Simulation of MILD combustion using Perfectly Stirred Reactor model

Chen, Zhi X.; Reddy, V. Mahendra; Ruan, S.; Doan, Nguyen Anh Khoa; Roberts, William L.; Swaminathan, Nedunchezhian

doi:10.1016/j.proci.2016.06.007

Cited by 50 publications

(41 citation statements)

References 36 publications

(68 reference statements)

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“…Chen at al. 36 modeled a partially premixed combustion case by tabulating the chemistry with a zero-dimensional (0D) perfect stirred reactor (PSR) configuration. The tabulation by means of a PSR may appear the most reasonable choice for combustion systems with high EGR levels.…”

Section: ■ Introductionmentioning

confidence: 99%

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

et al. 2018

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Section: ■ Introductionmentioning

confidence: 99%

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

et al. 2018

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“…For the transported PDF approach, the reaction rate function can be computed using the Arrhenius rate expression for the elementary reactions involved in the kinetic modeling. The performance of these two PDF approaches for MILD combustion is investigated by Chen et al (2017) using jet in hot coflow (JHC) burner of Dally et al (2002) as a validation case and reported that the results of tabulated chemistry approach compared well, except for CO, with the results of multi-environment PDF calculation by Lee et al (2015). The various turbulence combustion models available are tested for MILD combustion by De and Dongre (2015) and they observed that Lagrangian (transported) PDF models compared well with measured mean temperature and major species mass fractions.…”

Section: Modelingmentioning

confidence: 99%

Physical Insights on MILD Combustion From DNS

Swaminathan

2019

Front. Mech. Eng.

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MILD combustion is gaining interest in recent times because it is attractive for green combustion technology. However, its fundamental aspects are not well-understood. Recent progresses made on this topic using direct numerical simulation data are presented and discussed in a broader perspective. It is shown that a revised theory involving at least two chemical timescales is required to describe the inception of this combustion not only showing both autoignition and flame characteristics but also a strong interaction between these two phenomena. The reaction zones have complex morphological and topological features and the most probable shape is pancake-like structure implying micro-volume combustion under MILD conditions unlike the sheet-combustion in conventional cases. Relevance of the MILD (micro-volume) combustion to supersonic combustion is explored theoretically and qualitative support is shown and discussed using experimental and numerical Schlieren images.

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“…Numerical investigations on the JHC burners were carried out mainly using Reynolds Averaged Navier-Stokes (RANS) (Christo and Frassoldati et al, 2009;Mardani et al, 2010;Shabanian et al, 2012;Parente et al, 2015;Evans et al, 2015;Aminian et al, 2016;Mardani, 2017;Evans et al, 2017;Chen et al, 2017;Li et al, 2017;Li et al, 2018b) simulation and Large Eddy Simulation (LES) (Afarin et al, 2011;Ihme and See, 2011;Ihme et al, 2012;. LES can capture more faithfully the flow features while RANS is still important for preliminary investigations, because of its reduced computational cost.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Numerical Investigations of Jet-In-Hot-Coflow Burner With Reactor-Based Models

Parente

2020

Front. Mech. Eng.

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Moderate or Intense Low-oxygen Dilution (MILD) combustion is considered as one of the most promising novel combustion technologies, as it ensures high efficiency and very low emissions (NOx and CO). Because of the high level of dilution, the system reactivity is reduced and the chemical time scale is increased compared to conventional flames. Therefore, combustion models accounting for finite-rate chemistry are needed to study the characteristics of such flames. Reactor based models, such as the Partially Stirred Reactor and the Eddy Dissipation Concept models have been successfully used to model MILD combustion. This article describes recent progress and developments in the application of reactor based models for the simulation of the jet-in-hot-coflow burners that emulate MILD combustion. The main objective is to provide an overview about the current state of the art of reactor based models for turbulence-chemistry interactions in MILD regime and outline future prospects for the further development of such models. The literature acknowledges both Reynolds Averaged Navier Stokes and Large Eddy Simulations studies, with various operating conditions as well as different fuels. The results indicate that it is necessary to include both the mixing and chemical time scales explicitly in the combustion model formulation. Because of the distributed reaction area, according to recent investigations, Large Eddy Simulation grid can be sufficient to resolve the MILD combustion reacting structures. The present review underlines the importance of finite rate chemistry in MILD combustion simulations, as well as of providing reliable estimation of the characteristic time scales.

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Simulation of MILD combustion using Perfectly Stirred Reactor model

Cited by 50 publications

References 36 publications

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

Physical Insights on MILD Combustion From DNS

A Review of the Numerical Investigations of Jet-In-Hot-Coflow Burner With Reactor-Based Models

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