Tidal stream atlas of the stratified currents near Hong Kong Stonecutters Bridge
| Period: | 05/2006-03/2007 |
|---|---|
| Location: | Hong Kong |
| Client: | Maeda-Hitachi-Yokogawa-Hsin Chong JV |
assignment/short description
The Stonecutters Bridge in Hong Kong is one of the world’s longest cable stayed bridges and crosses the Rambler Channel’s entrance, which is the access for ships to the busy Kwai Tsing Container Port. Construction works of the Stonecutters Bridge involve bridge deck lift operations with dynamically positioned barges. Nautical simulations for marine safety assessment during construction and the programming of the bridge deck lift operations require reliable predictions of the local currents. To that purpose, we designed a detailed hydrodynamic Delft3D-FLOW model for simulating three-dimensional stratified tidal flow and larger scale eddy-dynamics using Horizontal Large Eddy Simulation (HLES). Based on tidal analysis of the model results, predictions for the water levels and currents could be made that include the complex flow patterns and (tidally driven) eddies and recirculations. For easy prediction of the flow conditions by the Client, independent of the Delft3D-FLOW model, a digital tidal stream atlas (Delft-STREAM) was set up that is capable of predicting these detailed flow fields for nautical and construction planning purposes.
