Abstract
In earlier papers, we have studied the turbulent flow exponents \(\zeta _p\), where \(\langle |\Delta \mathbf{v}|^p\rangle \sim \ell ^{\zeta _p}\) and \(\Delta \mathbf{v}\) is the contribution to the fluid velocity at small scale \(\ell \). Using ideas of non-equilibrium statistical mechanics we have found
where \(1/\ln \kappa \) is experimentally \(\approx \,0.32\,\pm \,0.01\). The purpose of the present note is to propose a somewhat more physical derivation of the formula for \(\zeta _p\). We also present an estimate \(\approx \,100\) for the Reynolds number at the onset of turbulence.
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Acknowledgements
I am indebted to Giovanni Gallavotti, Pedro Garrido, and Victor Yakhot for useful discussions about the present paper.
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In memory of Rufus Bowen (1947–1978).
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Ruelle, D. A Theory of Hydrodynamic Turbulence Based on Non-equilibrium Statistical Mechanics. J Stat Phys 169, 1039–1044 (2017). https://doi.org/10.1007/s10955-017-1914-8
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DOI: https://doi.org/10.1007/s10955-017-1914-8