Abstract
Pressure fluctuation is measured by using a condenser microphone and piezoresistive transducer. In order to confirm the experimental accuracy, measured data are compared with direct numerical simulation. This basic test encourages us to study small-scale statistics from the standpoint of Kolmogorov universal scaling. The power-law exponent and proportional constant of normalized pressure spectrum are discussed. The clear power law with scaling exponent –7/3 is confirmed in the range of Rλ ≥ 600. These Reynolds numbers are much larger than those in velocity fluctuation for achieving the Kolmogorov scaling. The spectral constant K p is not universal but depends on Reynolds number.
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Tsuji, Y., Ishihara, T. (2006). STATISTICAL PROPERTY OF PRESSURE FLUCTUATION IN FULLY DEVELOPED TURBULENCE. In: KIDA, S. (eds) IUTAM Symposium on Elementary Vortices and Coherent Structures: Significance in Turbulence Dynamics. Fluid Mechanics and Its Applications, vol 79. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4181-0_17
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DOI: https://doi.org/10.1007/1-4020-4181-0_17
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