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Show TABLE T SECONDARY COMBUSTOR WATER FLOW MODEL TEST CONDITIONS0 INJECTION ANGLE,/? MASS RATIO VELOCITY RATIO AREA REDUCTION (RELATIVE CASE (rhjttB/minlet) {vjeta/vinlet) (AA/Atnlet) TO BULK) 1 2 3 4 5 0.75 0.75 0.75 0.75 0.75 20 10 20 20 20 0.25 0.25 0.25 0.50 0.00 120° 120° 90° 120° 120" a Primary flow rate Secondary flow rate = 0.0038 m3/* (60gpm). = 0.0028 m3/s(',5f7pm). Bulk inlet velocity iDlet Reynolds number 0.092 m/s {0.30 ft/s) 1.65 x 10l intersection region or "probe volume" scatters light with intensity variations at fb. The relationship between the measured frequency f and the velocity u is u = 6(fb - f) (D where 6 is the fringe spacing, determined by the geometry of the LV optical train. Thus, the sign as well as the magnitude of the velocity component u is determined. For this study four coherent frequency shifted beams were generated from a single 514.5 nm argon ion laser beam using a two-component, water filled Bragg cell. The four beams formed the corners of a rectangle, with the horizontally separated beams being frequency shifted by 15 MHz and the vertically separated beams shifted by 45 MHz. These four beams were focused at the probe volume, as shown in Figure 4, producing two orthogonal sets of fringes, the horizontal set crossing the center of the probe volume at 15 MHz and the vertical set crossing at 45 MHz. The horizontal fringe spacing, 6x, was 25.7 3 urn and the vertical spacing, 6y, was 8.46 ym. A large off-axis backscatter collector lens focused scattered light from the probe volume onto an aperture in front of a photomultiplier tube. The pulsing light scattered by a particle in the probe volume was converted by the photomultipler tube into electrical pulses. The electrical pulse frequencies from the 6 |