A Preliminary Validation of the RANS Code TASCflow Against Model Scale Submarine Hydrodynamic Data

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Authors
  1. Watt, G.D.
  2. Knill, K.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
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, TASCflow 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 modelling 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.
Keywords
Computational fluid dynamics;Computational Fluid Dynamics (CFD);Computer programs (TASCflow);Submarine models
Report Number
DREA-SL-1999-053 — External Paper
Date of publication
01 Jun 1999
Number of Pages
9
DSTKIM No
CA001217
CANDIS No
513118
Format(s):
Hardcopy;Document Image stored on Optical Disk

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