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An Investigation into the Effect of Hydrodynamic Cavitation on Diesel using Optical Extinction

Lockett, R. D., Fatmi, Z., Kuti, O. and Price, R. (2015). An Investigation into the Effect of Hydrodynamic Cavitation on Diesel using Optical Extinction. Journal of Physics: Conference Series, 656(1), 012091. doi: 10.1088/1742-6596/656/1/012091

Abstract

A conventional diesel and paraffinic-rich model diesel fuel were subjected to sustained cavitation in a custom-built high-pressure recirculation flow rig. Changes to the spectral extinction coefficient at 405 nm were measured using a simple optical arrangement. The spectral extinction coefficient at 405 nm for the conventional diesel sample was observed to increase to a maximum value and then asymptotically decrease to a steady-state value, while that for the paraffinic-rich model diesel was observed to progressively decrease. It is suggested that this is caused by the sonochemical pyrolysis of mono-aromatics to form primary soot-like carbonaceous particles, which then coagulate to form larger particles, which are then trapped by the filter, leading to a steady-state spectral absorbance.

Publication Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Departments: School of Mathematics, Computer Science & Engineering > Engineering
School of Mathematics, Computer Science & Engineering > Engineering > Mechanical Engineering & Aeronautics
URI: http://openaccess.city.ac.uk/id/eprint/13538
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