Research and Design

Laser Based Diagnostics Design

  • Designing a three-velocity component LDV probe for shock-wave boundary-layer investigation studies. The probe will be used at WPAFB-AFRL, Trisonic Gas Dynamics Facility in Dayton, Ohio.
  • Designed a single-component borescopic LDV probe for locations where velocity measurements is difficult.
  • Designed a single-component LDV probe for measurements in supersonic, unsteady flow regimes, such as seen in pulse detonation engines.
  • Designed, a 2 velocity-component fiber-optic laser-Doppler velocimeter (LDV) probe to investigate the flow physics of IC engines with a probe resolution of 70mm diameter. The probe can fit into conventional car engine spark-plug location and can be traversed by 50 mm.​

Diagnostic Tools for Internal Combustion Engines

  • Designed, a 2 velocity-component fiber-optic LDV probe to investigate the flow physics of IC engines with a probe resolution of 70mm diameter. The probe can fit into conventional car engine spark-plug location and can be traversed by 50 mm.
  • Designed a 3 velocity-component fiber-optic LDV probe to investigate the flow physics of IC engines with a probe resolution of 70mm diameter. The probe can fit into conventional car engine spark-plug location and can be traversed by 50 mm.
  • Designed a fiber-coupled laser-induced fluorescence breakdown (LIBS) probe for measurement in harsh and difficult to reach environments.

Turbine Engine Health Monitoring

  •  Developed a test bed for testing novel control algorithms for rocket and engine control. An SR-30 turbojet engine was automated and fuzzy logic, PID, Artificial  Neural Network controllers were implemented prior to using Bayesian belief Network for engine health and sensor monitoring.
  • Developed a health-monitoring algorithm to detect the noise and the bias errors in sensors in turbojet engines using Bayesian Belief Networks.
  • Developed a mathematical model for a turbojet engine using the governing equations and Neural Networks.

Flow Control

  • Diffuser designs to increase the efficiency of the WPAFB-SARL tunnel.
  • Turret flow separation control over using passive devices.
  • Active flow control of a variable-throat, blow-down supersonic wind tunnel using genetic algorithms, neural networks, and gain scheduled PID.
  • Active flow control on serpentine inlets to reduce fan-face total-pressure distortions. Microphones together with micro vortex-generator jets are used to sense and actively control the total-pressure distortions on a Lockheed-Martin Unmanned Combat Air Vehicle inlet.

Turbulence Modeling

  • Investigation of a jet flow approaching convex cylindrical surfaces.
  • Investigation of the Reynolds number effects on 3-D turbulent boundary layers.
  • Investigation of the Reynolds-stress transport-rate budgets in three-dimensional high Reynolds number flows.
  • Evaluation of pressure-strain models in 3-D turbulent boundary layers in contrast to experimentally obtained pressure-strain data.
  • Evaluation of turbulent-diffusion models in 3-D turbulent boundary layers in contrast to experimentally obtained turbulent-diffusion data.