skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms

Abstract

Here, this paper presents novel flux and source term treatments within a Godunov-type finite volume framework for predicting the depth-averaged shallow water flow and sediment transport with enhanced the accuracy and stability. The suspended load ratio is introduced to differentiate between the advection of the suspended load and the advection of water. A modified Harten, Lax and van Leer Riemann solver with the contact wave restored (HLLC) is derived for the flux calculation based on the new wave pattern involving the suspended load ratio. The source term calculation is enhanced by means of a novel splitting-point implicit discretization. The slope effect is introduced by modifying the critical shear stress, with two treatments being discussed. The numerical scheme is tested in five examples that comprise both fixed and movable beds. The model predictions show good agreement with measurement, except for cases where local three-dimensional effects dominate.

Authors:
 [1];  [2];  [3];  [4];  [1]
  1. Technische Univ. Berlin (Germany)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Geosciences Division
  3. Univ. of Cambridge, Cambridge (United Kingdom)
  4. Technische Univ. Berlin (Germany); Xi’an Univ. of Technology, Xi’an (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); China Scholarship Council; Technische Univ. Berlin
OSTI Identifier:
1580381
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Hydrology
Additional Journal Information:
Journal Volume: 570; Journal Issue: C; Journal ID: ISSN 0022-1694
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Zhao, Jiaheng, Özgen-Xian, Ilhan, Liang, Dongfang, Wang, Tian, and Hinkelmann, Reinhard. A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms. United States: N. p., 2019. Web. doi:10.1016/j.jhydrol.2018.12.059.
Zhao, Jiaheng, Özgen-Xian, Ilhan, Liang, Dongfang, Wang, Tian, & Hinkelmann, Reinhard. A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms. United States. doi:10.1016/j.jhydrol.2018.12.059.
Zhao, Jiaheng, Özgen-Xian, Ilhan, Liang, Dongfang, Wang, Tian, and Hinkelmann, Reinhard. Mon . "A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms". United States. doi:10.1016/j.jhydrol.2018.12.059. https://www.osti.gov/servlets/purl/1580381.
@article{osti_1580381,
title = {A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms},
author = {Zhao, Jiaheng and Özgen-Xian, Ilhan and Liang, Dongfang and Wang, Tian and Hinkelmann, Reinhard},
abstractNote = {Here, this paper presents novel flux and source term treatments within a Godunov-type finite volume framework for predicting the depth-averaged shallow water flow and sediment transport with enhanced the accuracy and stability. The suspended load ratio is introduced to differentiate between the advection of the suspended load and the advection of water. A modified Harten, Lax and van Leer Riemann solver with the contact wave restored (HLLC) is derived for the flux calculation based on the new wave pattern involving the suspended load ratio. The source term calculation is enhanced by means of a novel splitting-point implicit discretization. The slope effect is introduced by modifying the critical shear stress, with two treatments being discussed. The numerical scheme is tested in five examples that comprise both fixed and movable beds. The model predictions show good agreement with measurement, except for cases where local three-dimensional effects dominate.},
doi = {10.1016/j.jhydrol.2018.12.059},
journal = {Journal of Hydrology},
number = C,
volume = 570,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: