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Investigation of Eddy Diffusivity in a Reactive Plane Jet by Using Direct Numerical Simulation

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AsiaSim 2012 (AsiaSim 2012)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 323))

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Abstract

Eddy diffusivity in a planar turbulent jet with a second-order chemical reaction (A+B→R) is investigated by using direct numerical simulation. Reactant A and B are premixed into the jet flow and the main flow, respectively. The eddy diffusivity of species A on the jet centerline is calculated from the mean concentration of species A and the streamwise turbulent mass flux of the species A. The results show that the chemical reaction makes the eddy diffusivity of species A small, and the effects of the chemical reaction on the eddy diffusivity depend on the Damköhler number. From these results, we can conclude that the gradient diffusion model should be used with considerations of the effects of chemical reactions on eddy diffusivity.

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References

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Author information

Authors and Affiliations

  1. Nagoya University, Nagoya, Japan

    Tomoaki Watanabe, Yasuhiko Sakai, Kouji Nagata, Osamu Terashima & Yasumasa Ito

  2. Nagoya Institute of Technology, Nagoya, Japan

    Hiroki Suzuki

  3. Tohoku University, Sendai, Japan

    Toshiyuki Hayase

Authors
  1. Tomoaki Watanabe
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  2. Yasuhiko Sakai
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  3. Kouji Nagata
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  4. Osamu Terashima
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  5. Yasumasa Ito
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  6. Hiroki Suzuki
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  7. Toshiyuki Hayase
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Editor information

Editors and Affiliations

  1. National CIMS Engineering Research Center, Department of Automation, Tsinghua University, 100084, Beijing, China

    Tianyuan Xiao

  2. School of Automation Science and Electrical Engineering, Beihang University, 100191, Beijing, China

    Lin Zhang

  3. School of Mechatronics Engineering and Automation, Shanghai University, 200072, Shanghai, China

    Minrui Fei

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© 2012 Springer-Verlag Berlin Heidelberg

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Watanabe, T. et al. (2012). Investigation of Eddy Diffusivity in a Reactive Plane Jet by Using Direct Numerical Simulation. In: Xiao, T., Zhang, L., Fei, M. (eds) AsiaSim 2012. AsiaSim 2012. Communications in Computer and Information Science, vol 323. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-34384-1_18

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  • DOI: https://doi.org/10.1007/978-3-642-34384-1_18

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-34383-4

  • Online ISBN: 978-3-642-34384-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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