396839 Configuration and Development of TSI Powersight Solid State Laser-Based LDV System

Monday, November 17, 2014
Galleria Exhibit Hall (Hilton Atlanta)
John Dominick III, University of Arkansas, Fayetteville, AR

The study of dense gas dispersion at atmospheric conditions is critical to understand the safety concerns of industrial operations where large amounts of toxic or flammable materials are stored and generated.  A large airborne release of these materials into the atmosphere could have catastrophic effects.  The Chemical Hazards Research Center (CHRC) at the University of Arkansas performs important research on dense gas dispersion.  The CHRC houses the world’s largest low speed wind tunnel which is used to simulate dispersion at atmospheric conditions.  Substantial amounts of data, including velocities, are recorded for modeling real life gas dispersion events.  Before conducting experiments, an accurate characterization of air flow within the wind tunnel, especially at the lower boundary layer, must be established.  The goal of this project was to install TSI’s Powersight Solid State Laser-based LDV System and use the system to characterize the velocity profile of the wind tunnel.  Hotwire anemometry velocity measurements were also taken and used to determine the accuracy of the LDV system’s velocity data.  The major phases of the project include the physical installation of the LDV system, alignment of the laser probes within the tunnel, initial LDV velocity measurements, hotwire anemometry measurements, and finally any adjustments needed to properly calibrate the LDV system.  Once the LDV’s measurements are established as accurate, data will be collected to characterize the wind tunnel.

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