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A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks

1
School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China
2
Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
3
Hubei Provincial Research Institute of Environmental Science, Wuhan 430072, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(3), 437; https://doi.org/10.3390/w11030437
Received: 4 February 2019 / Revised: 23 February 2019 / Accepted: 25 February 2019 / Published: 28 February 2019
(This article belongs to the Section Hydraulics)
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PDF [2613 KB, uploaded 28 February 2019]
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Abstract

High-precision and efficiently distributed discrete element models for water environment simulation are urgently needed in large-scale river network areas, but most distributed discrete element models are serially computed and need performance improving. Parallel computing and other common methods for models’ high performance have large labor costs and are complicated. We put forward a new mesh reduced method for promoting computational efficiency with grid re-organization according to the structure and algorithm characteristics of 2D and 3D numerical models. This simple and cheap method was adapted to a classical three-dimensional hydrodynamic and sediment model (ECOMSED) for model improvement and effective evaluation. Six schemes with different grids were made to investigate the performance of this method in the river network area of the Three Gorges Reservoir Basin. It showed good characteristics of simulation performance and model speed-up. We concluded that the method is viable and efficient for optimizing distributed discrete element models. View Full-Text
Keywords: mesh reduced method; structured grid; discrete element models; large-scale river network; Three Gorges Reservoir Basin mesh reduced method; structured grid; discrete element models; large-scale river network; Three Gorges Reservoir Basin
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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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Kang, J.; Wang, Y.; Xu, J.; Yang, S.; Hou, H. A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks. Water 2019, 11, 437.

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