Hydrodynamic and Flow Noise Analysis of Floating Underwater Anchored Platform

Abstract

Floating underwater anchored platform can be utilized to measure the ocean physical parameters such as current velocity, sound velocity, temperature and salinity. In order to analyze the hydrodynamic interference of floating underwater anchored platform with airfoil section under different current conditions, the flow field distribution and acoustic analysis of the platform structure with four different airfoil sections are simulated and compared. The calculated results including flow velocity, dynamic pressure and flow noise varied around the buoy body are simulated with FLUENT software to obtain the optimized structure with the least disturbance on the flow field. It's concluded that increasing the axial length of platform body section in the same cross-sectional diameter will decrease the flow interference. Hence, the platform body with cross-section of NACA 2424 has the less interference caused by the surrounding current variant on the premise that the airfoil section can satisfy the structural and engineering requirements.1