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Patent Searching and Data


Title:
ARTIFICIAL IRREGULAR WATER WAVE GENERATOR
Document Type and Number:
Japanese Patent JPH02147933
Kind Code:
A
Abstract:

PURPOSE: To enable simulation of oscillation in a short wave top irregular wave of a ship and a marine construction off shore or along coast by generating an even direction spectrum wave having a projected direction distribution function.

CONSTITUTION: A test water tank 11 is made larger in length L than a width B thereof with L/B exceeding about 10. A wave generated with an artificial irregular water wave generator 10 is reflected repeatedly on both side walls on a long side 23 of the test water tank 11 to generate a directive wave in a wide range within the test water tank 11. At this point, a wave making signal generated preliminarily is sent to a driver 17 of each wavemaking unit 15 and with a controller 13, a wave making signal is outputted as corrected based on a correction amplitude ratio characteristic. Thus, a specified direction spectrum wave can be generated on the test water tank 11 as desired.


Inventors:
TAKEZAWA SEIJI
YAMAGISHI NAOTO
YAMASHITA SEIYA
Application Number:
JP30365088A
Publication Date:
June 06, 1990
Filing Date:
November 30, 1988
Export Citation:
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Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
G01M10/00; (IPC1-7): G01M10/00
Attorney, Agent or Firm:
Toru Sakamoto