文档介绍：Simulation of Flow Field in Pre-dams and Phosphorus Elimination during Rainstorm
NING Ping, LI Bin
LI Bin, LU Xiwu*
Faculty of Environmental
Department of Environmental Engineering Kunming University of Science and Technology
Southeast University Kunming, China
Nanjing, China e-mail: ningping58@
e-mail: libinseu@
Abstract—Numerical simulation was established and validated by
the course of the rainstorm following 25 hours, which shows that II. PRE-DAMS 2D MODEL ESTABLISHED
the flow field can help to make the water in pre-dam effuse and
prevent the Dianchi Lake water from recharging. Soluble A. Control Function
reactive phosphorus (SRP) elimination was calculated along the Pre-dams (located at estuary of Ronda River) are so grading
whole rainfall. The result shows that the simulation is identical to at the bottom. It is one meter on average and two meters at the
the calculated and is able to account for SRP removal. SRP
deepest site, and the horizontal size is greatly over the vertical
removal efficiency is over percent forty eight in despite of
rainstorm and so the pre-dam technique may be a rewarding size. Based on the hypothesis above, we established the two-
choice for non point pollution control, especially for dimensional mathematical model of shallow water,
hypereutrophic lakes and reservoirs. ∂ξ∂(Hu) ∂(Hv)
+ + = 0 (1)