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Water 2017, 9(9), 639; https://doi.org/10.3390/w9090639

Simulink Implementation of a Hydrologic Model: A Tank Model Case Study

1
Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
2
Department of Agricultural and Biological Engineering and Tropical Research and Education Center, University of Florida, Homestead, FL 33186, USA
3
Climate Application Department, APEC Climate Center, Busan 48058, Korea
4
National Institute of Agriculture Science, Rural Development Administration, Wanju, Jeollabuk-do 55365, Korea
5
Department of Rural Systems Engineering, Research Institute for Agriculture and Life Sciences, Institute of Green Bio Science and Technology, Seoul National University, Seoul 08826, Korea
*
Author to whom correspondence should be addressed.
Received: 15 June 2017 / Revised: 19 August 2017 / Accepted: 22 August 2017 / Published: 25 August 2017
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Abstract

Simulink, an extension of MATLAB, is a graphics-based model development environment for system modeling and simulation. Simulink’s user-friendly features, including block (data process) and arrow (data transfer) objects, a large number of existing blocks, no need to write codes, and a drag and drop interface, provide modelers with an easy development environment. In this study, a Tank model was developed using Simulink and applied to a rainfall-runoff simulation for a study watershed to demonstrate the potential of Simulink as a tool for hydrological analysis. In the example given here, the Tank model was extended by two sub-modules representing evapotranspiration and storage-runoff distribution. In addition, model pre- and post-processing, such as input data preparation and results plotting, was carried out in MATLAB. Moreover, model parameters were calibrated using MATLAB optimization tools without any additional programming for linking the calibration algorithms and the model. The graphical representation utilized in the Simulink version of the Tank model helped us to understand the hydrological interactions described in the model, and the modular structure of the program facilitated the addition of new modules and the modification of existing modules as needed. From the study, we found that Simulink could be a useful and convenient environment for hydrological analysis and model development. View Full-Text
Keywords: Simulink; Tank model; Rainfall-runoff modeling; Modeling dynamic systems; Modeling framework Simulink; Tank model; Rainfall-runoff modeling; Modeling dynamic systems; Modeling framework
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Song, J.-H.; Her, Y.; Park, J.; Lee, K.-D.; Kang, M.-S. Simulink Implementation of a Hydrologic Model: A Tank Model Case Study. Water 2017, 9, 639.

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