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Subgrid-Scale Model with Structural Effects Incorporated Through the Helicity

  • Nobumitsu YokoiEmail author
  • Akira Yoshizawa
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 196)

Abstract

By analogy with the Reynolds-averaged turbulence model, a subgrid-scale (SGS) model of turbulence with structural effect incorporated through the helicity is proposed. The SGS helicity implemented into the SGS stress is expected to suppress “too dissipative” properties of the Smagorinsky-type model applied to turbulence with coherent structures. Three types of helicity SGS models (two-, one-, and zero-equation models) are constructed depending on how many equations for the SGS statistical quantities should be solved in addition to the grid-scale (GS) momentum equation.

Notes

Acknowledgements

Numerical simulations for the validation of the SGS model are performed on the XC-30 of Center for Computational Astrophysics (CfCA), National Astronomical Observatory of Japan (NAOJ). Part of this work was supported by the JSPF Bilateral Project between Japan and Russia.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Institute of Industrial ScienceUniversity of TokyoMeguro, TokyoJapan
  2. 2.Emeritus at Institute of Industrial ScienceUniversity of TokyoTokyoJapan

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