Session: 12-04-02 Coastal Hazards - Tsunamis and Storm Surges II

Paper Number: 136484

136484 - Storm Surge Model for Singapore Strait and South China Sea Using Delft3d Fm 

Singapore is an urbanized city which has a dense population of 5.69 million people. The low-lying island country has high-density economic facilities within a few kilometers from its coastal lines. These facilities are potentially vulnerable to coastal hazards including sea level rise and storm surges. The cold surges during the northeast monsoon when coinciding with spring tides may lead to coastal floods in South China Sea region and Singapore Strait.

We developed a storm surge model for the South China Sea region with a focus on the Singapore Strait. The model is based on the open source hydrodynamic program Delft3D Flexible Mesh (Delft3D FM) developed by Deltares. The model domain covers the entire South China Sea, Malacca strait and part of the Pacific Ocean and Indian Ocean. It is capable to simulate formation and propagation of storm surge from deep seas towards coastal regions. The domain is discretized with triangle mesh with the cell size from 100km near the open boundary to 250m near the Singapore region. The mesh in the South China Sea is carefully generated to capture the islands and bathymetry changes to better resolve the water motions. The mesh size range from 20km to 10km in this region. We use ERA5 reanalysis hourly wind data at 10m height and mean sea level pressure for the region to drive the water motion. The wind drag coefficient is tuned to match past storm surge events. A storm surge on 3rd week of December 2006 is considered, where computed results are well compared with Tanjong Pagar tidal gauge measurement.

Presenting Author: Haihua Xu Technology Centre for Offshore and Marine, Singapore

Presenting Author Biography: Xu Hai Hua is an accomplished scientist with a strong background in Computational Fluid Dynamics (CFD) methods applied in offshore and marine structures. He has made significant contributions to the field of coastal hydrodynamics and wind wave modeling through his research and development work.

Xu Hai Hua earned his Ph.D. in National University of Singapore, where he gained a deep understanding of CFD methods and their application in marine and offshore structures. After completing his doctoral degree, he joined the Tropical Marine Science Institute (TMSI) in 2010. During his tenure at TMSI, he focused on coastal hydrodynamics and wind wave modeling.

Xu Hai Hua subsequently worked as a research engineer at Keppel Offshore & Marine for seven years. During this time, he focused on numerical modeling of waves and wave-structure interactions using CFD methods for marine and offshore structures.

In 2018, Xu Hai Hua joined the Technology Centre for Offshore and Marine (TCOMS) in Singapore, where he currently works as a scientist. His primary focus is on CFD modeling development and application, coastal hydrodynamics, and wind wave modeling. He has made significant contributions to the development of innovative and efficient CFD modeling techniques, which have been instrumental in advancing the field of offshore and marine engineering.

Overall, Xu Hai Hua is a highly skilled scientist with a passion for applying CFD methods to real-world problems. His expertise and contributions have been invaluable to the offshore and marine industry in Singapore and beyond

Authors:

Haihua Xu Technology Centre for Offshore and Marine, Singapore
Jeng Hei Chow Technology Centre for Offshore and Marine, Singapore
Xingkun Xu Tropical Marine Science Institute, National University of Singapore
Pavel Tkalich Technology Centre for Offshore and Marine, Singapore