Direct numerical simulation of catalytic combustion in a multi-channel monolith reactor using personal computers with emerging architectures

Choudary, Chekuri; Mazumder, Sandip

doi:10.1016/j.compchemeng.2013.11.002

Cited by 7 publications

(3 citation statements)

References 36 publications

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“…Numerical simulations [45][46][47][48][49][50], in conjunction with experiments [51,52], have played an important role in catalytic combustion technology by providing analysis of specific systems, and subsequently the evaluation of potential performance advantages relative to conventional gas-phase combustion systems. Computer simulations are assisting in design and optimization of small-scale catalytic combustion systems, thereby providing important and unique insights into the nature of combustion itself [53,54].…”

Section: Physical System and Modeling Approachmentioning

confidence: 99%

“…subsequently the evaluation of potential performance advantages relative to conventional gas-phase combustion systems. Computer simulations are assisting in design and optimization of small-scale catalytic combustion systems, thereby providing important and unique insights into the nature of combustion itself [53,54]. The concept of CATHLEAN hybrid catalytic combustion systems [21,40] has been proposed to improve the operating conditions required for existing gas turbine combustors, thereby greatly reducing the technical risk associated with their commercial applications.…”

Section: R E T R a C T E Dmentioning

confidence: 99%

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RETRACTED: Catalytic Combustion Characteristics of Methane-Air Mixtures in Small-Scale Systems at Elevated Temperatures

Chen

Gao

2018

Catalysts

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The catalytic combustion characteristics of methane-air mixtures in small-scale systems were investigated at elevated temperatures, with particular emphasis on identifying the main factors that affect formation and removal of combustion-generated pollutants. Computational fluid dynamics simulations were performed using detailed chemical kinetic mechanisms, and more insights were offered into the phenomena occurring in the temperature range where homogeneous and heterogeneous reaction pathways are both important. Reaction engineering analysis was performed to provide an in-depth understanding of how to achieve low emissions of pollutants. Spatial distributions of the major species involved were presented to gain insight into the interplay between the two competing pathways involved. The results indicated that the distribution of oxidized products depends critically on the feed composition, dimension, temperature, and pressure. Small-scale catalytic systems enable low emissions of pollutants even in a high temperature environment, along with high combustion efficiency. The interplay between the two competing pathways via radicals is strong, and the heterogeneous pathway can significantly inhibit the homogeneous pathway. The inhibiting effect also accounts for the low emissions of nitrogen oxides. Almost all of the nitrogen oxides emitted by small-scale catalytic systems are nitric oxide. Catalytic combustion technology can be used to reduce the formation of undesired products, especially pollutant nitrogen oxide gases far below what can be achieved without catalysts. Recommendations for the design of small-scale catalytic systems are provided.

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Section: Physical System and Modeling Approachmentioning

confidence: 99%

Section: R E T R a C T E Dmentioning

confidence: 99%

RETRACTED: Catalytic Combustion Characteristics of Methane-Air Mixtures in Small-Scale Systems at Elevated Temperatures

Chen

Gao

2018

Catalysts

View full text Add to dashboard Cite

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“…Publications presenting the calculation of multi-channel systems resolving the 3D geometry and using detailed chemistry are scarce in literature. Some papers focus on numerical methods and computer resources (Kumar and Mazumder 2010), others using new computer architectures (Choudary and Mazumder 2014). Generally, there is a lack of publications where the results of numerical calculations are compared to spatially resolved experimental data from inside the channels.…”

Section: Resolved Modelling Of Monoliths (Honeycomb-structured Catalysts)mentioning

confidence: 99%