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Numerical simulation of algae space-time distribution of Yuqiao Reservoir |
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Abstract Yuqiao Reservior is the source water for the water supply of Tiajin City. It’s therefore very important to study the spatial and temporal pattern of algae in order to improve the water quality against algae bloom. This paper introduced a comprehensive alage growth coefficient, which could reflect the influences of multiple complex non-linear factors regarding algae growth and could be used for characterizing the growth trend. The comprehensive coefficient, as the variables, was integrated into the convection-diffusion equation of a dynamic migration model to achieve the coupling of growth model and dynamic migration model. The new model can obtain the results, which took into account both the effects of algae growth and transportation in water. The results of the spatial and temporal distribution of algae by using this model could clearly show the high concentration period and easily enriched region. The accuracy of predication was acceptable. The results indicate that the model could be used for predicting algae growth, enrichment and migration. It can provide scientific evidence for preventing algae bloom and taking timely responding measures.
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Received: 12 July 2012
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