Fundamental CFD Study on the Hydrodynamic Performance of the DARPA SUBOFF Submarine

This study attempts to examine the potential for computational fluid dynamics (CFD) as an estimation tool of the hydrodynamic performance of submarines. The DARPA SUBOFF model is adopted as a benchmark because of its availability of experimental data for validation. The computational modeling is based on the Reynolds Average Navier Stokes (RANS) equations solved by a finite volume method. Verification and validation of the straight-ahead resistance and the forces and moment exerted on the hull in steady translation and turn with a drift angle were conducted in accordance with the published methodology and procedure. The process to have determined the computational setups is described. Furthermore, the computational results as a function of velocity and drift angle are presented and compared with available experimental data. In conclusion, the present CFD method can be used as an estimation tool for the straight-ahead resistance at various velocities in model scale for multiple configurations.