Direct acoustic computations of cold and heated jets

Marie Cabana , Véronique Fortuné , Yves Gervais

Round jets having a Mach number of 0.9 and a Reynolds number of 1700 are computed by direct numerical simulations using a characteristic-type formulation and high-order compact finite differences. Two simulations are carried out where the ratio of inflow to ambient temperature is equal to 1 (isothermal jet) and to 2 (anisothermal one) respectively. The influence of the jet temperature on the main features of the flow and its associated sound field is investigated.

Domaines: Mécanique [physics]

Marie Cabana, Véronique Fortuné, Yves Gervais. Direct acoustic computations of cold and heated jets. CFM 2009 - 19ème Congrès Français de Mécanique, Aug 2009, Marseille, France. ⟨hal-03378277⟩