Flow characteristics and energy dissipation of an offset jet in a rectangular stormwater pond. Issue 3 (3rd July 2019)

• Record Type: Journal Article
• Authors: Li, Pengcheng; Zhu, David Z.; Krywiak, Dave; Yue, David
• Is Part Of: Canadian water resources journal =. Volume 44:Issue 3(2019)
• Page Start: 307
• Page End: 318
• Publication Date: 2019-07-03
• Subjects: Energy dissipation -- numerical model -- offset jet -- shear stress -- stormwater pond design -- turbulent jet; Water resources development -- Canada -- Periodicals; Water conservation -- Canada -- Periodicals; 333.9100971
• DOI: 10.1080/07011784.2019.1623078
• Languages: English
• ISSNs: 0701-1784

Abstract

Abstract: This paper presents a numerical modeling of a circular submerged offset jet in a rectangular stormwater pond and investigates various design parameters (inlet offset position, tailwater depth, bottom roughness, and basin width and length) on jet velocity decay and energy dissipation. Results from the numerical model suggest that the energy dissipation increases with a deeper pond tailwater depth, and decreases with offset height when the offset height is less than half of the tailwater depth. Additionally, the basin width and pond length will affect the velocity decay rate and energy dissipation. Riprap installed at the pond bottom has little influence on energy dissipation in the studied cases. Findings from this study can be useful in pond design for bottom erosion protection and improved energy dissipation.