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Frontiers of Structural and Civil Engineering

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    A novel ensemble model for predicting the performance of a novel vertical slot fishway

    . Department of Water and Environmental Engineering, School of Civil Engineering, Iran University of Science and Technology, Tehran 1684613114, Iran.. Department of Water and Environmental Engineering, School of Civil Engineering, Semnan University, Semnan 35131-19111, Iran.. Department of Water and Environmental Engineering, School of Civil Engineering, Islamic Azad University Central Tehran Branch, Tehran 1987745815, Iran.. School of Progress Engineering, Iran University of Science and Technology, Tehran 1684613114, Iran

    Received：2020-11-13 Accepted： 2020-12-30 Available online：2020-12-30
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    10.1007/s11709-020-0664-x
    Cite this article
    Aydin SHISHEGARAN, Mohammad SHOKROLLAHI, Ali MIRNOROLLAHI, Arshia SHISHEGARAN, Mohammadreza MOHAMMAD KHANI.A novel ensemble model for predicting the performance of a novel vertical slot fishway[J].Frontiers of Structural and Civil Engineering:1418-1444.

    Abstract

    We investigate the performance of a novel vertical slot fishway by employing finite volume and surrogate models. Multiple linear regression, multiple log equation regression, gene expression programming, and combinations of these models are employed to predict the maximum turbulence, maximum velocity, resting area, and water depth of the middle pool in the fishway. The statistical parameters and error terms, including the coefficient of determination, root mean square error, normalized square error, maximum positive and negative errors, and mean absolute percentage error were employed to evaluate and compare the accuracy of the models. We also conducted a parametric study. The independent variables include the opening between baffles ( ), the ratio of the length of the large and small baffles, the volume flow rate, and the angle of the large baffle. The results show that the key parameters of the maximum turbulence and velocity are the volume flow rate and .

    Keywords

    novel vertical slot fishway ; parametric study ; finite volume method ; ensemble model ; gene expression programming
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