Aeroacoustic prediction based on large-eddy simulation and the Ffowcs Williams–Hawkings equation

Abstract A hybrid noise computation method is presented in this paper. Large-eddy simulation with wall-model equation proposed to compute the flow field. With a stress-balanced equation, near-wall cost of large eddy was effectively reduced. The instantaneous variables obtained by large-eddy were used source terms Ffowcs Williams–Hawkings equation. present investigated two test cases: single cylinder at Re = 10,000 and rod-airfoil 480,000. quantities aeroacoustic characteristics compared reference data. mean velocity profiles spectra fluctuations consistent data from literature. When data, error less than 3 dB. results demonstrate wall-modeled efficient for complex vortex shedding flows.