JOURNAL OF ETA MARITIME SCIENCE, vol.11, no.3, pp.137-147, 2023 (ESCI)
In this study, the maneuvering forces and moments of the DARPA Suboff submarine model were determined under static drift condition
using computational fluid dynamics (CFD) methods. Two different configurations of the submarine model namely; the AFF-3 configuration,
which consists of bare hull and four stern rudders, and the fully appended configuration AFF-8, which is formed from bare hull, sail, and
four stern rudders, have been used. Initially, for the AFF-3 configuration, a mesh independence study has been conducted. Three different
cases; coarse, medium and fine meshes are investigated at small angles (0-2-4-6 degrees). After that the results have been verified, the
medium mesh structure has been selected and the analyzes have been continued for larger angles (from 00 to 180 degrees). The accuracy
of the obtained results was assessed by comparing them with non-dimensional experimental results. The comparison between the CFD
results and the experimental results demonstrated a high level of agreement, indicating the effectiveness and accuracy of the CFD methods
used in this study. After the validation studies, the maneuvering forces and moments of the AFF-8 fully appended configuration were
calculated for which no prior experimental data existed in the literature. To achieve this, steady-state CFD simulations were performed
using the commercial software ANSYS Fluent, and the results were presented for the same flow angles.