Simulation and Analysis of Mixing in Two-Dimensional Turbulent Flows Using Fourier and Wavelet Techniques

  • Henning Bockhorn
  • Wolfgang Gerlinger
  • Kai Schneider
  • Jörg Ziuber
Conference paper

Abstract

This paper presents direct numerical simulations of mixing of passive and reactive scalars in two-dimensional flows. By means of pseudo-spectral methods the governing equations are numerically integrated. As an application we study a temporally growing mixing layer where we focus on the role of coherent vortices. Wavelet techniques are applied to obtain local spectral information about vorticity and scalars. We show that the local generation of fine scales in shear zones is strongly correlated with locally enhanced mixing. Furthermore, we examine the influence of chemical reactions.

Keywords

Vortex Convection Vorticity 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Henning Bockhorn
    • 1
  • Wolfgang Gerlinger
    • 1
  • Kai Schneider
    • 1
  • Jörg Ziuber
    • 1
  1. 1.Institut für Chemische TechnikUniversität Karlsruhe (TH)KarlsruheGermany

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