Abstract
A purpose-designed wind tunnel and moving ground, specifically for ground effect studies using laser diagnostics, has been constructed in the University of New South Wales' (UNSW) Advanced Fluid Dynamics Laboratory. The tunnel and moving ground speeds are powered independently through the use of AC motors and variable frequency controllers. Models are generally manufactured from acrylic to allow a laser sheet to pass through them for flow visualization and Particle Image Velocimetry (PIV) measurements. A three-dimensional Laser Doppler Anemometry (LDA) system, operating in backscatter mode, is also used to take coincident measurements for the ground effect study. The system employs a 5W ion argon laser producing three pairs of specific wavelength beams and a Bragg cell that produces a frequency shift in one of each of the pair of beams, allowing directional ambiguity to be resolved.
Original language | English |
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Pages (from-to) | 52-55 |
Number of pages | 4 |
Journal | AutoTechnology |
Volume | 7 |
Issue number | APR. |
Publication status | Published - Apr 2007 |
Externally published | Yes |