Direct assessment of vorticity alignment with local and nonlocal strain rates in turbulent flows Journal Article uri icon



  • A direct Biot-Savart integration is used to decompose the strain rate into its local and nonlocal constituents, allowing the vorticity alignment with the local and nonlocal strain rate eigenvectors to be investigated. These strain rate tensor constituents are evaluated in a turbulent flow using data from highly resolved direct numerical simulations. While the vorticity aligns preferentially with the intermediate eigenvector of the combined strain rate, as has been observed previously, the present results, for the first time, clearly show that the vorticity aligns with the most extensional eigenvector of the nonlocal strain rate. This, in turn, reveals a significant linear contribution to the vortex stretching dynamics in turbulent flows.

publication date

  • November 1, 2008

has restriction

  • green

Date in CU Experts

  • December 15, 2013 10:49 AM

Full Author List

  • Hamlington PE; Schumacher J; Dahm WJA

author count

  • 3

Other Profiles

International Standard Serial Number (ISSN)

  • 1070-6631

Electronic International Standard Serial Number (EISSN)

  • 1089-7666

Additional Document Info


  • 20


  • 11