Accession Number : ADP008973

Title :   Development of LDV for Full-Scale Measurements of Ship Stern Flow,

Corporate Author : TECHNICAL UNIV OF LISBON (PORTUGAL)

Personal Author(s) : Tanibayashi, H. ; Imaru, J. ; Muramoto, T.

Report Date : 23 JUL 1992

Pagination or Media Count : 5

Abstract : A Laser Doppler Velocimetry was developed to measure the full-scale propeller inflow distribution as a basis of calculating propeller vibratory forces. The present development is featured by (1) wide range of measurement as far as 8m away from the hull and (2) improving signal to noise ratio to measure the long distance within a relatively short period of measurement. In this paper is presented the description of this measurement system, together with some results of full-scale measurement and discussion on them.

Descriptors :   *MARINE PROPELLERS, *FLOW FIELDS, LASER VELOCIMETERS, SHIP HULLS, WAKE, VIBRATION, SIGNAL TO NOISE RATIO, DOPPLER EFFECT, JAPAN.

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE