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    David  R. Williams, PhD - Professor of Mechanical & Aerospace Engineering

    David R. Williams, PhD

    Professor of Mechanical & Aerospace Engineering
    Director, Fluid Dynamics Research Center

    Office: E1-209C

    Phone: 312.567.3192
    Fax: 312.567.3173
    Email: david.williams@iit.edu
    Web: Fluid Dynamics Research Center
         

    Expertise

    • Flow control, flow metering, fluidic oscillators, linear and nonlinear wave interactions in transitioning flows, acoustic measurement techniques.

    Education

    • Bachelor of Engineering in Mechanical Engineering, Stevens Institute of Technology, 1976
    • Master of Science in Fluid Dynamics, Princeton University, 1979
    • Doctor of Philosophy in Fluid Dynamics, Princeton University, 1982

    Research

    AFOSR - Active Control of Acoustic Tones in Aircraft Cavities

    Aircraft are limited in the flight speed at which weapons bay cavities can be opened, because of the large amplitude acoustic resonances that develop. This project is aimed at preventing acoustic resonances in aircraft cavities by using active control. Pressure sensors detect the onset of resonant oscillations, which are cancelled by acoustic actuators. This technology may impact the noise in wheel well cavities on commercial aircraft.

    Rockwell Science Center - Measurements of Stores Released from Weapons Bay Cavities

    Releasing stores from internal weapons bay cavities has been a somewhat unpredictable process leading to large variability in store trajectories. The problem can be traced to the interaction between the store and the large oscillations in the shear layer present over the cavity. Researchers at Rockwell Science Center have developed new models for predicting the trajectories based on asymptotic methods. Experiments are being conducted in the IIT NDF wind tunnel to document the trajectories of generic models that are released from a cavity, in order to test the validity of the theory.

    Acoustics Activities

    The phenomenon of sonoluminescence is being studied experimentally in search of the mechanism leading to light production from concentrated acoustic waves. Acoustic beam-forming techniques are under investigation as a method to determine the key noise-producing elements from the CTA elevated train.

    Current Projects

    Awards/Honors

    • Fellow, American Physical Society, 2006
    • IIT Sigma Xi Award for Excellence in Research, 2006
    • Honeywell Advanced Technology Achievement Award, 2006
    • IITRI Fellow, 1998
    • Stryker Outstanding Student Organization Advisor Award, 1990
    • MAE Dept. Excellence in Teaching Award, 1988
    • Alexander von Humboldt Fellow, 1982
    • Stevens Institute of Technology, Book Award, 1976
    • Guggewnheim Fellowship, Princeton University, 1976

    Patents

    Books

    Selected Publications

    Professional Society Memberships

    Department of Mechanical, Materials & Aerospace Engineering
    10 West 32nd Street
    243 Engineering 1 Building
    Chicago, IL 60616-3793
    Phone: 312.567.3175
    Fax: 312.567.7230