The batchelor spectrum for mixing of passive scalars in isotropic turbulence: Submitted for the special issue dedicated to S. B. Pope

Diego A. Donzis, K. R. Sreenivasan, P. K. Yeung

Research output: Contribution to journalArticlepeer-review

Abstract

We examine the support for the Batchelor spectrum from well-resolved simulations of high-Schmidt-number mixing in isotropic turbulence, and resolve a conundrum with respect to the numerical value of the prefactor, also known as the Batchelor constant. Our conclusion is that the most probable value of the most compressive principal strain rate is more relevant than its mean, at least asymptotically.

Original languageEnglish (US)
Pages (from-to)549-566
Number of pages18
JournalFlow, Turbulence and Combustion
Volume85
Issue number3-4
DOIs
StatePublished - Dec 2010

Keywords

  • Batchelor spectrum
  • High Schmidt number simulations
  • Passive scalar
  • Turbulent mixing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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