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Research on Parameter Inversion Method Applied to Water Environment Mathematical Model

Author: AiKeFeng
Tutor: ZuoTao；GuoWenYan
School: Xi'an University of Technology
Course: Computational Mathematics
Keywords: Inverse problem Optimization Theory The straight-line method Genetic Algorithms
CLC: X824
Type: Master's thesis
Year: 2008
Downloads: 268
Quote: 0
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Abstract


Water Environment mathematical model is used to describe the water quality factors in the effect of various factors with the mathematical expression of the time and space to change and control conditions . The study has important implications on the mathematical model parameters can be predicted through the determination of parameters , water conditions, it can make the system parameter adjustment to the desired direction of development . Therefore, how to determine the parameters of the mathematical model caused a lot of people 's attention , It is no exaggeration to say that the parameter calculation problem is not solved , you can not give a reliable parameter , prediction , and control issues will become castles in the air , even the best prediction and control methods can not solve the calculation of actual water quality problems . Therefore, both from the theoretical or actual calculation point of view , the study inversion problem is of great significance . Mathematics is the language of science , is the basis of the natural sciences and engineering technology . In the research and practice of science and technology , in order to obtain the quantitative analysis and description , using the language of mathematics , mathematical expression . The existing mature BOD-DO Water Quality Modeling . Positive problem solving numerical solution ( straight line method) solution using regular iterative method and genetic algorithm parameter inversion major genetic algorithm parameters in the mathematical model of the water environment . The first study of the parameters of water quality mathematical model of the non- steady-state BOD-DO inversion parameters inversion theory and methods , mathematical thinking , the Water Environment mathematical model parameters inversion included in the theory of inverse problems , the inversion problem for the the water Environment mathematical model parameters laid the basis of some mathematical theory . Solving the genetic algorithm theory and method introduced the Water Environment mathematical model parameters inversion , the numerical simulation and the practical application of using genetic algorithms to deal with the mathematical model of the water environment parameters inversion has good adaptability . Provides a method for solving parameter the Water Environment mathematical model . Of the various algorithms presented in this paper , the preparation of a numerical calculation program , and it is applied to the the Water Environment mathematical model parameters inversion .

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > Water Quality Assessment
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