Noise calculation on the basis of vortex flow modelsA technique for noise calculation on the basis of vortex flow models is described. The 'reflection principle' is first extended to the whole class of potential flows which may be solved by the method of images. This allows the sound radiation to be computed solely through a volume integral over both the exterior and interior of any surfaces which may be present. The source distribution is then rewritten in terms of the vorticity within the flow which yields a highly computationally efficient formulation of the aeroacoustic theory. Several examples of such noise calculations are included.
Document ID
19780049178
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hardin, J. C. (NASA Langley Research Center Hampton, Va., United States)