Aerosol Particle Collector Design Study Page: 6 of 51
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WSRC-STI-2007-511
List of Figures
Figure 1. Cross-sectional view of the reference design during the particle collection
p e rio d .......................................................................................................... . 4
Figure 2. Reference design for particle collector (standing on its side) ...................... 5
Figure 3. Cross-sectional view of the modeling region during the particle collection
p e rio d .......................................................................................................... . 6
Figure 4. Collection efficiency as function of applied field strength for 1- m particle at
1000 Ipm........................................................................................................10
Figure 5. Collection efficiency vs. dielectric constant for 8-in collection length........... 11
Figure 6. Collection efficiencies vs. particle size for two dielectric constants and the
reference design............................................................................................13
Figure 7. Collection efficiency vs. dielectric constant for two different collection lengths.13
Figure 8. SRNL recommended collector geometry based on 1000 Ipm flow rate and no
desig n restrictions ................................................................................. . . 16
Figure 9. Comparison of collection efficiency between the two collectors for 1- m
particle under 1000 liter/min ....................................................................... 17
Figure 10. Comparison of velocity contours between the two collectors for 1- m particle
under 1000 liter/min.......................................................................................19
Figure 11. CFD models for the reference and L-type collectors ................................. 20
Figure 12. Comparison of velocity contours for the reference and L-type collectors ..... 21
Figure 13. Comparison of the turbulent intensities for the reference and L-type collectors
...................................................................................................................... 22
Figure 14. Velocity contour for 1.8-in separation gap distance for 2:1 transition region 24
Figure 15. Comparison of vertical velocity components for the collectors with different
wall surface conditions .............................................................................. 25
Figure 16. Comparison of flow patterns for the collectors with different wall surface
co nd itio ns ................................................................................................ . . 2 6
Figure 17. Collection plate with 0.3-in flow obstruction near the entrance of collector
re g io n ...................................................................................................... . . 2 7
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Lee, S. & Richard Dimenna, R. Aerosol Particle Collector Design Study, report, September 27, 2007; [Aiken, South Carolina]. (https://digital.library.unt.edu/ark:/67531/metadc879242/m1/6/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.