FUNDAMENTAL RESEARCH ON A LIVE FISH CARRIER (I) - FLOW FIELD AROUND A HULL AND HULL RESISTANCE

On a large live fish carrier, the water is circulated in each tank by draining the used water from the side-shell exits and taking in fresh sea water from the bottom entrances of the ship by the pressure differences. To circulate the water effectively with a small increase in hull resistance is important to understand the flow field around the hull. The pressure was measured on the bottom and side shell at 5 sections of a model boat. The velocity distributions were measured at a position 1cm from the hull surface of the model to obtain the pressure distribution on the hull surface. The pressure distribution on the hull surface was calculated using the boundary element method (BEM). From these results it is shown that the values calculated by the BEM using the velocity potential are satisfactory. Resistance tests were performed on a 2m model which had 46 entrance holes (each with a diameter of 11.0mm ) at the bottom and 56 exit holes at the side shell. The model was tested in a circulating water channel in two conditions with and without holes. It was found that the resistance of a model with open holes increases by about 5% in comparison with the resistance of a model without holes.

  • Supplemental Notes:
    • Trans Soc Naval Architects West Japan, n 90, Aug 1995, p 67 [9 p, 3 tab, 4 tab, 8 fig]
  • Authors:
    • Ueda, K
    • Nakayama, H
  • Publication Date: 1995

Language

  • Japanese

Subject/Index Terms

Filing Info

  • Accession Number: 00718265
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM