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Title: A numerical comparison of precipitating turbulent flows between large‐eddy simulation and one‐dimensional turbulence

Journal Article · · AIChE Journal
DOI:https://doi.org/10.1002/aic.14870· OSTI ID:1400714
 [1];  [1];  [1];  [1];  [2];  [2]
  1. Dept. of Chemical Engineering Institute for Clean and Secure Energy University of Utah Salt Lake City UT 84112
  2. Dept. of Chemical Engineering Brigham Young University Provo UT 84602

This study presents the results of computational fluid dynamics simulations of a multiphase, reacting, turbulent mixing layer in an idealized geometry. The purpose is to compare large‐eddy simulation (LES) to one‐dimensional turbulence (ODT) and examine the trends of the flow under differing mixing conditions. Aqueous streams are mixed together to precipitate polymorphs of calcium carbonate. The polymorphs of calcium carbonate are tracked numerically using population balance equations (PBE). Each PBE contains all of the relevant physical models to track the particle evolution including nucleation, growth, and aggregation. A simple subgrid mixing model that is convenient for use with PBEs was implemented in the LES code. The higher spatial resolution achievable with ODT allowed an investigation on the effect of resolution on the mixing‐model error. The Reynolds number of the flow is varied and is shown to cause a decrease in average particle sizes with higher mixing rates. © 2015 American Institute of Chemical Engineers AIChE J , 61: 3185–3197, 2015

Sponsoring Organization:
USDOE
OSTI ID:
1400714
Journal Information:
AIChE Journal, Journal Name: AIChE Journal Vol. 61 Journal Issue: 10; ISSN 0001-1541
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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