原文传递
Prediction of the Hydrodynamic Loads on a Full-Scale Caisson at High Reynolds Number
| 题名： | Prediction of the Hydrodynamic Loads on a Full-Scale Caisson at High Reynolds Number |
| 正文语种： | eng |
| 作者： | Yanwei Niu;Bassam A. Younis |
| 作者单位： | Chang’an Univ.;Univ. of California |
| 关键词： | Full-scale caisson;Turbulence modeling;Large-eddy simulations;Flow control;Vortex shedding |
| 摘要： | Abstract The paper reports on the computation of the hydrodynamic loads on a full-scale caisson at high Reynolds number in the presence of vortex shedding. The objective was to obtain reliable predictions of the resulting mean and fluctuating forces to guide the design of an actual caisson in the absence of relevant experimental data. A further objective was to investigate the effectiveness of alternative methods for the control of vortex shedding that can be implemented in practice. Two such methods were evaluated: (1) by rounding the corners of the rectangular-sectioned caisson, and (2) by the placement of a splitter plate in the separated wake region. The computations, which were performed using the OpenFOAM open-source software, were for a fixed caisson and hence did not account for motions due to vortex-induced vibrations. The effects of turbulence were accounted for by performing large-eddy simulations, and by using two-equation eddy-viscosity closures, one of which was specifically adapted to account for the interactions between the periodic vortex shedding and the random turbulence. The numerical accuracy was checked using the grid convergence index method, and the computations were extensively validated against data from relevant benchmark flows. The recommendations of this research were implemented in the design of a full-scale caisson that has since been deployed in a bridge construction project. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 6 |
| 页码： | 1.1-1.15 |
相关文献
- Nonlinear Hydrodynamics of a Floating Cylinder in Oscillatory Flow Alone and Combined with a Current
- Investigation of the Aerodynamic Forces on a 600-m-High Supertall Building by Field Measurements and Wind Tunnel Test
- Vision-Based Modal Survey of Civil Infrastructure Using Unmanned Aerial Vehicles
- Thermomechanical Response of Profiled Metal-Faced Insulating Sandwich Panels: Testing and Analysis
- Development of Suitable Test Methods for the Screw Connections in Cold-Formed Steel Roof Battens
- Hydrogen engines for production in 2025
检索历史
应用推荐
