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Title: Influence of Bubbles on the Turbulence Anisotropy

Abstract

Direct numerical simulation (DNS) with interface tracking of turbulent bubbly flows is becoming a major tool in advancing our knowledge in the area of multiphase modeling research. A comprehensive analysis of the turbulent flow structure allows us to evaluate the state-of-the-art computational multiphase fluid dynamics (CMFD) models and to propose new closure laws. The presented research will demonstrate how the multiphase DNS data can inform the development of computational fluid dynamics (CFD) models. In particular, the Reynolds stress distribution will be evaluated for single- and two-phase bubbly flows and the level of turbulence anisotropy will be measured in several scenarios. The results will help determine if the isotropic turbulent models are suitable for bubbly flow applications or if there is a strong need to apply and develop Reynolds-stress turbulent models for two-phase flow CFD modeling.

Authors:
 [1]
  1. Department of Nuclear Engineering, North Carolina State University, Raleigh, NC 27695
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1565077
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Fluids Engineering
Additional Journal Information:
Journal Volume: 135; Journal Issue: 5; Journal ID: ISSN 0098-2202
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
Engineering

Citation Formats

Bolotnov, Igor A. Influence of Bubbles on the Turbulence Anisotropy. United States: N. p., 2013. Web. doi:10.1115/1.4023651.
Bolotnov, Igor A. Influence of Bubbles on the Turbulence Anisotropy. United States. https://doi.org/10.1115/1.4023651
Bolotnov, Igor A. 2013. "Influence of Bubbles on the Turbulence Anisotropy". United States. https://doi.org/10.1115/1.4023651.
@article{osti_1565077,
title = {Influence of Bubbles on the Turbulence Anisotropy},
author = {Bolotnov, Igor A.},
abstractNote = {Direct numerical simulation (DNS) with interface tracking of turbulent bubbly flows is becoming a major tool in advancing our knowledge in the area of multiphase modeling research. A comprehensive analysis of the turbulent flow structure allows us to evaluate the state-of-the-art computational multiphase fluid dynamics (CMFD) models and to propose new closure laws. The presented research will demonstrate how the multiphase DNS data can inform the development of computational fluid dynamics (CFD) models. In particular, the Reynolds stress distribution will be evaluated for single- and two-phase bubbly flows and the level of turbulence anisotropy will be measured in several scenarios. The results will help determine if the isotropic turbulent models are suitable for bubbly flow applications or if there is a strong need to apply and develop Reynolds-stress turbulent models for two-phase flow CFD modeling.},
doi = {10.1115/1.4023651},
url = {https://www.osti.gov/biblio/1565077}, journal = {Journal of Fluids Engineering},
issn = {0098-2202},
number = 5,
volume = 135,
place = {United States},
year = {Wed Apr 03 00:00:00 EDT 2013},
month = {Wed Apr 03 00:00:00 EDT 2013}
}

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