Correction: Combination of Discrete Element Method and Artificial Neural Network for Predicting Porosity of Gravel-Bed River. Water 2019, 11(7), 1461

Van Hieu Bui; Minh Duc Bui; Peter Rutschmann

doi:10.3390/w12020408

,

and

¹

Institute of Hydraulic and Water Resources Engineering, Technische Universität München, Arcisstrasse 21, D-80333 München, Germany

²

Faculty of Mechanical Engineering, Thuyloi University, 175 Tay Son, Dong Da, 100000 Hanoi, Vietnam

^*

Author to whom correspondence should be addressed.

Water2020, 12(2), 408;https://doi.org/10.3390/w12020408

This article belongs to the Section Hydraulics and Hydrodynamics

Version Notes

Order Reprints

We have found one error in Equation (2) (duplicate with Equation (1)) in our paper published in the Water Journal [1]:

m_{i} \frac{{d \vec{u}}_{i}}{dt} = m_{i} \vec{g} + \sum_{k} {\vec{f}}_{i, k} + {\vec{f}}_{i, f}

(1)

Equation (2) is corrected to:

I \frac{{d \vec{ω}}_{i}}{dt} = \frac{d_{i}}{2} \sum_{k} ({\vec{n}}_{i, k} \times {\vec{f}}_{i, k})

(2)

These changes have no material impact on the conclusions of our paper. We apologize to our readers.

Conflicts of Interest

The authors declare no conflict of interest.

Reference

Bui, V.H.; Bui, M.D.; Rutschmann, P. Combination of Discrete Element Method and Artificial Neural Network for Predicting Porosity of Gravel-Bed River. Water 2019, 11, 1461. [Google Scholar] [CrossRef]

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Correction: Combination of Discrete Element Method and Artificial Neural Network for Predicting Porosity of Gravel-Bed River. Water 2019, 11(7), 1461

Conflicts of Interest

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