Accession Number : ADA210642


Title :   Geometric Characteristics of DARPA (Defense Advanced Research Projects Agency) SUBOFF Models (DTRC Model Numbers 5470 and 5471)


Corporate Author : DAVID TAYLOR RESEARCH CENTER BETHESDA MD SHIP HYDROMECHANICS DEPT


Personal Author(s) : Groves, Nancy C ; Huang, Thomas T ; Chang, Ming S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a210642.pdf


Report Date : Mar 1989


Pagination or Media Count : 82


Abstract : The Submarine Technology Program Office of DARPA funded a concerted and coordinated computational fluid dynamics program to assist in the development of advanced submarines for the future. The DARPA SUBOFF project will evaluate, in a competitive environment directly against model test results, flow field predictions of an axisymmetric hull model with and without appendages. The model configurations were designed at DTRC and are given in this report. An axisymmetric body, fairwater, symmetric stern appendages, two ring wings and ring wing support struts were designed for DARPA SUBOFF project. Two geometrically identical models, designed to a linear scale ratio of 24, will be constructed to allow simultaneous testing in different facilities. Geometrical details of all components, including defining equations with computer code listings, are provided. The locations of velocity measurement stations and of surface pressure taps are also given. This information is intended for use by both the model test engineer and the CFD engineer. Keywords: Submarine hull models; Shroud struts; Pressure measurement; Geometric forms.


Descriptors :   *SUBMARINE HULLS , *SUBMARINE MODELS , TEST AND EVALUATION , VELOCITY , COMPUTER PROGRAMS , STATIONS , MEASUREMENT , RATIOS , COMPUTATIONS , PREDICTIONS , SCALE MODELS , PRESSURE MEASUREMENT , FLOW FIELDS , SURFACE PROPERTIES , GEOMETRIC FORMS , MODEL TESTS , CONFIGURATIONS , LINEARITY , SYMMETRY , APPENDAGES , RING WINGS , TAPS , SHIP STERNS , STRUTS , SCALING FACTOR , PRESSURE , AXISYMMETRIC , ENGINEERS , COVERINGS , SYNCHRONISM , EQUATIONS , FLUID DYNAMICS , SUBMARINES


Subject Categories : Submarine Engineering
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE