Three dimensional hydrodynamic modeling over bed forms in open channels

Three dimensional numerical modeling ofidealized sand dunes was used to assess the capability of various modeling formulations to capture the flow structure and resistance introduced by bed forms which are similar to those in the Lower Mississippi River. The selected models were： ECOMSED （HydroQual）...

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Bibliographic Details
Published in:International journal of sediment research 2010-12, Vol.25 (4), p.431-440
Main Authors: KHEIASHY, K. EL, MCCORQUODALE, J., GEORGIOU, I., MESELHE, E.
Format: Article
Language:English
Subjects:
Alluvial rivers
Bed forms
Channels
Computational fluid dynamics
Dunes
Fluid flow
Freshwater
Hydrodynamics
Hydrostatics
Mathematical models
Mississippi river
Rivers
Three dimensional models
三维数值模拟
密西西比河
水动力模型
洪峰流量
流场结构
研究所
非静力模式
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Summary:Three dimensional numerical modeling ofidealized sand dunes was used to assess the capability of various modeling formulations to capture the flow structure and resistance introduced by bed forms which are similar to those in the Lower Mississippi River. The selected models were： ECOMSED （HydroQual）, MIKE 3 [Danish Hydraulic Institute （DHI）] and H3D （Hayco）. The study revealed that the hydrostatic versions of models did not capture the flow separation at the crest of the dunes; however, they did respond to the presence of bed forms and gave a total resistance similar to the nonhydrostatic models.
ISSN:1001-6279
DOI:10.1016/S1001-6279(11)60010-3