A depthaveraged noncohesive sediment transport model with improved discretization of flux and source terms
Abstract
Here, this paper presents novel flux and source term treatments within a Godunovtype finite volume framework for predicting the depthaveraged 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 splittingpoint 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 threedimensional effects dominate.
 Authors:

 Technische Univ. Berlin (Germany)
 Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Geosciences Division
 Univ. of Cambridge, Cambridge (United Kingdom)
 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:
 AC0205CH11231
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Journal of Hydrology
 Additional Journal Information:
 Journal Volume: 570; Journal Issue: C; Journal ID: ISSN 00221694
 Publisher:
 Elsevier
 Country of Publication:
 United States
 Language:
 English
 Subject:
 58 GEOSCIENCES
Citation Formats
Zhao, Jiaheng, ÖzgenXian, Ilhan, Liang, Dongfang, Wang, Tian, and Hinkelmann, Reinhard. A depthaveraged noncohesive 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, ÖzgenXian, Ilhan, Liang, Dongfang, Wang, Tian, & Hinkelmann, Reinhard. A depthaveraged noncohesive sediment transport model with improved discretization of flux and source terms. United States. doi:10.1016/j.jhydrol.2018.12.059.
Zhao, Jiaheng, ÖzgenXian, Ilhan, Liang, Dongfang, Wang, Tian, and Hinkelmann, Reinhard. Mon .
"A depthaveraged noncohesive 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 depthaveraged noncohesive sediment transport model with improved discretization of flux and source terms},
author = {Zhao, Jiaheng and ÖzgenXian, Ilhan and Liang, Dongfang and Wang, Tian and Hinkelmann, Reinhard},
abstractNote = {Here, this paper presents novel flux and source term treatments within a Godunovtype finite volume framework for predicting the depthaveraged 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 splittingpoint 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 threedimensional 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}
}