A two-phase model for fast geomorphic shallow flows

作     者：Massimo GRECO Michele IERVOLINO Angelo LEOPARDI Andrea VACCA 

作者机构：Dipartimento di Ingegneria IdraulicaGeotecnica ed Ambientale-Universita di Napoli “Federico Ⅱ”via Claudio 21-80125 NapoliITALY Prof. Dipartimento di Ingegneria Civile e Meccanica-Universita di Cassino e del Lazio Meridionalevia Di Biasio 43-03043 Cassino(FR)ITALY Assis.Prof.Dr.  4. Dipartimento di Ingegneria Civile-Seconda Universita di Napolivia Roma 29-81031 Aversa(CE)ITALY Assoc.Prof.Dr. Dipartimento di Ingegneria Civile-Seconda Universita di Napolivia Roma 29-81031 Aversa(CE)ITALY Assis.Prof.Dr. 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2012年第27卷第4期

页      面：409-425页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 081501[工学-水文学及水资源] 0903[农学-农业资源与环境] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 

主　　题：Morphodynamic model Non-equilibrium sediment transport Two-phase shallow-water model Eigenvalues analysis Dam-break flows 

摘      要：The paper introduces a 2D shallow water model based on a two-phase formulation for the analysis of fast geomorphic transients occurring in the context of river *** and momentum conservation principles are separately imposed for both *** model naturally accounts for non-equilibrium solid transport,since neither instantaneous adaptation hypothesis nor any lag equation is employed to represent sediment *** hyperbolic character of the proposed model is shown to be preserved independently on the flow *** from numerical simulations of both 1D and 2D test-cases are compared with literature experimental data and with available numerical solutions.