Modelling of spray flames with Doubly Conditional Moment Closure
Flow, Turbulence and Combustion
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Sitte, M., & Mastorakos, E. (2017). Modelling of spray flames with Doubly Conditional Moment Closure. Flow, Turbulence and Combustion, 99 (3-4), 933-954. https://doi.org/10.1007/s10494-017-9873-3
Simulations of a pilot-stabilised flame in a uniformly dispersed ethanol spray are performed using a Doubly Conditional Moment Closure (DCMC) model. The DCMC equation for spray combustion is derived, using the mixture fraction and the reaction progress variable as conditioning variables, including droplet evaporation and differential diffusion terms. A set of closure sub-models is suggested to allow for a first, preliminary application of the DCMC model to the test case presented here. In particular, the DCMC model is used to provide complete closure for the Favre-averaged spray terms in the mean and variance equations of the conditioning variables and the present test case is used to assess the importance of each term. Comparison with experimental data shows a promising overall agreement, while differences are related to modelling choices.
conditional moment closure, spray flames, pre-vaporisation, Ethanol
M.P. Sitte gratefully acknowledges funding from the Gates Cambridge Trust. The simulations were performed using the ARCHER UK National Supercomputing Service (http://www.archer.ac.uk) with computational time given by the UK Consortium on Turbulent Reacting Flows.
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External DOI: https://doi.org/10.1007/s10494-017-9873-3
This record's URL: https://www.repository.cam.ac.uk/handle/1810/273574
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/
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