KAVİTE - KANAT KESİTİ ETKİLEŞİMİNİN AEROAKUSTİK ANALİZİ

In this study, unsteady incompressible flow field and aerodynamically generated noise of 2D cavity flows are investigated. In the case of 2D flow fields, unsteady standard k-e turbulence model is used for flow field to observe for different angle of attack of under different front edge angles. Computed numerical results for cavity are compared and validated with experimental measurement. Unsteady flow fields results are used to compute a cavity noise using Ffowcs William – Hawking (FW-H) Acoustics Analogy. The effect of cavity – airfoil interaction with passive control on the acoustic signal is studied and results are compared.Computed noise levels for cavity - airfoil interaction and passive control mechanism are investigated for microphone which are located at different position and the effect of unsteady flow field structure on acoustic signal especially on the range of 0 – 100 Hz are computed