CUED Publications database

Modelling of spray flames with Doubly Conditional Moment Closure

Sitte, MP and Mastorakos, E (2017) Modelling of spray flames with Doubly Conditional Moment Closure. Flow, Turbulence and Combustion, 99. pp. 933-954. ISSN 1386-6184

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: conditional moment closure spray flames pre-vaporisation Ethanol
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 01 Nov 2017 20:05
Last Modified: 15 Apr 2021 06:00
DOI: 10.1007/s10494-017-9873-3