Title :
Numerical investigation of water-entry of a hemisphere cylinder used for micro-communication sonobuoy casing
Author :
JianKang Li ; Anvar, Amir
Author_Institution :
Sch. of Mech. Eng., Univ. of Adelaide, Adelaide, SA, Australia
Abstract :
The purpose of this paper is to present the investigation of impact pressure acting on the hemisphere cylinder when it hits the water. In this paper, a two-dimensional hemisphere cylinder is built to simulate the water-entry problem. The model enters into the calm water verticals with initial velocity in y-direction at 10m/s. The transient flow simulation is carried out using Fluent k-£ turbulent model, dynamic mesh method and 6DOF solver. The volume of fluid (VOF) and user defined function are utilized to track the free-surface and the trajectory of the impacting hemisphere cylinder. The pressure and velocity distribution is investigated. The results show the Fluent k-£ turbulent model can predict the pressure distribution on the hemisphere cylinder accurately.
Keywords :
atmospheric techniques; atmospheric turbulence; computerised instrumentation; flow simulation; geophysics computing; 6DOF solver; Fluent k-£ turbulent model; dynamic mesh method; micro-communication sonobuoy casing; transient flow simulation; two-dimensional hemisphere cylinder; user defined function; volume of fluid; water-entry numerical investigation; Abstracts; Automation; Boundary conditions; Conferences; Equations; Mathematical model; Robots; Dynamic Mesh; Hemisphere Cylinder; Impact Pressure; UDF; VOF;
Conference_Titel :
Control Automation Robotics & Vision (ICARCV), 2014 13th International Conference on
DOI :
10.1109/ICARCV.2014.7064400