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ATOMISATION IN TURBULENT FLOWS: MODELLING FOR APPLICATION

Novid Beheshti
School of Mechanical Engineering, The University of Leeds, Leeds, LS2 9JT, United Kingdom

A. A. Burluka
School of Mechanical Engineering, The University of Leeds, Woodhouse Lane, Leeds LS2 9JT UK; and CORIA UMR 6614 CNRS, University of Rouen, Rouen, France

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

Resumo

Sensitivity of predictions obtained with the atomisation model suggested recently, Vallet et al. (2001), to a choice of a particular turbulence model has been tested. Three different k − ε-type turbulence models, standard, RNG and one including pressure gradient-velocity correlation, have been applied for a test case of air-assisted atomisation. The results show that the pressure gradient-velocity correlation is important and it allows good agreement with experiments for predicted SMD values on the jet axis to be obtained. However, all the models tested underpredict the spray jet spread rate.