The drift velocity of oil film on the sea |
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| Authors: | Kang Xinglun |
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| Institution: | (1) Institute of Oceanology, Academia Sinica, Qingdao |
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| Abstract: | To make surface seawater flow, the shear stress of the wind blowing on the sea must overcome the work of cohesion of seawaterW
c. Oil film on the sea will drift along the wind direction so long as the shear stress of the wind overcomes the work of adhesion
between the water and the oilW
a or the work of cohesion of oil Wt,o.
Experiments bear out the theory that surface tension of seawater is more than twice that of oils generally, so that the wind
influenced drift velocity of the oil film is over two times that of the wind-driven surface current. The wind factor for surface
current in Jiaozhou Bay is 0.025, while those for the drift velocities of O-diesel oil film and the used light crude oil film
are 0.070 and 0.052 respectively.
Generally the primary factors influencing the movement velocity of oil film on the sea are current, wind, and the physicochemical
properties of the oil. The drift velocity of oil film is determined from analysis of the work of adhesion between seawater
and oil. Experiments and actual observations agree with the theoretical analysis.
Contribution No. 1831 from the Institute of Oceanology, Academia Sinica |
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| Keywords: | |
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