Analysis of the Submarine Appendage Flow Field
Abstract
The corner vortex originating in the hull-sail intersection region is an important component of the submarine flow field. The vortex may play a major role in overall drag, wake development and propeller performance, and may be a major acoustic source. The flow itself is complex, being three-dimensional, viscous and turbulent. Earlier work computed the flow field around the hull and the sail. The present report focuses on the portion of the flow in the hull-sail corner downstream of the sail leading edge. The paper first details the analysis which is based upon a three-dimensional, viscous, spatial forward marching approach. The solution procedure which is based upon ADI techniques is described. A comparison with the turbulent flow data of McMahon, Hubbartt and Kubendran (1983)is presented. The computer code used to run these calculations has been transmitted to the NRL Cray computer. A user's manual for this code including sample input and output has been forwarded to David Taylor Research Center. Keywords: Submarine hulls; Submarine sails; Three-dimensional viscous flow; Turbulent flow; Vortices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1988
- Accession Number
- ADA212344
Entities
People
- Ralph Levy