초록 ▼

A noise abatement device that is positioned adjacent to a body. The noise abatement device generally includes tabs or cavities which thicken the shear layer created by fluid flow over, around, or near the body, by creating horseshoe-shaped vortices; this thickening of the shear layer reduces the str

A noise abatement device that is positioned adjacent to a body. The noise abatement device generally includes tabs or cavities which thicken the shear layer created by fluid flow over, around, or near the body, by creating horseshoe-shaped vortices; this thickening of the shear layer reduces the strength of fluctuations in the flow which produce noise.

대표청구항 ▼

1. A method of abating noise caused by a shear layer, the shear layer created by a fluid flow near an end of a body having a streamwise chord defined as being parallel to the fluid flow wherein the end of the body extends along a direction that is substantially parallel to the streamwise chord, the

1. A method of abating noise caused by a shear layer, the shear layer created by a fluid flow near an end of a body having a streamwise chord defined as being parallel to the fluid flow wherein the end of the body extends along a direction that is substantially parallel to the streamwise chord, the body further having a lift surface, said method comprising the step of:thickening the shear layer adjacent and along the end of the body by creating cross-stream mixing of the shear layer at positions on the lift surface along the end of the body.