Background
Monthly cyclonic and non-cyclonic MetOcean criteria was required to assist the planning of marine operations at a jetty head in Laem Chabang, Thailand
Scope of Work
CA Metocean was appointed by AqualisBraemar PTE Ltd to provide the necessary MetOcean data including:
- 1, 5 and 10-year return period cyclonic and non-cyclonic extreme waves and winds for the all year and monthly omni-directional cases
Key Features
- Numerical modelling was required to reproduce the inshore conditions accurately, hence a quick modelling approach was performed to suit the project’s budget and schedule
- SWAN model was set up using readily available bathymetry, wave and wind data to simulate the local wave climate on a constant sea level
- Hybrid Downscaling approach was used to reduce computing time. CA Metocean has implemented Matlab tools to perform the analysis following methodology developed at the Hydraulic Institute of Cantabria (IH Cantabria) as follows:
- Selection of cases to be simulated using Maximum Dissimilarity Algorithm (MDA)
- Numerical simulation of selected cases using numerical wave model (SWAN)
- Calculate interpolators for the location of interest using Radial Basis Function (RBF) and results from numerical model simulation
- Re-construct wave timeseries at location of interest and perform required analysis
- Cyclone extremes were derived using parametric models
- Numerical modelling of the most severe cyclone affecting the interest location was also carried out. SWAN was forced with time and space varying wind maps derived by applying Willoughby parametric model to IBTrACS information of cyclone’s track.
