Water environment mathematical model simulation precision comprehensive evaluation method

Abstract

The invention discloses a comprehensive evaluation method for the simulation precision of a water environment mathematical model. The method comprises the following steps: determining evaluation indexes reflecting the simulation precision of the model; determining a model hydrodynamic simulation precision evaluation factor; determining a model water quality simulation precision evaluation factor;selecting a model simulation precision evaluation point location; acquiring measured values and analog values of the hydrodynamic evaluation factor and the water quality evaluation factor on each evaluation point; calculating evaluation indexes of a hydrodynamic evaluation factor and a water quality evaluation factor on each evaluation point; calculating average evaluation indexes of the model hydrodynamic simulation precision and the model water quality simulation precision; and comprehensively evaluating and analyzing the simulation precision of the water environment mathematical model. According to the method, the three evaluation indexes of the relative error, the determination coefficient and the Nash efficiency coefficient are comprehensively considered, the defect that a traditionalevaluation method is not comprehensive in consideration is overcome, the simulation precision of the water environment mathematical model is objectively and scientifically evaluated, and the evaluation result is more comprehensive and objective.

Description

technical field [0001] The invention relates to a comprehensive evaluation method for simulation precision of a water environment mathematical model, which belongs to the technical field of model simulation. Background technique [0002] With the rapid development of the national economy and the sharp increase in the demand for natural resources in all walks of life, water environment problems have become increasingly prominent. Many countries and regions have strengthened research on water environment monitoring, water environment simulation, water environment management and restoration. . The water environment model plays a very important role in the research of water environment problems because of its advantages of less investment, short operation period, high efficiency and flexibility. [0003] According to the classification of research objects, water environment models can be divided into surface water environment models and groundwater environment models. Among th...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a comprehensive evaluation method for the simulation accuracy of a mathematical model of the water environment, to solve the shortcomings of the traditional water environment model simulation accuracy evaluation methods in the prior art that are not considered comprehensive and mostly only judged by a simple index

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