Author(s): Steve Scott; Yafei Jia; Sam S. Y. Wang

Linked Author(s): Sam S.Y. Wang, Yafei Jia

Keywords: Numerical modeling; Simulation; Verification; Naturalriver

Abstract: More and more 3D numerical hydrodynamic models have been applied to hydraulic research and engineering design studies, due to the fact that numerical modeling is more cost effective. However, questions have been raised about the uncertainties of the numerical models' applicability to investigate real world problems, even if these models have been verified by using rigorous approaches. This paper presents a validation test of a three dimensional numerical model, CCHE3D, using 3D field data measured in the Mississippi River. The numerical study is focused on a curved channel reach, Victoria Bendway, in which many submerged dikes were constructed to improve the channel navigation condition. To support the study, 3D velocity data were collected using ADCP across the channel. The CCHE3D model was applied to study the secondary flow and investigate the effectiveness of these submerged weirs for improving navigation. The simulated flow field and the measured data showed good agreement, thus the model's applicability to simulate natural river processes was confirmed.

DOI:

Year: 2001