Second order structure functions for higher powers of turbulent velocity

Journal of Physics. Condensed Matter : an Institute of Physics Journal
F Paraz, M M Bandi

Abstract

We experimentally study the temporal second-order structure functions for integer powers of turbulent fluid velocity fluctuations [Formula: see text], in three dimensional (3D) and two dimensional (2D) turbulence. Here [Formula: see text] is a composite time-series constructed by averaging the concurrent time-series ([Formula: see text]) sampled at N spatially distributed Eulerian points. The N  =  1 case has been extensively studied for velocity fluctuations (m  =  1) and to a lesser extent for m  >  1. The averaging method in case of N  >  1 diverges from the Kolmogorov framework and has not been studied because fluctuations in [Formula: see text] are expected to smooth with increasing N leaving behind uninteresting large-scale mean flow information, but we find this is not so. We report the evolution of scaling exponents [Formula: see text] for [Formula: see text] in going from a single (N  =  1) to a spatial average over several Eulerian points ([Formula: see text]). Our 3D experiments in a tank with rotating jets at the floor show [Formula: see text] for all m-values in agreement with prior results and evolves to an asymptotic value of [Formula: see text]. The evolution of [Formula: see text] follows the functional form [F...Continue Reading

References

Nov 1, 1994·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·G ZocchiH Willaime
Nov 1, 1994·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·G Falkovich, V Lebedev
May 15, 1995·Physical Review Letters·H KellayW I Goldburg
Sep 16, 2000·Physical Review Letters·M Rivera, X L Wu
Apr 12, 2003·Physical Review Letters·M K RiveraR E Ecke
Dec 31, 2005·Physical Review Letters·M K Rivera, R E Ecke
Apr 12, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M M BandiA Pumir
Apr 12, 2006·Physical Review Letters·Shiyi ChenZuoli Xiao
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jason LarkinWalter I Goldburg
Nov 24, 2011·Physical Review Letters·Samriddhi Sankar RayRahul Pandit
Feb 2, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M Wilczek, Y Narita
Jan 28, 2017·Physical Review Letters·M M Bandi

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Citations

Dec 11, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Ranjini Bandyopadhyay, Jürgen Horbach

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