流出油拡散防止膜の横波中における滞油性能について

概要

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To investigate the possibility of preventing spilt oil diffusion by Oil-Curtain and factors relating to the performance of containing spilt oil under rough weather condition, some model experiments are carried out. In the experiments, a tanker model of 318cm length which is enclosed with a curtain made of a vinyl sheet of 0.1mm thickness is set in a towing tank and the behavior of the curtain and contained oil are observed in beam sea. From the experiments, following results are obtained. (1) When height of waves becomes higher, the change of the curtain shape goes through the similar stages for various wave periods and quantities of contained oil. (2) Limit height of waves to contain oil becomes the minimum when Tr/Tw nearly equals to 1, where Tr=rolling period of a ship with the curtain, Tw=wave period. (3) A side at which contained oil passes under the curtain depends on the phase difference between the rolling and the heaving. (4) A relative heeling angle against wave surface is one of the limit value to contain oil with-in the region enclosed with curtain. (5) The experimental results suggest that it is possible to improve the performance to contain oil by adjusting ballast or shifting cargoes.
社団法人日本航海学会の論文
1999-09-25