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Numerical Study of the Intermittency Region in Two-Fluid Turbulent Flow

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Abstract

In this work we describe interactions between turbulence and water-air surface in the ensemble-averaged picture where, instead of a sharp interface between the phases we deal with a “surface layer” where the probability of the surface position is nonzero. Changes of the turbulent kinetic energy and the characteristic size eddies influence the width of the “surface layer”. We present a numerical solution and convergence tests for the equation for the intermittency function \(\alpha \) which describes the probability of finding the water phase at a given point and time.

Keywords

  • Turbulent Kinetic Energy
  • Water Phase
  • Surface Position
  • Water Side
  • Eddy Size

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Acknowledgments

This work was supported by Deutscher Forschungsgemeinschaft (DFG) funding grant No. WA 3097/3-1, WA 3098/2-1 “Modeling of turbulence-interface interaction in two-fluid systems”.

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Correspondence to S. V. Kraheberger .

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Kraheberger, S.V., Wacławczyk, T., Wacławczyk, M. (2016). Numerical Study of the Intermittency Region in Two-Fluid Turbulent Flow. In: Peinke, J., Kampers, G., Oberlack, M., Wacławczyk, M., Talamelli, A. (eds) Progress in Turbulence VI. Springer Proceedings in Physics, vol 165. Springer, Cham. https://doi.org/10.1007/978-3-319-29130-7_50

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