전산유체역학을 이용한 수중 예인운동체 자세안정화를 위한 파라미터 연구

다국어 초록 (Multilingual Abstract)

A towed underwater body is connected to a towing vessel by a cable and operated for underwater investigation. The shape of the towed underwater body is consisted of the upper and lower hemisphere on a cylindrical body. An anti-reversing pin is positioned on the behind of the body to reduce yaw and sway motions and two guide vanes are positioned to reduce yaw, pitch and sway motions. OpenFOAM was used for computational studies. For the validation of numerical methods, the fluid flow around a sphere was simulated by computational fluid dynamics (CFD). The predicted drag force of a sphere was compared with the experimental data. A parameter study for various towed speeds, guide vane area, and guide vane located angle, was carried out using selected numerical methods. The forces and moments acting on the one guide vane were compared for various parameters.