Airflow over the R.R.S. Discovery using the Computational Fluid Dynamics package Vectis

This report describes the use of the Computational Fluid Dynamics software "Vectis" for studying the air flow around ships. Measurements of wind speed obtained from ship-borne instruments can be subject to systematic errors, caused by the disturbance of the air flow by the ship's hull and superstructure. The use of the "Vectis" software is described for a simulation of the air flow over the R.R.S. Discovery. The magnitude of the wind speed error is calculated for an anemometer sited on the foremast platform of the ship.