Understanding subsonic and transonic cavity flows

摘要

A computational investigation of the subsonic and transonic turbu- lent open flow over cavities was conducted. Simulations of these oscillatory flows were generated through time-accurate solutions of the Reynolds-averaged form of the Navier-Stokes equations. The effect of turbulence was included through the k-ε model. The results presented include calculations of the acoustic pressure distrib- utions along the cavity floor, which compare well with experiment. The results are then used to describe the behaviour of the flow.