PIV Measurements of the Cross-Flow Velocity Field Around a Turning Submarine Model (ONR Body-1). Part 1. Experimental Setup.

摘要

Particle Image Velocimetry (PIV), a quantitative flow visualization technique, was utilized to characterize the flow field around a sting-mounted captive model in a steady turn. The submarine model (ONR Body-I) was also instrumented with block gages, yielding force and moment data in tandem with the detailed map of the cross-flow velocity field. The near wake flow field is observed to be dominated by complex interactions of large-scale vortical structures from the hull separated flow and the tip vortices from the sail and various control surfaces. In addition, the incorporation of micro-vortex generators (MVGs) on the submarine model is shown to have significant effects on the flow field and the resulting forces and moments on the submarine model.