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Evaluation of high-order concentration statistics in a dispersing plume

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  • Bisignano, Andrea
  • Mortarini, Luca
  • Ferrero, Enrico

Abstract

In this paper we analyze the concentration higher-order moments of a dispersing plume in a neutral wind tunnel boundary layer. They are evaluated through a fluctuating plume model in which the plume barycenter is directly calculated from the measured mean concentration field. The reliability of the model is firstly verified by comparing the simulated and measured moments up to the fourth order. Then the relationships between higher and lower-order moments are investigated seeking for a proper scaling of the fourth, fifth and sixth-order normalized moments. We found that a general behavior appears when they are expressed as a function of the third-order moments. In this case each order calculated or measured at different distances collapses on the same curve.

Suggested Citation

  • Bisignano, Andrea & Mortarini, Luca & Ferrero, Enrico, 2017. "Evaluation of high-order concentration statistics in a dispersing plume," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 474(C), pages 115-126.
    • Handle: RePEc:eee:phsmap:v:474:y:2017:i:c:p:115-126
    DOI: 10.1016/j.physa.2017.01.068
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    References listed on IDEAS

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    1. Kaplan, H., 2014. "An estimation of a passive scalar variances using a one-particle Lagrangian transport and diffusion model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 393(C), pages 1-9.
    2. Alessandrini, Stefano & Ferrero, Enrico, 2009. "A hybrid Lagrangian–Eulerian particle model for reacting pollutant dispersion in non-homogeneous non-isotropic turbulence," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(8), pages 1375-1387.
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