Numerical simulation of the flow within a fluidic precessing jet nozzle

Abstract

This paper presents a Computational Fluid Dynamics (CFD) model of a complex, three-dimensional and oscillatory flow generated by an axisymmetric fluidic precessing jet nozzle. ANSYS has been chosen as the platform for the modelling. Compared with previous experimental results, good qualitative agreement of the main flow features and reasonable quantitative agreement of both the phase-averaged velocity contours of five planes within the nozzle and the Strouhal number that predicted by the numerical model has been achieved. The influence of cycle to cycle variation has also been discussed.