SOME WARSHIP SLAMMING INVESTIGATIONS

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Authors
  1. Nethercote, W.C.E.
  2. MacKay, M.
  3. Menon, B.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Excessive slamming is the most common cause of speed reduction for frigates and destroyers in heavy head seas. DREA's early interest in frigate/destroyer slamming was limited to the development of computer programs for ship seakeeping performance prediction. Published bottom slamming algorithms were adopted and refined to provide a slamming prediction capability for DREA software. In follow-on work described herein, both two-dimensional numerical simulations and three-dimensional model tests were performed by contractors to obtain better physical insight and expand the empirical data base. The two-dimensional numerical simulation results required considerable smoothing to reduce numerical noise, but still yielded form factors in satisfactory agreement with two-dimensional theoretical and experimental results. The simulations also gave unique insight into the girthwise development of slamming pressures. TRUNCATED
Report Number
DREA-TM-86-206 — Technical Memorandum
Date of publication
15 Jan 1986
Number of Pages
43
DSTKIM No
86-01261
CANDIS No
96006
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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