This page uses extracted PDF text. Text can misread numbers, dates or table columns. Check the PDF before quoting or interpreting it. Redacted areas remain redacted.
2
10% for the 80 ft version. Taller fences create altered recirculation patterns that can increase particle
lofting over the top.
Full Wrap Often Underperforms: A full 360-degree enclosure can trap wind inside the terminal, generating
internal vortices that increase dust escape—particularly for fine particles under SW winds, where a full-
wrap 80 ft fence allows 62% escape versus 26% for a three-quarter wrap at the same height.
WNW Wind Is the Most Challenging Direction: Even the best configurations leave 30–50% of particles
escaping under west-northwest winds, compared to as low as 10–13% under SW and SSE winds.
Recommendation
DSI recommends implementation of 80 ft, 50% porous half-wrap or three-quarter wrap wind fences,
prioritizing coverage of the dominant SW and SSE wind exposures. Pile heights should be maintained at
or below 80 ft to maximize fence effectiveness. Full-wrap and 100 ft configurations should be avoided
based on CFD results. Post-installation field validation (TSP monitoring, anemometry) is recommended to
confirm modeled reductions. Detailed simulation models supporting this conclusion are provided in
Appendices D and E.
Jump to an indexed page (88 of 88)