Abstract
A computational study of slender axisymmetric bodies with tapered tails undergoing steady turning manoeuvres is presented. The computational modeling is based on the Reynolds Average Navier Stokes (RANS) equations and uses a novel hybrid meshing scheme designed to accurately resolve near field viscous flow features through systematic grid refinement. Turns with a range of radii 1.0<R/ℓ<10.0, and drift angles 1°<β<17°, are studied for the DRDC STR, SUBOFF, and Series 58 model submarine hulls. Detailed results for surface skin friction lines, flow separation and leeside vortex development together with longitudinal lateral force distributions and total forces and moments on the body are described. Partial validation of the computational modeling is achieved by comparison of total forces and moments to experimental data for turning radii R/ℓ=2.74±0.04 and a range of drift angles, 3.8°<β<16.5°.
Published Version
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