Estimation of Wall‐Pressure Fluctuations in a Separated Flow

1971 ◽  
Vol 50 (3B) ◽  
pp. 985-991 ◽  
Author(s):  
F. R. Fricke ◽  
D. C. Stevenson
Keyword(s):  
Pressure Fluctuations ◽  
Separated Flow ◽  
Wall Pressure ◽  
Wall Pressure Fluctuations

scholarly journals TRANSVERSELY STREAMLINED CYLINDER ON RIGID SURFACE

2021 ◽  
pp. 87-94
Author(s):  
V. A. Voskoboinick ◽  
O. A. Voskoboinyk ◽  
A. M. Onishchenko ◽  
A. V. Voskobijnyk
Keyword(s):  
Pressure Fluctuation ◽  
Pressure Fluctuations ◽  
Experimental Studies ◽  
Separated Flow ◽  
Wall Pressure ◽  
Mathematical Statistics ◽  
Mathematical Apparatus ◽  
Rigid Surface ◽  
Research Results ◽  
Wall Pressure Fluctuations

The results of experimental studies are presented in order to study the features of the formation of separated and vortex flows in the vicinity of a transversely streamlined cylinder on the surface of a hydraulically smooth rigid surface and to determine the space-time characteristics of sources of wall pressure fluctuations. The studies were carried out in laboratory conditions on transversely streamlined cylinders, which were located on a rigid surface. The field of wall pressure fluctuations was measured by a group of miniature piezoceramic pressure fluctuation sensors, which were installed flush with the streamlined rigid surface in front of the cylinder and in its wake. The research results were processed and analyzed using the mathematical apparatus of the theory of probability and mathematical statistics. The spectral and correlation characteristics of the separated flow in the vicinity of a transversely streamlined cylinder are obtained.

The Quantification of Internal Noise Levels and Wall Pressure Spectra in Industrial Gas Pipelines

1991 ◽  
Author(s):  
M. P. Norton ◽  
A. Pruiti
Keyword(s):  
Prediction Models ◽  
Transmission Loss ◽  
Pressure Fluctuations ◽  
Internal Noise ◽  
Wall Pressure ◽  
Gas Pipelines ◽  
Noise Levels ◽  
Empirical Prediction ◽  
Wall Pressure Fluctuations ◽  
Semi Empirical

Abstract This paper addresses the issue of quantifying the internal noise levels/wall pressure fluctuations in industrial gas pipelines. This quantification of internal noise levels/wall pressure fluctuations allows for external noise radiation from pipelines to be specified in absolute levels via appropriate noise prediction models. Semi-empirical prediction models based upon (i) estimated vibration levels and radiation ratios, (ii) semi-empirical transmission loss models, and (iii) statistical energy analysis models have already been reported on by Norton and Pruiti 1,3 and are not reported on here.

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