Research
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Acoustics
Method for Efficient Evaluation of Temperature Using the NASA Polynomials
This study presents an efficient method for calculating temperature from enthalpy using a modified NASA polynomial approach, which improves accuracy and stability over traditional iterative methods.
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Acoustics
Hybrid RANS/LES Turbulence Modeling
A novel hybrid RANS/LES turbulence model based on partial-averaging closure has been proposed for the simulation of unsteady turbulent flows.
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Measurement Technology
A RF Polarimetry Sensor for Rotor Whirl Measurement
A novel instrumentation system using Radio Frequency (RF) polarimetry was studied in order to measure rotor whirl in turbomachinery applications.
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Measurement Technology
A RF Sensor System for Sand Monitoring
A RF sensor system was developed to quantify the density of dispersed sand in a high-speed airflow.
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Aeromechanics & Elasticity
Open Rotor Propulsion System
Sound and vibration are being studied using a facility that has been modified to study open rotor propulsion systems.
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Applied Systems & Hypersonics
Plasma Shockwave Control Within High-Speed Engines
Experiments using electrical energy deposition (plasma) were conducted to control shockwave dynamics in a supersonic diffuser flow.
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Aerodynamics & Internal Flow
Computational Modeling of a Compressor Rotor Subject to Inlet Distortion
The performance of a transonic axial compressor when subjected to non-uniform inflow conditions was studied using experiments, numerical simulations, and a simplified unsteady aerodynamic model.
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Acoustics
The Advanced Noise Control Fan
Experiments using the Advanced Noise Control Fan facility demonstrate technology with the potential to reduce aircraft engine noise.
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Aerodynamics & Internal Flow
Steady, quasi-1D internal compressible flow with area change, heat addition, and friction
A new, closed-form solution is derived and applied to several examples for steady, quasi-one-dimensional internal compressible flow that incorporates effects of area change, heat addition, friction, and flow non-uniformity.
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Aerodynamics & Internal Flow
Entropy transport for quasi-one-dimensional flow
A new entropy transport equation for quasi-one-dimensional flow is derived, capturing the effects of area change, heat transfer, and friction to better understand entropy production mechanisms in fluid dynamics.