Scale resolving simulations of a high-temperature turbulent jet in a cold crossflow: Comparison of two approaches

Romain Paysant (1, 2) , Emmanuel Laroche (2) , Julien Troyes (2) , David Donjat (2) , Pierre Millan (2) , Pierre Buet (1)

1 Airbus Helicopters
2 DMPE, ONERA, Université de Toulouse [Toulouse]

A high-temperature turbulent jet in a cold crossflow is investigated with the help of two scale-resolving simulation approaches. This work aims at improving the methodologies used to predict the thermal footprint of exhaust gases issuing from helicopter engines onto the fuselage. Specific attention is brought to the capability of scale resolving simulations to correctly reproduce flow dynamics and turbulent mixing. Mean flow features, turbulent quantities and temperature fields are compared and validated against wind tunnel test measurements. In addition, the present work highlights the importance of synthetic turbulence injection at pipe inlet to obtain a fair prediction of both flow dynamics and temperature field.

Mots clés: Jet in crossflow; Computational Fluid Dynamics CFD; RANS/LES; Turbulence

Domaines: Mécanique des fluides [physics.class-ph]

Romain Paysant, Emmanuel Laroche, Julien Troyes, David Donjat, Pierre Millan, et al.. Scale resolving simulations of a high-temperature turbulent jet in a cold crossflow: Comparison of two approaches. International Journal of Heat and Fluid Flow, 2021, 92, pp.108862. ⟨10.1016/j.ijheatfluidflow.2021.108862⟩. ⟨hal-03440206⟩