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Accession Number:
AD1004991
Title:
A Preliminary Validation of the RANS Code TASCflow Against Model Scale Submarine Hydrodynamic Data
Descriptive Note:
Conference Paper
Corporate Author:
Defence Research Establishment Atlantic Dartmouth, Nova Scotia Canada
Report Date:
1999-06-01
Pagination or Media Count:
9.0
Abstract:
A preliminary evaluation of the RANS code CFX-TASCflow for predicting the hydrodynamic forces on a fully appended submarine at a Reynolds number of 20 million is described. Except for drag, TASC flow makes good predictions of the overall forces up to moderate incidence angles using wall functions with a 371,000 node grid. At high incidence angles the predictions break down due to inadequate modeling of separation and shed circulation. The predictions improve with a finer grid and different turbulence models. Drag predictions improve when the boundary layer is modelled in place of wall functions.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE