engine decelerations based on LBO margin sensing.
- Examined LBO margin sensing with tunable diode laser absorption of H2O vapor in combustion products Indian.
June 2005 - May 2006: Institute of Technology, Madras, Chennai, India
- Investigated response of laminar diffusion flames subjected to harmonic acoustic excitation employing high-speed chemiluminescence imaging and Schlieren.
- Assisted in performing Acetone PLIF imaging in a non-premixed backward facing step combustor under unsteady operation.