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Numerical assessment of subgrid scale models for scalar transport in large-eddy simulations of hydrogen-enriched fuels.
- Source :
-
International Journal of Hydrogen Energy . May2014, Vol. 39 Issue 14, p7173-7189. 17p. - Publication Year :
- 2014
-
Abstract
- Abstract: A comparison of two different models addressing the scalar transport in large-eddy simulations is conducted for a non-reacting jet and an experimental flame. A simple approach based on a gradient diffusion closure is compared against the linear-eddy model in the context of hydrogen-enriched non-reacting fuel jets and flames burning hydrogen-enriched mixtures. The results show that the gradient diffusion model is not valid as a subgrid scale model for large-eddy simulations of mixtures containing hydrogen. It produces unphysical scalar fields with unrealistic temperature distributions. Approaches based on the linear-eddy model can be used instead to obtain appropriate representation of the scalar field and more accurate predictions of the scalar transport and the temperature field. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 39
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 95812816
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2014.03.018