Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydrodynamic Simulation in Tidal Rivers Using Fourier Series
One-dimensional (1D) hydrodynamic models based on the Saint-Venant equations (the SVN model) have been extensively used for flow simulation in tidal rivers. In rivers with significant tidal effects, the inconsistencies between actual flow characteristics and simplifying assumptions that the Saint-Venant equations are derived based on can introduce unignorable errors into the application of the SVN model. To reduce the errors contributed by the factors the SVN model can not completely account for, such as the tidal effect, an approach of incorporating a function into the calculated velocity by the SVN model was proposed in this study. Fourier series was employed to construct the function. By combining the proposed approach with the flow continuity equation, a 1D hydrodynamic model (the FSV model) was constructed to improve the performance of the SVN model in tidal rivers. The simulation results in the tidal reaches of the Qiantang River and the Changjiang River show that the FSV model performs better than the SVN model alone. It indicates that the proposed approach is reasonable and effective to reduce the errors due to the factors the SVN model can not completely considered in applications.
Hydrodynamic Simulation in Tidal Rivers Using Fourier Series
One-dimensional (1D) hydrodynamic models based on the Saint-Venant equations (the SVN model) have been extensively used for flow simulation in tidal rivers. In rivers with significant tidal effects, the inconsistencies between actual flow characteristics and simplifying assumptions that the Saint-Venant equations are derived based on can introduce unignorable errors into the application of the SVN model. To reduce the errors contributed by the factors the SVN model can not completely account for, such as the tidal effect, an approach of incorporating a function into the calculated velocity by the SVN model was proposed in this study. Fourier series was employed to construct the function. By combining the proposed approach with the flow continuity equation, a 1D hydrodynamic model (the FSV model) was constructed to improve the performance of the SVN model in tidal rivers. The simulation results in the tidal reaches of the Qiantang River and the Changjiang River show that the FSV model performs better than the SVN model alone. It indicates that the proposed approach is reasonable and effective to reduce the errors due to the factors the SVN model can not completely considered in applications.
Hydrodynamic Simulation in Tidal Rivers Using Fourier Series
Zhang, Xiaoqin (Autor:in) / Bao, Weimin (Autor:in)
Journal of Hydrologic Engineering ; 18 ; 1408-1415
15.10.2013
82013-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Hydrodynamic Simulation in Tidal Rivers Using Fourier Series
| British Library Online Contents | 2013
Hydrodynamic Simulation in Tidal Rivers Using Fourier Series
| Online Contents | 2013
Development of coupled 1-D-2-D hydrodynamic models for tidal rivers
| British Library Conference Proceedings | 2005
Hydrological simulation coupling flood and tide in tidal rivers
| British Library Conference Proceedings | 2011