Directional Stability Study of Torpedo Anchors

Abstract

After a torpedo anchor is released into water during its installation, the directional stability of this anchor is an important factor for its penetration performance. In this paper, a CFD method is used to simulate the falling behavior of the anchor, and detailed parametric studies are conducted to analyze the effects of various parameters to the directional stability. The results show that some parameters like weight, gravity center, and aspect ratio of fin have significant influence on the directional stability.

An innovative booster-assisted dynamically installed fish anchor and its installation characteristics considering the action of ocean currents

“…Current studies on the hydrodynamic characteristics of DIAs are mainly conducted through field tests (e.g., Medeiros, 2002;Brandao et al, 2006;Shelton, 2007;and O'Beirne et al, 2017), physical model experiments (e.g., O'Loughlin et al, 2004Hasanloo et al, 2012;and Raaj et al, 2022), and numerical simulations. Among these approaches, numerical research can be further categorized into static model analysis methods (e.g., Richardson, 2008;Raie, 2009;Silva, 2010;Soh et al, 2017;Liu et al, 2019;and Sun and Liu, 2022) and dynamic model analysis methods (e.g., Raie, 2009;Li et al, 2014;and Zhang et al, 2024). The principle of the static model analysis method involves fixing the anchor in position and subjecting it to fluid attack at a predetermined speed within the calculation domain, enabling determination of the drag force acting on the anchor.…”