REDUCING MODEL TESTING TIME BY 40% IN THE TOWING TANK AT THE OCEAN ENGINEERING CENTER OF B.C. RESEARCH USING SURGE AND WAVE DAMPING DEVICES

The present waiting time required for the towing tank at the Ocean Engineering Centre of B.C. Research in Vancouver, B.C. to calm down between model test runs is twenty to thirty minutes. This time lapse is non-productive for those performing the tests (a minimum of two people is required for testing). By reducing the waiting time between model test runs, the productivity of the towing tank could be increased. By installing three different types of water calming devices in the towing tank, an estimated 40% decrease in the waiting time for the model test runs can be achieved. The damping devices studied in this discussion all have a good effect on calming down the water in the towing tank. However, each damping device is only very effective for part of the total wave action that is to be eliminated, so the necessity for installation of a combined system is recommended. The beaches proved useful for breaking up the high energy waves created by the wavemaker, and the tethered float breakwater function dampened the surface chop resulting from the reflection of the waves off the walls. The pneumatic breakwaters system proved necessary to stop the surge in the tank as no other device is as effective in reducing the wave surge motion in the towing tank. A diagram of the arrangement for the combined system of wave reduction recommended for the towing tank is included.

  • Supplemental Notes:
    • Paper presented on 8 March 1980 to the Pacific Northwest Section, SNAME.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  USA  07306-2907
  • Authors:
    • Rea, K
  • Publication Date: 1980

Media Info

  • Features: References;
  • Pagination: 26 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00316707
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM