수질모형의 매개변수 자동보정 프로그램 개발에 관한 연구

Abstract

Water quality simulation models include the difference between the measured and estimatedvalues as an inevitable consequence because they represent the complicated naturalphenomena as simplified mathematical equations. The major reason of the differenceoccurrence is due to the use of the imprecise values of the model parameters, but the parametervalues are currently determined by the try and error method directly performed by humans.However, the use of this method requires many time and endeavor of humans, and generallydoes not obtain the most suitable parameter values. A method for deciding model parametervalues is, therefore, developed in this study. The method minimizes the difference between themeasured and estimated values and also distributes uniformly the measured values on theupper and lower sides of the line representing the estimated values. A user interface based onthis method is also developed by using the Visual Basic 6.0 of Microsoft, and it can be operatedin the environment of Windows 98/2000.In this study, the method for deciding model parameter values is applied for estimating thewater quality of the stream Ko-heung. The results of the application show that the method,including its computer program, can effectively obtain the most suitable parameter values andalso save many working time in comparison with the existing method directly performed byhumans.