Euler-euler large eddy simulation of a square cross-sectional bubble column using the Neptune-CFD code

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Abstract

In this work, we report on Euler-Euler large eddy simulation (EELES) of dispersed bubbly flow in a square cross-sectional bubble column. Simulations are performed using the Neptune-CFD package, and results processed using the SALOME platform. The motivation to undertake this study is to check our implementation of the Smagorinsky subgrid-scale (SGS) model into Neptune-CFD. We outline all the physical models used, and we present instantaneous realizations of velocity and void fraction fields in order to illustrate the structure of the turbulence field, and long-time averaged results, to compare with analogous simulations performed using the CFX-4 code and experimental data. The same physical models and constants have been used in both the CFX-4 and Neptune-CFD codes, except the SGS model, which is Smagorinsky in case of Neptune-CFD and a one-equation model in CFX-4. The results obtained with EELES compare reasonably well with experiment, meaning in particular that the implementations have been successful. Some perspectives on the further use of EELES are also given. Copyright © 2009 B. Ni?ceno et al.

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Ničeno, B., Boucker, M., & Smith, B. L. (2009). Euler-euler large eddy simulation of a square cross-sectional bubble column using the Neptune-CFD code. Science and Technology of Nuclear Installations, 2009. https://doi.org/10.1155/2009/410272

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