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Accession Number:
ADA278325
Title:
Shock-Turbulence Interaction and the Generation of Noise
Corporate Author:
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER
Report Date:
1955-01-01
Abstract:
Interaction of convected field of turbulence with shock wave is analyzed to yield modified turbulence, entropy spottiness, and noise generated downstream of the shock. Analysis is generalization of single-spectrum-wave treatment of TNN 2864. Formulas for spectra and correlation are obtained. Numerical calculations yield curves of rms velocity components, temperature, pressure, and noise in db against Mach number for M 1 to both isotropic and strongly axisymmetric lateralLongitudinal 361 initial turbulence are treated. In either case, turbulence of 0.1 percent longitudinal component generates about 120 dbs of noise.
Pages:
0023
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
1.43MB
