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Modelling particle evolution in turbulent high pressure sonic CO2 jets

C.J. Wareing
School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom; School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom

Michael Fairweather
School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK

Robert M. Woolley
School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom

S. A. E. G. Falle
School of Mathematics, University of Leeds, Leeds LS2 9JT, UK

Abstract

The behaviour of CO2 particles from high pressure liquid releases through small nozzle diameters is predicted using a RANS approach, closed using a second-moment turbulence model, coupled to a composite equation of state for CO2 used in conjunction with a solid phase equation of state. The fluid and particles are two-way coupled through a fluid-temperature dependent particle relaxation model which is found to considerably alter the Mach shock structure of these jets. Comparisons with experimental data validate the numerical approach.

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