Viscous effects for submerged oil leakage from damaged tank of double-hull tankers

摘要

As submerged oil leakage from damaged tanker is unable to be avoided,a large number of scholars have carried out a series of studies on themechanism of submerged oil leakage from damaged tank of doublehulltankers based on simplified in-viscid model. With the furtherresearch on prediction model of oil leakage and leakage features,viscosity of crude oil has become an essential factor that can't beignored in improving prediction accuracy. At present, hydro-static andhydrodynamic theory have been applied to the researches onsubmerged oil leakage from damaged tanker, but the effects ofviscosity and turbulence are ignored. Nevertheless, a change inviscosity of oil or the inner structure of double bottom or sloshing leadsto significant changes in the behavior of oil leakage ,which confirmsthe presence of viscous effects.This paper presents a study on viscous effects for submerged oilleakage from damaged tank of double-hull tankers. Based onmultiphase flow theory and viscous hydrodynamic theory, themechanism of viscous effects on submerged oil leakage in differentleakage stages is explored by the experimental investigation. Thepresented results are beneficial for a better understanding of viscouseffects for submerged oil leakage from damaged tank of double-hulltankers and an emergency control of crude oil leakage from tankers.