IMECH-IR  > 环境力学重点实验室(2009-2011)
 A general two-phase turbulent flow model applied to the study of sediment transport in open channels Chen X; Li Y(李勇); Niu XJ; Li M; Chen DY; Yu XP; Yu, XP (reprint author), Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China Source Publication International Journal of Multiphase Flow 2011 Volume 37Issue:9Pages:1099-1108 ISSN 0301-9322 Abstract A numerical model for the general description of the sediment-laden flow is developed based on an Euler-Euler approach of the two-phase turbulent flow theory. The basic equations of the model are the Reynolds averaged equations of motion for both the fluid and the sediment phase in addition to the Reynolds averaged continuity equations for the mixture and for the sediment phase. The fluid phase and the sediment phase are coupled through their interaction forces including resistance force, inertia force, and lift force. Turbulence closure of the fluid phase is based on the conventional k-epsilon model while an algebraic particle turbulence model is applied to the sediment phase. The numerical method is based on the modified SIMPLE scheme. The model is applied to the computation of saturated sediment-laden flows and also the non-equilibrium transport of sediment by unidirectional flows under simple erosion and simple deposition conditions. The numerical results are well verified by the available experimental data. The vertical velocity of the sediment phase is also shown to be in very good agreement with the fall velocity of the sediment particles, which strongly support the assumption of Rouse's diffusion theory for suspended sediment under steady state. (C) 2011 Elsevier Ltd. All rights reserved. Keyword Two-phase Flow Sediment Transport Numerical Model Model Verification Suspended-sediment Mathematical-model Rotational Flow Sheet Flow Particles Force Laden Body Beds Subject Area Mechanics DOI 10.1016/j.ijmultiphaseflow.2011.05.013 URL 查看原文 Indexed By SCI ; EI Language 英语 WOS ID WOS:000295242200009 WOS Keyword SUSPENDED-SEDIMENT ; MATHEMATICAL-MODEL ; ROTATIONAL FLOW ; SHEET FLOW ; PARTICLES ; FORCE ; LADEN ; BODY ; BEDS WOS Research Area Mechanics WOS Subject Mechanics Funding Organization This work was partially supported by State Key Laboratory of Hydroscience and Engineering, MOST, China under Grant No. 2011-KY-1 and by Natural Science Foundation of China (NSFC) under Grant No. 10772099. The first author also thanks China Scholarship Council (CSC) for providing him an opportunity to visit School of Engineering, University of Liverpool, UK for 1 year, and he would also like to thank Mrs. Martin Grace at University of Liverpool for her kind help during his stay in UK. Department LMFS海洋环境与工程(LEM) Classification 二类 Citation statistics Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS] Document Type 期刊论文 Identifier http://dspace.imech.ac.cn/handle/311007/44995 Collection 环境力学重点实验室(2009-2011) Corresponding Author Yu, XP (reprint author), Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China Recommended CitationGB/T 7714 Chen X,Li Y,Niu XJ,et al. A general two-phase turbulent flow model applied to the study of sediment transport in open channels[J]. International Journal of Multiphase Flow,2011,37(9):1099-1108. APA Chen X.,Li Y.,Niu XJ.,Li M.,Chen DY.,...&Yu, XP .(2011).A general two-phase turbulent flow model applied to the study of sediment transport in open channels.International Journal of Multiphase Flow,37(9),1099-1108. MLA Chen X,et al."A general two-phase turbulent flow model applied to the study of sediment transport in open channels".International Journal of Multiphase Flow 37.9(2011):1099-1108.