Experimental and numerical study of a generic conventional submarine at 10° yaw

• Published in: Ocean engineering 2016-04, Vol.116, p.1-20
• Main Authors: Fureby, C., Anderson, B., Clarke, D., Erm, L., Henbest, S., Giacobello, M., Jones, D., Nguyen, M., Johansson, M., Jones, M., Kumar, C., Lee, S.-K., Manovski, P., Norrison, D., Petterson, K., Seil, G., Woodyatt, B., Zhu, S.
• Format: Article
• Language: English
• Subjects: Experiments; Joubert submarine model; Large Eddy Simulation (LES); Reciprocal validation; Reynolds Averaged Navier Stokes (RANS)
• ISSN: 0029-8018; 1873-5258
• DOI: 10.1016/j.oceaneng.2016.01.001

This investigation discusses the flow physics of the fully appended DSTO generic submarine model at both straight ahead conditions and during a 10° side-slip. Reynolds Averaged Navier Stokes (RANS) and Large Eddy Simulation (LES) computations have been performed and are compared with model-scale experiments. The experiments have been carried out in the DSTO Low-Speed Wind Tunnel, with data collected using pressure probes, Particle Image Velocimetry (PIV) and flow visualization using wool-tuft streamers. Computational studies using LES on unstructured meshes of up to 340 million cells provide detailed surface and off-body flow field data, complementing the experimental investigations and providing the opportunity for reciprocal validation of experiments and computations. Surface-flow patterns for the DSTO generic submarine model at 10° yaw and a freestream Reynolds (Re) number, based on wind tunnel speed and hull length, of Re=4.5×106 were obtained. The cross-stream velocity for the DSTO generic submarine model at 10° yaw and Re=2.7×106 was measured using PIV. The in-plane velocity was measured at three streamwise locations corresponding to 65%, 84% and 98% of the submarine model length. LES computations were performed using an incompressible LES flow solver developed using OpenFOAM and unstructured tetrahedral grids generated utilizing a patch-based approach to facilitate high near-wall resolutions and arbitrary refinement for appendage wakes. •Experimental study of a generic submarine hull at both straight ahead and at 10° yaw.•Computational (using both RANS and LES) study of a generic submarine hull at both straight ahead and at 10° yaw.•Experimental data and RANS and LES results provide reciprocal validation.•New information about the key flow physics at both straight ahead and at 10° yaw.•Results have strong implications of hull design and maneuvering.