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Research Overview


Research Overview

 

The research at the Ohio State University’s Gas Dynamics and Turbulence Laboratory (GDTL) is focused primarily on high-speed and high Reynolds number flows of interest in propulsion and aerodynamic applications. The work revolves around the understanding of flow physics and flow control to achieve a desired outcome. It also involves development of advanced laser-based flow diagnostics and development of high amplitude and high bandwidth actuators. GDTL brings together researchers with different expertise from OSU, the Air Force Research Laboratory, NASA Glenn Research Center, and industry to work on problems of national interest. Currently there are several focused research areas:

  • Aeroacoustics of High-Speed and High Reynolds Number Jets: Various advanced laser-based flow diagnostics with acoustic measurements are used to identify and understand jet noise sources. High amplitude and high bandwidth plasma actuators are being developed and used to control various jet instabilities for noise mitigation.
  • Mixing Enhancement in Supersonic Jets: High amplitude and high bandwidth plasma actuators are being used to force various instabilities of supersonic and high Reynolds number jets to increase entrainment and mixing of the jet with ambient air.
  • Feedback Flow Control: GDTL has been in the forefront research in the development and implementation of technologies for feedback flow control. The focus of current activity is on high-speed and high Reynolds number jet control using both non-model based feedback control such as extremum seeking as well as reduced order model based feedback control using the proper orthogonal decomposition and Galerkin projection.
  • Supersonic Inlet Control: High amplitude and high bandwidth plasma actuators are being used to control shock wave – boundary layer interaction in order to improve pressure recovery in and the overall performance of a supersonic inlet.
  • Compressibility Effects: Various advanced laser-based flow diagnostics are being developed and used to explore fundamentals of compressibility effects in mixing layers and jets.