Experiments in Fluids

, Volume 29, Issue 3, pp 275–290

Analysis and interpretation of instantaneous turbulent velocity fields

  • R. J. Adrian
  • K. T. Christensen
  • Z.-C. Liu

DOI: 10.1007/s003489900087

Cite this article as:
Adrian, R., Christensen, K. & Liu, ZC. Experiments in Fluids (2000) 29: 275. doi:10.1007/s003489900087

Abstract

Methods of analyzing and interpreting velocity-field data (both two- and three-dimensional) to understand the kinematics, dynamics, and scales of turbulence are discussed. Reynolds decomposition and vorticity are traditionally used; however, several other methods, including Galilean (constant convection velocity) and LES decompositions (low-pass filtering), in conjunction with critical-point analysis of the local velocity gradient tensor, reveal more about the structure of turbulence. Once the small-scale structures have been identified, it is necessary to assess their importance to the overall dynamics of the turbulence by visualizing the motions they induce and the stresses they impose both on other small-scale vortices and on the larger-scale field.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • R. J. Adrian
    • 1
  • K. T. Christensen
    • 1
  • Z.-C. Liu
    • 1
  1. 1.Laboratory for Turbulence and Complex Flow Department of Theoretical and Applied Mechanics University of Illinois, Urbana, IL 61801, USAUS