Direct acoustic computations of cold and heated jets

Abstract

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

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