Abstract
ABSTRACT Conventional oil retention booms fail to contain oil in currents above one to two knots. A steamlined boom to operate in currents or while being towed in excess of two knots was designed and tested under varying current and combined wave-current conditions. The boom consists of airfoil-shaped sections which resemble hydrofoils operating at the water surface. The boom is designed so that the stagnation streamline at the leading edge of the foil is located beneath the oil spill under a range of dynamic current and wave conditions. Motion of the boom through the water (or the flow past the boom due to a net current) causes a bow wave which sweeps oil and water over the top of the leading edge of the boom and into a sump. Tests indicated that the streamlined boom profile has a drag coefficient of less than one-third that of conventional boom shapes. Collection efficiency measurements with oil indicate that collection efficiencies greater than 75 percent can be achieved at three knots.
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