Relevant bibliographies by topics / Micro-Scale Combustion Mechanisms

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Academic literature on the topic 'Micro-Scale Combustion Mechanisms'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Micro-Scale Combustion Mechanisms"

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Chen, Junjie, Baofang Liu, Xuhui Gao, and Deguang Xu. "Computational Fluid Dynamics Simulations of Lean Premixed Methane-Air Flame in a Micro-Channel Reactor Using Different Chemical Kinetics." International Journal of Chemical Reactor Engineering 14, no. 5 (2016): 1003–15. http://dx.doi.org/10.1515/ijcre-2015-0174.

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Abstract Flame temperature and structure are a useful tool for describing flame dynamics and flame stability, especially at the micro-scale. The objective of this study is to examine the effect of different kinetic models (that have been proven to accurately predict the macro-combustion behavior of hydrocarbons) on the combustion characteristics and the flame stability in microreactors, and to explore the applicability of these kinetic models at the micro-scale. Computational fluid dynamics (CFD) simulations of lean premixed methane-air flame in micro-channel reactors were carried out to exami
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Xu, Qianghui, Xiongyu Chen, Junyu Yang, Zhiying Liu, and Lin Shi. "Pore-scale study of coke combustion in a matrix-fracture system based on the micro-continuum approach." Physics of Fluids 34, no. 3 (2022): 036603. http://dx.doi.org/10.1063/5.0082518.

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In situ combustion is an advanced recovery technique used to exploit heavy oil in the fractured reservoirs that make up approximately one-third of global heavy-oil resources. However, the mesoscopic mechanisms of coke combustion in the multiscale matrix-fracture system are not well understood because of the difficulty of performing pore-resolved simulations. In the present study, a pore-resolved micro-continuum approach was used to investigate fully coupled thermal and reactive flows through fractured media that contain nanometer-range coke pores, micrometer-range matrix pores, and sub-millime
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Chen, Junjie, Longfei Yan, and Wenya Song. "Numerical simulation of micro-scale catalytic combustion characteristics with detailed chemical kinetic reaction mechanisms of hydrogen/air." Reaction Kinetics, Mechanisms and Catalysis 113, no. 1 (2014): 19–37. http://dx.doi.org/10.1007/s11144-014-0719-x.

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Elfasakhany, Ashraf, Mishal Alsehli, Bahaa Saleh, Ayman A. Aly, and Mohamed Bassuoni. "Renewable Pulverized Biomass Fuel for Internal Combustion Engines." Processes 8, no. 4 (2020): 465. http://dx.doi.org/10.3390/pr8040465.

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Biomass is currently one of the world’s major renewable energy sources. Biomass in a powder form has been recently proposed as the most encouraging of biomass contours, especially because it burns like a gas. In the current study, biomass powder was examined, for the first time, as a direct solid fuel in internal combustion engines. The aim of the current study was to investigate modeling tools for simulation of biomass powder in combustion engines (CE). The biomass powder applied was in a micro-scale size with a typical irregular shape; the powder length was in the range of 75−5800 μm, and th
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Ghonjizade-Samani, Farnaz, Laia Haurie, Ramón Malet, and Vera Realinho. "The Components’ Roles in Thermal Stability and Flammability of Cork Powder." Materials 16, no. 10 (2023): 3829. http://dx.doi.org/10.3390/ma16103829.

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In this study, an analysis of the influence of extractives, suberin and lignocellulosic components on the pyrolysis decomposition and fire reaction mechanisms of a cork oak powder from Quercus suber L. is presented. The summative chemical composition of cork powder was determined. Suberin was the main component at 40% of the total weight, followed by 24% of lignin, 19% of polysaccharides and 14% of extractives. The absorbance peaks of cork and its individual components were further analyzed by means of ATR-FTIR spectrometry. Thermogravimetric analysis (TGA) showed that the removal of extractiv
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Godini, Hamid Reza, Arash Rahimalimamaghani, Seyed Saeid Hosseini, Innokentij Bogatykh, and Fausto Gallucci. "Multiscale Analysis of Membrane-Assisted Integrated Reactors for CO2 Hydrogenation to Dimethyl Ether." Catalysts 13, no. 9 (2023): 1273. http://dx.doi.org/10.3390/catal13091273.

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The conceptual design and engineering of an integrated catalytic reactor requires a thorough understanding of the prevailing mechanisms and phenomena to ensure a safe operation while achieving desirable efficiency and product yields. The necessity and importance of these requirements are demonstrated in this investigation in the case of novel membrane-assisted reactors tailored for CO2 hydrogenation. Firstly, a carbon molecular sieve membrane was developed for simultaneous separation of CO2 from a hot post-combustion CO2-rich stream, followed by directing it along a packed-bed of hybrid CuO-Zn
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Li, Jun, Meilin Zhu, Chang Geng, et al. "A Molecular Understanding of the Flame Retardant Mechanism of Zinc Stannate/Polypropylene Composites via ReaxFF Simulations." Inorganics 11, no. 6 (2023): 233. http://dx.doi.org/10.3390/inorganics11060233.

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As an important new flame retardant, zinc stannate (ZS) shows wide application prospects due to its many advantages. However, the flame retardant mechanism of composites made with polymer combined with ZS is still unclear. In particular, there is a lack of molecular level description of the micro-scale flame retardant mechanism. The combustion mechanism through molecular simulation technology has become an important research paradigm in the field of fire, which can provide new insights for the development of new materials. This work studied the flame retardant mechanism of composites consisten
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Kumar, Sudarshan, Kaoru Maruta, and S. Minaev. "Experimental investigations on the combustion behavior of methane–air mixtures in a micro-scale radial combustor configuration." Journal of Micromechanics and Microengineering 17, no. 5 (2007): 900–908. http://dx.doi.org/10.1088/0960-1317/17/5/008.

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Hamid, Md Abdul, and Kyle Christopher Smith. "A Bottom-up Transient Theory for Concentration Polarization with Applicability to over-Limiting Current Conditions." ECS Meeting Abstracts MA2023-01, no. 25 (2023): 1669. http://dx.doi.org/10.1149/ma2023-01251669mtgabs.

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Renewable power sources have drawn interest due to scarcity of fossil fuels and associated pollution during their combustion-based power production. Renewables are projected to produce approximately 60% of US electricity generation by 2050, with an expected contribution of 2000 TW-h from wind power alone. To overcome the mismatch between electricity demand and intermittent supply, such power plants require large-scale energy-storage device integrated with them. In contrast to other technologies, redox flow batteries (RFBs) offer independently scalable power and energy capacity that is demanded
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Livkiss, Karlis, Blanca Andres, Abhishek Bhargava, and Patrick van Hees. "Characterization of stone wool properties for fire safety engineering calculations." Journal of Fire Sciences 36, no. 3 (2018): 202–23. http://dx.doi.org/10.1177/0734904118761818.

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Prediction of the insulating capability of building products in fire conditions would support the product development process. Stone wool insulation is a widely used material in fire barrier constructions. Due to the combustion of its organic content, the temperature inside stone wool can rise above the temperature of the exposed boundary. This temperature rise is difficult to predict. An extensive test program was performed to obtain the thermal and reaction kinetic properties of stone wool. The test methods included modified slug calorimeter, thermogravimetric analysis, differential scanning
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Conference papers on the topic "Micro-Scale Combustion Mechanisms"

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Cirigliano, Daniele, Felix Grimm, Peter Kutne, and Manfred Aigner. "Thermo-Structural Analysis of a Micro Gas Turbine Jet- and Recirculation- Stabilized Combustion Chamber." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-16285.

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Abstract Modern Micro Gas Turbines must be capable to operate at different load points, in order to fulfill the demand of Combined Heat and Power for which they are designed. The combustion chamber structures are therefore subjected to regularly variable thermal loads, yet remaining physically constrained at the rest of the structure. Hence, they experience variable metal temperatures, temperature gradients and thermal stresses which can lead to thermal failure. Typical failure mechanisms in combustion chambers are fatigue and creep. Oxidation can also play an important role. In the present st
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Grimm, Felix, Konstantinos Spoerl, Aurelia Drude, Timo Lingstädt, Peter Kutne, and Manfred Aigner. "Modeling Variants of Heat Loss in RANS Based Simulation of Jet-and-Recirculation Stabilized Combustion." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14160.

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Abstract In combustion systems operated at low-calorific conditions, physical boundary conditions for numerical modeling have to be chosen carefully. In particular, heat-loss mechanisms have to be taken into consideration, especially when they are expected to be in the order of magnitude of combustion power output itself. Therefore, in the presented paper, different modeling strategies for heat loss are taken into account and results are evaluated against experimental data in order to subsequently complete experimental findings with information on flow field and combustion. The studies are car
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Eigenbrod, Christian, Konstantin Klinkov, and Fernando Filho Fachini. "On the Effect of Pressure Oscillations on Droplet Autoignition." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45008.

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The paper discusses the possible interaction between combustion instabilities and induction times of droplets (and sprays) to autoignition. It is shown that acoustic pressure/temperature oscillations significantly affect the induction times of n-heptane droplets. This may play an additional role in low frequency dynamics and might be the main driver of high frequency dynamics. Experiments on single droplets in an acoustic field were used to validate numerical simulations on the autoignition of large n-heptane droplets. The simulations were then extended towards technical droplet sizes and a ga
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Vavaliya, Umesh, Ilgar Jafarli, Olga Kononova, Iveta Novakova, and Riho Motlep. "Investigation of UD hibride basalt fiber/epoxy composite mechanical properties depending on length." In 23rd International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering and Information Technologies, 2024. http://dx.doi.org/10.22616/erdev.2024.23.tf124.

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A basalt micro-fiber bundle (yarn), slightly twisted and impregnated by polymeric matrix with uniformly distributed within the matrix volume microscopical particles of oil shale ash (OSA) is used in textile reinforcement of a composite structure. Oil shale ash (OSA) is a powder, obtained in the combustion process, during generation of electricity at electrical power plants in Estonia. Polymeric matrix is epoxy resin. Mechanical properties of the hybrid composite - epoxy matrix (with OSA) reinforced by continuous basalt fibers depend significantly on the stress transfer and failure mechanisms o
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Heppner, Joshua D., David C. Walther, and Albert P. Pisano. "Leakage Flow Analysis for a MEMS Rotary Engine." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41868.

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An internal leakage flow analysis is presented for a MEMS fabricated rotary engine in order to establish design parameters for micro engine sealing systems. This research is part of the MEMS Rotary Engine Power System (REPS) group effort to develop a portable power system based on an integrated generator and Wankel rotary internal combustion engine. In order to have acceptable system efficiency, it is necessary to suppress internal leakage and thereby maintain a critical level of compression ratio. There are two inherent leakage paths in rotary engines, which result in blowby and reduced compr
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De Paepe, Ward, Massimiliano Renzi, Marina Montero Carrerro, Carlo Caligiuri, and Francesco Contino. "Micro Gas Turbine Cycle Humidification for Increased Flexibility: Numerical and Experimental Validation of Different Steam Injection Models." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76696.

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With the current shift from centralized to more decentralized power production, new opportunities arise for small-scale Combined Heat and Power (CHP) production units like micro Gas Turbines (mGTs). However, to fully embrace these opportunities, the current mGT technology has to become more flexible in terms of operation — decoupling the heat and power production in CHP mode — and in terms of fuel utilization — showing flexibility in the operation with different Lower Heating Value (LHV) fuels. Cycle humidification e.g. by performing steam injection, is a possible route to handle these problem
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Viswanathan, S., N. Rakovec, and D. E. Foster. "Microscale Study of Ash Accumulation Process in DPF Walls Using the Diesel Exhaust Filtration Analysis (DEFA) System." In ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92104.

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The Diesel Exhaust Filtration Analysis (DEFA) system, developed at the University of Wisconsin – Madison Engine Research Center (ERC), was used to study diesel particulate filters at the micro scale level. Previous measurements using the system have shown that there is a considerable effect of ash accumulation on the filter permeability evolution. Also the pressure drop and loading history are dependent on the number of times a filter had been filled and regenerated. The current investigation of the ash accumulation process has been done to understand its impact on the filter wall permeability
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Minotti, Angelo, and Enrico Sciubba. "LES Simulation of an Ultra-Micro Combustion Chamber Based on a 177 Reactions Mechanism." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24170.

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Goal of this paper is to investigate the performance of microcombustors, a field currently under rapid development in particular for propulsion, e.g., UAVs and micro-electrical power generators. This study focuses on a cylindrical microcombustor fed by methane and air, with diameter and height 0.025m and 0.06m respectively. A 3D LES simulation with the WALE subgrid scale models, the EDC combustion-chemistry model and the reduced GRIMech1.2 mechanism has been performed. The calculated maximum temperature inside the chamber, the gas exhaust temperature and the combustion efficiency are compared
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Zhang, Xintong, Yuzhen Lin, Xin Xue, Liang Zhang, and Chi Zhang. "Experimental Investigation of Convergent and Convergent-Divergent Micro Swirling Flame Behavior and Stabilization." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56944.

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With the miniaturization of mechanical and electrical systems, the demands for small-scale power resources with high energy density have promoted studies on small-scale combustors as well as methods to achieve stable small-scale combustion. In the present paper, a micro swirl injector for a small-scale combustor was designed to study the shape and stability of swirl flame in a 4 mm diameter quartz tube experimentally. The influences of fuel equivalence ratio, axial average velocity in the tube, and structure of the swirler exit were investigated under atmospheric pressure and ambient temperatu
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