USING SHUMP TO DISPLAY SHIP HULLS, PROPELLERS AND FLOW FIELDS

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Authors
  1. Hally, D.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
SHUMP is a graphics program which displays three-dimensional scenes built from a hierarchy of simple objects: points, lines, panels, and so on. In this document two additional computer programs are described; they create SHUMP input files which display propellers, ship hulls, and the flows around them. PRPPNL generates a SHUMP input file which includes a single propeller with the option of adding sheet cavitation extents on the back of each blade. The display may be animated to show the variation of cavitation as the propeller turns. The propeller geometry is obtained from the DREA propeller geometry database, while cavitation extents are those predicted by the computer program CAVITY. HLLPNL generates a SHUMP input file which may include the hull, its propellers including sheet cavitation extents, streamlines, a surface at the edge of the boundry layer, shaded plots of boundary layer parameters at the hull surface, and displays of the flow field around the hull. The hull geometry is obtained from a HLLSRF representation, while the flow around it is obtained from the suite of computer programs HLLFLO.
Keywords
COMPUTER PROGRAMS (SHUMP);COMPUTER PROGRAMS (HLLFLO);COMPUTER PROGRAMS (HLLSRF);COMPUTER PROGRAMS (POTFLO);COMPUTER PROGRAMS (CAVITY)
Report Number
DREA-TC-94-307 — Technical Communication
Date of publication
01 May 1994
Number of Pages
32
DSTKIM No
94-06354
CANDIS No
143457
Format(s):
Hardcopy;Document Image stored on Optical Disk

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