DOI

The renormalization of the solution of the Navier-Stokes equation for randomly stirred fluid with long-range correlations of the driving force is analysed near two dimensions. It is shown that a local term must be added to the correlation function of the random force for the correct renormalization of the model at two dimensions. The interplay of the short-range and long-range terms in the large-scale behaviour of the model is analysed near two dimensions by the field-theoretic renormalization group. A regular expansion in 2ε= d-2 and δ=2-λ is constructed, where d is the space dimension and λ the exponent of the powerlike correlation function of the driving force. It is shown that in spite of the additional divergences, the asymptotic behaviour of the model near two dimensions is the same as in higher dimensions, contrary to recent conjectures based on an incorrect renormalization procedure.

Original languageEnglish
Pages (from-to)297-303
Number of pages7
JournalZeitschrift fur Physik B-Condensed Matter
Volume99
Issue number2
DOIs
StatePublished - 1996

    Scopus subject areas

  • Materials Science(all)

    Research areas

  • 05.40. +j, 11.10.Hi, 47.27.Gs

ID: 5181734