THERMAL SCIENCE

International Scientific Journal

Haixiang Zeng

,

Ping Wang

,

Qian Yu

,

Meenatchidevi Murugesan

,

Linsong Jiang

,

Prashant Shrotriya

DIRECT NUMERICAL SIMULATION OF TRIPLE FLAMES BY USING 2-D REACTION-DIFFUSION MANIFOLD TABULATION METHOD

ABSTRACT
The characteristics of partially-premixed flames is investigated by simulating a series of triple flames with different variations of chemical equivalent ratio. A 2-D reaction-diffusion manifold chemistry tabulation method is employed in the simulation and the results are compared with the CH4-air 19-step chemical reaction mechanism. The performance of these two mechanisms is then assessed by using direct numerical simulations coupled with GRI3.0 detailed mechanism. It is shown that both 2-D reaction-diffusion manifold table and 19-step simplified mechanism can describe the temperature and main products accurately, however, for some minor intermediary products, predictions from 2-D reaction-diffusion manifold table is observed to be better than 19-step simplified mechanism. Com-pared with the 19-step mechanism, 2-D reaction-diffusion manifold table only needs to solve only the transport equations for CO2 and N2 species, which greatly simplifies the solution process of chemical reaction and provides a reliable solution for the numerical simulation of turbulence with higher accuracy. This work indicates that as a relatively advanced kinetic simplified method, the reaction-diffusion manifold tabulation method can reduce the computational cost and at the same time retain the accuracy effectively.
KEYWORDS
REDIM table, Triple flames, Direct numerical simulation.
PAPER SUBMITTED: 2019-09-09
PAPER REVISED: 2020-06-17
PAPER ACCEPTED: 2020-06-19
PUBLISHED ONLINE: 2020-07-11
DOI REFERENCE: https://doi.org/10.2298/TSCI190909198Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 4, PAGES [2653 - 2664]
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Direct numerical simulation of triple flames by using 2-D reaction-diffusion manifold tabulation method

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence