Clements, A.G. orcid.org/0000-0003-3778-2248, Porter, R., Pranzitelli, A. et al. (1 more author) (2015) Evaluation of FSK models for radiative heat transfer under oxyfuel conditions. Journal of Quantitative Spectroscopy and Radiative Transfer, 151. pp. 67-75. ISSN 0022-4073
Abstract
Oxyfuel is a promising technology for carbon capture and storage (CCS) applied to combustion processes. It would be highly advantageous in the deployment of CCS to be able to model and optimise oxyfuel combustion, however the increased concentrations of CO2 and H2O under oxyfuel conditions modify several fundamental processes of combustion, including radiative heat transfer. This study uses benchmark narrow band radiation models to evaluate the influence of assumptions in global full-spectrum k-distribution (FSK) models, and whether they are suitable for modelling radiation in computational fluid dynamics (CFD) calculations of oxyfuel combustion. The statistical narrow band (SNB) and correlated-k (CK) models are used to calculate benchmark data for the radiative source term and heat flux, which are then compared to the results calculated from FSK models. Both the full-spectrum correlated k (FSCK) and the full-spectrum scaled k (FSSK) models are applied using up-to-date spectral data. The results show that the FSCK and FSSK methods achieve good agreement in the test cases. The FSCK method using a five-point Gauss quadrature scheme is recommended for CFD calculations in oxyfuel conditions, however there are still potential inaccuracies in cases with very wide variations in the ratio between CO2 and H2O concentrations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 Elsevier. This is an author produced version of a paper subsequently published in Journal of Quantitative Spectroscopy and Radiative Transfer. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Radiative transfer; Oxyfuel; Computational fluid dynamics; Full-spectrum k-distributions |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - FP6/FP7 RELCOM - 268191 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 04 Apr 2019 11:16 |
Last Modified: | 05 Apr 2019 16:25 |
Status: | Published |
Publisher: | Elsevier Ltd |
Refereed: | Yes |
Identification Number: | 10.1016/j.jqsrt.2014.09.019 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:89151 |
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