Partially-averaged Navier-Stokes model for turbulence: A Reynolds-averaged Navier-Stokes to direct numerical simulation bridging method Conference Paper uri icon


  • A turbulence bridging method purported for any filter-width or scale resolutionfully averaged to completely resolvedis developed. The method is given the name partially averaged Navier-Stokes (PANS) method. In PANS, the model filter width (extent of partial averaging) is controlled through two parameters: the unresolved-to-total ratios of kinetic energy (fk) and dissipation (f). The PANS closure model is derived formally from the Reynolds-averaged Navier-Stokes (RANS) model equations by addressing the following question: if RANS represents the closure for fully averaged statistics, what is the corresponding closure for partially averaged statistics? The PANS equations vary smoothly from RANS equations to Navier-Stokes (direct numerical simulation) equations, depending on the values of the filter-width control parameters. Preliminary results are very encouraging.

published proceedings


altmetric score

  • 0.25

author list (cited authors)

  • Girimaji, S. S.

citation count

  • 361

complete list of authors

  • Girimaji, SS

publication date

  • May 2006