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Lookup NU author(s): Dr Andrew AspdenORCiD
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© 2018 Eastern States Section of the Combustion Institute. All rights reserved. This paper analyzes turbulence-chemistry interactions in high Karlovitz number ndodecane/ air flames, specifically focusing on effects of turbulence on chemical pathways using the DNS Database by Aspden et al. (Proc. Combust. Institute, 36 (2017) 2005-2016). The metrics used to quantify the changes in chemical pathways are heat released by reactions and the rate of formation/consumption of species. These metrics are integrated along volumes defined by flame normal along an isotherm surface and then averaged along this surface. In our recent work with lean premixed turbulent n-dodecane/air flames (Dasgupta et al., AIAA SciTech 2018), we found a limited sensitivity of these integrated quantities with increasing turbulence intensities. However, increasing turbulence intensities leads to significant variation of scalar concentrations and their gradients along these surfaces which may not be captured by these averaged quantities. This variation in turn can affect the reactions rates and heat release of the reactions and potentially lead to different pathways along these surfaces. This work locally conditions the metrics on curvature and fuel consumption rate and look at their variation with increasing turbulence intensities.
Author(s): Dasgupta D, Sun W, Day M, Aspden AJ, Lieuwen T
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018
Year of Conference: 2018
Acceptance date: 04/03/2018
Publisher: Eastern States Section of the Combustion Institute
URL: https://www.combustioninstitute.org/ci-event/2018-essci-spring-technical-meeting/
