有害液体貨物の海上流出拡散挙動の解析

概要

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The purpose of this report is to estimate the dangerous zone when a tanker leaks floating hazardous liquid cargo by an accident. The differential equation about the radius of liquid spreading on the sea surface has been obtained from the relation between its potential, kinetic, and viscositic energies, and from its vaporization. Furthermore numerical calculations have been made of several kinds of chemical substances by this equation. Its values have proved to agree with those of numerical simulations by the Simplified Marker and Cell method in case of an actual leak from a tanker. On the other hand, the vaporized gas concentration in atmospheric diffusion it has been obtained from a numerical simulation based on the Box Model. These results show that the dangerous zone becomes wider with an increase of saturated vapor pressure until it reaches nearly almost 155mmHg (n-hexan). The dangerous zone stretches far 800m from the broken point of tank when 150m^3 volume of n-hexan has been diffused into the neutrally stable atmosphere with wind velocity of 0.5m/sec.
社団法人日本航海学会の論文
1989-09-20