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

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 f...

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Main Authors: Jin Kang, Yonggui Wang, Jing Xu, Shuihua Yang, Haobo Hou
Format: Article
Language:English
Published: MDPI AG 2019-02-01
Series:Water
Subjects:
Online Access:http://www.mdpi.com/2073-4441/11/3/437
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spelling doaj-d2446f5ce9bb40a4963a6fe923e393232020-11-24T21:20:53ZengMDPI AGWater2073-44412019-02-0111343710.3390/w11030437w11030437A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River NetworksJin Kang0Yonggui Wang1Jing Xu2Shuihua Yang3Haobo Hou4School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaHubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaHubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaHubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan 430074, ChinaSchool of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, ChinaHigh-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.http://www.mdpi.com/2073-4441/11/3/437mesh reduced methodstructured griddiscrete element modelslarge-scale river networkThree Gorges Reservoir Basin
collection DOAJ
language English
format Article
sources DOAJ
author Jin Kang
Yonggui Wang
Jing Xu
Shuihua Yang
Haobo Hou
spellingShingle Jin Kang
Yonggui Wang
Jing Xu
Shuihua Yang
Haobo Hou
A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
Water
mesh reduced method
structured grid
discrete element models
large-scale river network
Three Gorges Reservoir Basin
author_facet Jin Kang
Yonggui Wang
Jing Xu
Shuihua Yang
Haobo Hou
author_sort Jin Kang
title A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
title_short A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
title_full A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
title_fullStr A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
title_full_unstemmed A Mesh Reduced Method for Speeding Up Structured Grid-Based Water Quantity and Quality Models in Large-Scale River Networks
title_sort mesh reduced method for speeding up structured grid-based water quantity and quality models in large-scale river networks
publisher MDPI AG
series Water
issn 2073-4441
publishDate 2019-02-01
description 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.
topic mesh reduced method
structured grid
discrete element models
large-scale river network
Three Gorges Reservoir Basin
url http://www.mdpi.com/2073-4441/11/3/437
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