University of Illinois Urbana-Champaign

On analysis and interpretation of turbulent velocity fields

Adrian, Ronald J.; Christensen, Kenneth T.; Liu, Zi-Chao

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https://hdl.handle.net/2142/112616

Description

Title
On analysis and interpretation of turbulent velocity fields
Author(s)
  • Adrian, Ronald J.
  • Christensen, Kenneth T.
  • Liu, Zi-Chao
Issue Date
1999-05
Keyword(s)
Turbulent Velocity Fields
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 are 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 the larger-scale field.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 909
  • 1999-6011
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112616
Sponsor(s)/Grant Number(s)
National Science Foundation ATM 95-22662; CTS 96-16219
Copyright and License Information
Copyright 1999 Board of Trustees of the University of Illinois

Owning Collections

Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.