Three dimensional hydrodynamic modeling over bed forms in open channels |
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| Authors: | K. EL KHEIASHY J. MCCORQUODALE I. GEORGIOU E. MESELHE |
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| Affiliation: | 1. Principal Engineer, Project Manager, Kellogg Brown and Root Inc. (KBR), 4100 Clinton Drive 03-1130, Houston, TX 77020, USA;2. Prof., Civil and Environmental Engineering Department, University of New Orleans, New Orleans, LA 70148, USA;3. Assis. Prof., Earth and Environmental Sciences Department, University of New Orleans, New Orleans, LA 70148, USA;4. Prof., Civil Engineering Department, University of Louisiana at Lafayette, Lafayette, LA 70504, USA |
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| Abstract: | Three dimensional numerical modeling of idealized 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 non-hydrostatic models. |
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