Being equipped with small reactor AIP is the trend of conventional submarine power in 21st century as well as a real power revolution in conventional submarine. Thus, the quantity of small reactor AIP Submarines is on the increase, and its decommissioning and decontamination will also become a significant international issue. However, decommissioning the small reactor AIP submarines is not only...

This study discusses hydrodynamic effects of horizontal spoilers fixed on submarine pipelines. Numerical calculations are conducted to investigate the influences of the spoiler on flow profile, vortex shedding frequency, drag coefficients and lift coefficients. The calculation results demonstrate that attached horizontal spoilers could change the wake flow and enhance the self-burial of the pip...

2. Hydrodynamic assessment ................................................................................................... 10 2.

This quarter we modified the database to account for the ship classification and ship counting guidance in the Secretary of the Navy’s Instruction 5030.8A [3]. First, we inserted four new fields: 1. 5030.8A Force Category – “Battleforce” or “Non-Battleforce.”1, 2 2. 5030.8A Ship Category – “Combatant Ship,” “Auxiliary Ship,” or “Combatant Craft.” 3. 5030.8A Ship Classification – For example: “W...

This paper presents finite volume method based on Reynolds-averaged Navier-Stokes (RANS) equations for computation of 2D axisymmetric flow around bare submarine hull using unstructured grid. The body used for this purpose is a standard DREA (Defence Research Establishment Atlantic) bare submarine hull. Shear Stress Transport (SST) k-ω model has been used to simulate turbulent flow past the hull...

Oregon Hearing Research Center, Oregon Health & Science University, Portland, OR, United States, National Center for Rehabilitative Auditory Research, VA Portland Health Care System, Portland, OR, United States, National Institute on Deafness and Other Communication Disorders, Bethesda, MD, United States, Hearing Center of Excellence, J-9, Defense Health Agency, Joint Base San Antonio, San Anto...