Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Three-Dimensional Unsteady Method for Simulating River Flows
Natural river flows are mostly unsteady in nature due to seasonal variation of flow discharge and controlled operation of hydraulic structures. Often this unsteadiness leads to complex flow pattern changes and the flow characteristics may be quite different from that of steady-state flows. Unsteadiness is particularly important during flooding events and when submerged islands exist immediately upstream or downstream of hydraulic structures. In the past, however, unsteadiness has not been modeled in most projects involving fully three-dimensional computational fluid dynamic modeling. The purpose of this paper is to address the issue of unsteadiness in the context of fully three-dimensional numerical modeling. Particularly, effort is directed at developing the unsteady capability associated with the wetting and drying processes for a reach of a natural river. Validation and application were performed with a forebay reach of the Columbia River at the Rock Island Dam. The computational results are reported and discussed.
A Three-Dimensional Unsteady Method for Simulating River Flows
Natural river flows are mostly unsteady in nature due to seasonal variation of flow discharge and controlled operation of hydraulic structures. Often this unsteadiness leads to complex flow pattern changes and the flow characteristics may be quite different from that of steady-state flows. Unsteadiness is particularly important during flooding events and when submerged islands exist immediately upstream or downstream of hydraulic structures. In the past, however, unsteadiness has not been modeled in most projects involving fully three-dimensional computational fluid dynamic modeling. The purpose of this paper is to address the issue of unsteadiness in the context of fully three-dimensional numerical modeling. Particularly, effort is directed at developing the unsteady capability associated with the wetting and drying processes for a reach of a natural river. Validation and application were performed with a forebay reach of the Columbia River at the Rock Island Dam. The computational results are reported and discussed.
A Three-Dimensional Unsteady Method for Simulating River Flows
Lai, Yong G. (Autor:in) / Weber, Larry J. (Autor:in) / Moedinger, Jens (Autor:in)
World Water and Environmental Resources Congress 2001 ; 2001 ; The Rosen Plaza Hotel, Orlando, Florida, United States
Bridging the Gap ; 1-10
15.05.2001
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Numerical Model for Simulating Two Dimensional Unsteady Flows in Irregular Flow Domain
| Springer Verlag | 2024
Numerical Model for Simulating Two Dimensional Unsteady Flows in Irregular Flow Domain
| Springer Verlag | 2024
River Transport Modeling for Unsteady Flows
| ASCE | 2021
Robustness of De Saint Venant Equations for Simulating Unsteady Flows
| British Library Conference Proceedings | 1995
Three-dimensional simulation of river flood flows
| British Library Conference Proceedings | 2001