Near Field Trailing Edge Tone Noise Computation

Blunt trailing edges in a flow often generate tone noise due to wall-jet shear layer and vortex shedding. In this paper, the spacetime conservation element and solution element (CE/SE) method is employed to numerically study the near-field noise of blunt trailing edges. Two typical cases, namely, flow past a circular cylinder (aeolian noise problem ) and flow past a flat plate of finite thickness are considered. The computed frequencies and the estimated sound pressure level (SPL) compare well with experimental data. For the aeolian noise problem, comparisons with the results of other numerical approaches are also presented.