Igapó I 湖中污染物的流动与扩散研究
Study of flow and dispersion of pollutants in the Igapó I Lake
AI总结：
通过数值模拟，基于二维水动力学模型和QUAL2E反应输运模型，研究了Igapó I湖的水质和污染物扩散。
摘要：
本工作针对位于巴西巴拉那州隆德里纳市的Igapó I湖，提出了一个水质数学模型。通过数值模拟对湖泊污染进行定性分析，为理解相关过程提供信息。对于湖泊的水动力学流动，考虑了一个水平二维模型。假设为不可压缩牛顿流体，通过Navier-Stokes方程和压力方程模拟水动力学速度场。该水动力学速度场被引入反应输运模型。反应部分仅考虑碳-氮循环，由QUAL2E模型描述。根据溶解氧亏缺、生化需氧量和污染物负荷进行的数值模拟的定性和定量分析，为更好地理解Igapó I湖的水文学和水质提供了依据。
英文摘要：
This work proposes a mathematical model on the water quality for Igapó I Lake, located in Londrina, Paraná. A qualitative analysis on the pollution of the lake is carried out through numerical simulations which provide informations for the understanding of the processes involved. For the hydrodynamic flow of the lake, a horizontal two-dimensional model is considered. The hydrodynamic velocity field is simulated by the Navier-Stokes and pressure equations, supposing an incompressible newtonian fluid. This hydrodynamic velocity field is inserted in the reactive-transport model. The reactive part of this model considers only the carbon-nitrogen cycle, described by the QUAL2E model. A qualitative and quantitative analysis of the numerical simulations conducted in function of the deficit of dissolved oxygen, of the biochemical oxygen demand and of the load of pollutants provided a better understanding of the hydrology and of the water quality in the Igapó I Lake.
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