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Supercritical Mixing of Flows with High Density Gradient

  • C. Huhn
  • W. Koschel
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM) book series (NNFM, volume 82)

Summary

To analyze the supercritical mixing behavior of a two-phase flow a coaxial flow of two gases with variable density gradient is investigated. The main item is the comparison of the core length development by varying the density ratio of the inner heavy gas jet to the annular light gas jet from 30 to 45. Thereby the velocity ratio between the slow heavy jet and the low density high speed flow is kept constant. The numerical simulation is carried out with a 2D Navier Stokes solver for compressible multi-species flows on an unstructured triangular grid. The mixing process, which is mainly determined by turbulent structures in the flow field is described with a k - ε model. The transport equations are integrated in time with a fifth order Runge-Kutta algorithm.

Keywords

Turbulent Kinetic Energy Density Ratio Core Length Mesh Parameter Momentum Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • C. Huhn
    • 1
  • W. Koschel
    • 1
  1. 1.Lehr- und Forschungsgebiet Betriebsverhalten der StrahlantriebeRWTH AachenAachenGermany

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