White Paper
FINAL REPORT - Part 3
Prepared by:
Dr. Thomas J. Gieseke
NUWCDIVNPT - Code 8233
March 29, 1999
The pressure loss measurements are provided in Figure 11. The loss coefficient is based on the mean flow velocity and pressure drop as indicated in Equation 1. The resulting computed loss coefficient for the mixer (average for all measurements) was determined to be 13.6. This value is identical to the value reported by Alden Research Laboratory (13.6), Inc. in 1997. The exact agreement is considered to be coincidental. Measurement accuracy was approximately 5%.
K=13.6
Figure 11. Mixer Pressure Loss Results
The distributions of the streamwise and vertical velocity component statistics (mean and deviation) are summarized in figures 12 through 30. Table 1 summarizes the test grid. Mean vertical velocities were measured but are not presented as the values were all very small (less than 1 ft/s max) as compared to the fluctuations and are not considered informative.
TABLE 1
TEST GRID INFORMATION
Figure 13. Fluctuations of streamwise velocity contours at x/D=0.1
Figure 14. Fluctuations of vertical velocity contours at x/D=0.1
Figure 16. Fluctuations of streamwise velocity contours at x/D=0.33
Figure 19. Fluctuations of streamwise velocity contours at x/D=0.5
Figure 22. Fluctuations of streamwise velocity contours at x/D=0.67
Figure 25. Fluctuations of streamwise velocity contours at x/D=1.0
Figure 28. Fluctuations of streamwise velocity contours at x/D=1.33
Figure 29. Fluctuations of vertical velocity contours at x/D=1.33
Figure 31. Fluctuations of streamwise velocity contours at x/D=2.0
Figure 33. Fluctuations of streamwise velocity contours at x/D=2.67
Figure 35. Fluctuations of streamwise velocity contours at x/D=3.33
Figure 37. Fluctuations of streamwise velocity contours at x/D=8.0