Interests: Experimental fluid dynamics, environmental flows, turbulent boundary layers, real-time flow control, propulsion, drag-reducing surfaces, microfluidics, coherent wave fields, shock wave boundary layer interaction, jet aeroacoustics, nonlinear acoustics, reduced-order modeling, stochastic tools, transient signal processing.
Turbulent boundary layers
- Direct measurements of local wall-drag in smooth- and rough-wall turbulent boundary layers (TBLs).
- Large-scale modulation and large-scale arrangement of small scales in high Reynolds number TBLs.
- Real-time, active control of large-scale structures in high Reynolds number TBLs.
- Investigator: Dr. Ivan Marusic
Jet aeroacoustics
- Aeroacoustic aspects of heated and unheated supersonic jets.
- Nonlinear acoustic waveform distortion in noise fields of supersonic jets.
- Crackle-noise emitted by supersonic jets.
- Investigator: Dr. Charles E. Tinney | Collaboration: National Center for Physical Acoustics
Supersonic nozzle flows
- Shock wave boundary layer interaction (SWBLI) in overexpanded, large area ratio nozzles.
- Side-load unsteadiness of thrust-optimized/truncated-ideal-contoured nozzles.
- Transient unsteadiness during start-up and shut-down.
- Vibro-acoustic loads during start-up, representative of nozzle ignition.
- Investigator: Dr. Charles E. Tinney | Collaboration: NASA Marshall Space Flight Center
Stochastic processing
- Reduced-order models and system identification of complex data.
- Stochastic estimation techniques.
- Signal processing: spectral analysis and joint-time frequency distributions.