Bounds for second order structure functions and energy spectrum in turbulence

Peter Constantin, Q. Nie, S. Tanveer

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In this paper we derive upper bounds for the second order structure function as well as for the Littlewood-Paley energy spectrum - an average of the usual energy spectrum E(k). While the upper bound results are consistent with a Kolmogorov type dependence on wave number k, the bounds do not involve the usual dissipation rate e. Instead the bounds involve a dissipative quantity ∈̂ similar to ∈ but based on the L3 average of Δu. Numerical computations for a highly symmetric flows with Taylor microscale Reynolds numbers up to R-λ- 155 are found to be consistent with the proposition that a relation in the inertial regime of the type E(k) ∼ Ĉ∈̂2/3k-5/3 holds with constant Ĉ.

Original languageEnglish (US)
Pages (from-to)2251-2256
Number of pages6
JournalPhysics of Fluids
Volume11
Issue number8
DOIs
StatePublished - Aug 1999

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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