External control and automatic calibration of the HEC-RAS NSM-I water quality model

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Authors

Diego Reginatto de Lima, Fernando Mainardi Fan , Vinicius Alencar Siqueira

Abstract

Calibration of models is a common procedure required to properly reproduce a system under analysis. In the present study, we developed a tool integrating the HEC-RAS NSM-I water quality model with the optimization algorithm SCE-UA in order to allow the automatic calibration. The tool’s performance was assessed in two experiments involving a theoretical situation, when it was used to approximate a previously known set of parameters, and a real world application, when the tool was employed to calibrate a water quality model of the Gravataí River, Brazil. The results showed a good capacity to approximate the true parameters values in the theoretical experiment and a good consistency and agreement with reference values in the second experiment. Although future testing and improvements are possible, the proposed approach can be an useful alternative in water quality modeling using HEC-RAS.

DOI

https://doi.org/10.31223/osf.io/5g83w

Subjects

Civil and Environmental Engineering, Engineering, Environmental Engineering, Hydraulic Engineering

Keywords

HEC-RAS, Model Calibration, Multiobjective-optimization, river water quality modeling

Dates

Published: 2020-03-21 23:15

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License

GNU Lesser General Public License (LGPL) 2.1

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