Validation of Numerical Simulation of the Flow over Submarine Geometries with Full Appendages

Numerical simulation of the three-dimensional viscous flow field over the SUBOFF AFF-8 submarine model with full appendages is processed by solving RANS equations with κ-e two-equation turbulence model and finite volume method (FVM).And a so-called near-wall model,namely enhanced wall functions combined a two-layer turbulence model is applied to enable the near-wall region to be solved with a finer mesh,which is all way to the wall, including the viscous sub-layer.In the condition of Reynolds number Re=1.2×107,pressure coefficient and skin friction coefficient longitudinal distributions alone the upper meridian line,and pressure coefficient longitudinal distributions on the various height of the fairwater and stern appendages,other than wake velocities at the propeller disk plane,are given,and vortices structures shed from the fairwater and four stern appendages are observed from the velocity vectors.It shows that numerical implementations are creditable by comparing with the measured data and computed results provided by some references.This provides and effectual method of estimating design projects for the submarine conceptual design.