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Turbulence Modelling of a Single-Phase Flow Cyclone Gasifier
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-8360-9051
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-6958-5508
2017 (English)In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 9, no 9, 779-799 p., 79329Article in journal, Editorial material (Refereed) Published
Abstract [en]

The current work aims to make a foundation for an engineering design of a cyclone gasifier to be able not only to predict its flow field with a suitable accuracy but also to investigate a large number of design alternatives with limited computer resources. A good single-phase flow model that can form the basis in an Euler-Lagrange model for multi-phase flow is also necessary for modelling the reacting flow inside a cyclone gasifier. The present paper provides an objective comparison between several popular turbulence modelling options including standard k-ε and SST with curvature corrections, SSG-RSM and LES Smagorinsky models, for the single-phase flow inside cyclone separators/gasifiers that can serve as a guide for further work on the reacting multi-phase flow inside cyclone gasifiers and similar devices. A detailed comparison between the models and experimental data for the mean velocity and fluctuating parts of the velocity profiles are presented. Furthermore, the capabilities of the turbulence models to capture the physical phenomena present in a cyclone gasifier that affects the design process are investigated.

Place, publisher, year, edition, pages
Scientific Research Publishing, 2017. Vol. 9, no 9, 779-799 p., 79329
Keyword [en]
Cyclone Gasifier, Turbulence Modelling, Swirling Flow Pattern, Secondary Flow
National Category
Energy Engineering Fluid Mechanics and Acoustics
Research subject
Energy Engineering; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-66442DOI: 10.4236/eng.2017.99047OAI: oai:DiVA.org:ltu-66442DiVA: diva2:1155306
Note

Validerad;2017;Nivå 1;2017-11-10 (andbra)

Available from: 2017-11-07 Created: 2017-11-07 Last updated: 2017-11-10Bibliographically approved

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