船槽外放出ガスの挙動-I

概要

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The movement of atmospheric gas emitted from oil tanker originated in water ballasting and cargo loading, will be affected strongly due to causative elements-wind, emtting gas velocity, difference of density between gas and air, freebcard and super structure of ship and other environmental conditions. In this connection, the authors tried to study about the corelations between the extention of gas explosive zone and several elements above stated by model test using propane gas, making use of wind tunnel with water tank. A summary of the results is shown as follows: (1) In case of high wind speed and small freeboard of ship, maximum density on the sea surface were similar to the calculated results by Sutton's solution. But in case of high wind speed and large freeboard of ship, they foot up to 8〜10 times of theoretical values. (2) In case of low wind speed, they foot up to 5〜9 times of theoretical values. And the highest of them was 0.31% when wind speed was 0.45m/sec.
社団法人日本航海学会の論文
1982-08-25