A WAKE MEASUREMENT USING FIBER OPTIC LASER DOPPLER VELOCIMETER IN A TOWING TANK

Investigations were made of Laser Doppler Velocimeter (LDV) measurement in a towing tank, especially with regard to the seeding technique and the traversing of an optical unit. The longitudinal velocity component of the flow at the propeller-disk plane of a pure car carrier was measured in a towing tank using a small fiber-optic LDV. From the front of the model ship bow, a water and aluminum powder mixture was injected as seeding into the flow field. The data rate was between 10 and 300 counts per second. A comparison with a 5-hole Pitot tube showed that the wake contour obtained using an LDV is similar to that obtained using a Pitot tube, but slightly wider.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03899101
• Supplemental Notes:
  • Journal article
• Authors:
  • Kakugawa, A
  • Takei, Y
  • Takeshi, H
• Publication Date: 1989-3

Language

• Japanese

Media Info

• Features: References;
• Pagination: 7 p.
• Serial:
  • Journal of the Kansai Society of Naval Architects
  • Issue Number: No.211
  • ISSN: 0389-9101

Subject/Index Terms

• TRT Terms: Container tanks; Fiber optics; Laser doppler velocimeters; Measurement; Towing devices; Wakes
• Old TRIS Terms: Towing tanks
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00658580
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM