Application of Rapid Distortion Theory to the Prediction of Integrated Propulsion System Noise

Leib, Stewart J ; Goldstein, M E ; Afsar, M Z

关键词: AEROACOUSTICS;    PROPULSION SYSTEM CONFIGURATIONS;    FLOW DISTORTION;    NOISE PREDICTION;    JET AIRCRAFT NOISE;    TRAILING EDGES;    TURBULENCE;    BOUNDARY LAYERS;    WIENER HOPF EQUATIONS;    GREEN'S FUNCTIONS;   

RP-ID  :  GRC-E-DAA-TN61941

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

This presentation reviews past and current work done using inhomogeneous Rapid Distortion Theory (RDT) to develop reduced-order models for the prediction of noise generated by flow/surface interactions in geometries representative of propulsion systems which are tightly integrated with the airframe. The specific applications considered are: trailing-edge noise, generated by the interaction of a turbulent jet with a semi-infinite flat plate, and turbulence distortion and noise generation in a boundary-layer ingesting inlet. The inhomogeneous RDT formulation is briefly reviewed, a sampling of available results are shown and the current status and future plans for work on these two applications are discussed.