Chemical Kinetic Reaction Mechanism Study For Autoignition Of N Heptane Blend With Toluene And 13 Cycloheptadiene

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Chemical Kinetic Reaction Mechanism Study for Autoignition of N-heptane Blend with Toluene and 1,3-cycloheptadiene

Author : Shenghui Qin
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.:/5 (123 download)

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Book Synopsis Chemical Kinetic Reaction Mechanism Study for Autoignition of N-heptane Blend with Toluene and 1,3-cycloheptadiene by : Shenghui Qin

Download or read book Chemical Kinetic Reaction Mechanism Study for Autoignition of N-heptane Blend with Toluene and 1,3-cycloheptadiene written by Shenghui Qin and published by . This book was released on 2020 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fossil fuel combustion is still a significant source of world energy consumption, and with the continuous development of society, human demand for energy is growing. The internal combustion engine is widely used for transportation, and its energy source is fuel combustion. The internal combustion engine has the advantage of high thermal efficiency, low cost, and a wide range of power. Improving combustion efficiency and reducing the emission of the internal combustion engine is considered a fundamental goal by combustion-related researchers all over the world. Three-component (n-heptane, iso-octane, and toluene) blended Toluene Reference Fuels (TRF) are widely used for modeling gasoline combustion. Since the detailed fuel surrogate mechanism is complicated, we study the chemical kinetic behavior of the blend of toluene and n-heptane to reduce the difficulty. This thesis discusses the construction of the kinetic reaction mechanisms of toluene, n-heptane, 1,3-cycloheptadiene (CHPD), and their blends. The study regarding CHPD is to compare the resonance stabilization of the allylic and benzylic structures. Macroscopically, the proposed models are then validated using ignition delay times across a wide range of experimental conditions from the literature and are compared with existing models. The validation and comparison results show that our proposed model is reasonably accurate. Then this thesis conducts the reaction pathway analysis and elaborates on the oxidation pathway of CHPD, n-heptane, and toluene. What is more, the sensitivity analysis combines the rate of production analysis to show the most sensitive and vital reactions in target fuel oxidation. Regarding the blended fuels, this study finds that CHPD boosts n-heptane oxidation while toluene inhibits the oxidation. CHPD is more active than n-heptane in competing for oxygen, while toluene acts like an inert when the temperature is lower than 850 K. At higher temperatures, more toluene oxidation pathways are available, and the benzene ring will open more easily, so toluene will not inhibit the overall reactivity. With higher initial pressures and higher equivalence ratios, negative temperature coefficient regions are more profound for all species and their blends. The ignition delay trend of a blended fuel will be close to the fuel which constitutes a significant portion of the mixture"--Author's abstract.

Autoignition Study of Ethanol and Heptane in a Rapid Compression Machine

Author : Varun Anthony Davies
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (95 download)

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Book Synopsis Autoignition Study of Ethanol and Heptane in a Rapid Compression Machine by : Varun Anthony Davies

Download or read book Autoignition Study of Ethanol and Heptane in a Rapid Compression Machine written by Varun Anthony Davies and published by . This book was released on 2015 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical fuels are a complex mixture of thousands of hydrocarbon compounds, making it challenging and difficult to study their combustion behavior. It's generally agreed that in order to study these complex practical fuels a much simpler approach of studying simple fuel surrogates containing limited number of components is more feasible. Ethanol and n-heptane have been studied as primary reference fuels in the surrogate study of gasoline and diesel over the past few decades. The objective of the following thesis has been to study the autoignition characteristics of ethanol and n-heptane and validate chemical kinetic mechanisms. The validation of a chemical kinetic mechanism provides a deeper insight into the combustion behavior of the fuels which can be further used to study advanced combustion concepts. Experiments have been conducted on the rapid compression machine (RCM) and validated against mechanisms from literature study. Rapid compression machines have been primarily used to study chemical kinetics at low to intermediate temperatures and high pressures for their accuracy and reproducibility. For the following study experiments span over a range of temperature (650-1000 K), pressure (10, 15 and 20 bar) and equivalence ratio ([phi]=0.3, 0.5, 1). Experimental data based on the adiabatic volumetric expansion approach have been modeled numerically using the Sandia SENKIN code in conjunction with CHEMKIN. Experiments have been primarily focused on validating kinetic mechanisms at low to intermediate temperatures and elevated pressures. Ignition delay time data from experiments have been deduced based on the pressure and time histories. A brute sensitivity and flux analysis has been performed to reveal the key sensitive reactions and the dominant reaction pathways followed under the present experimental conditions. Improvements have been suggested and discrepancies noted in order to develop a valid chemical kinetic mechanism. Under the present experimental conditions for the study of ethanol, reactions involving hydroperoxyl radicals, namely C2H5OH+HȮ2 and CH3CHO+ HȮ2 as well as the formation of H2O2 from HȮ2 radical and its subsequent decomposition have been found to be sensitive. Based on the following, improvements and developements have been suggested to increase the accuracy and predictability of the mechanisms studied. Ignition delay data from experiments have been compared against those obtained from the mechanism used in the study for n-heptane. Discrepancies have been found in the low temperature region, with the mechanism under predicting the first ignition delay. The causes for the discrepancy have been noted to be due to the NTC behaviour exhibited during the two stage ignition of n-heptane. At low temperatures the reaction pathway proceeded by chain branching mainly due to the ketohydroperoxide species reaction pathway has been analysed. As the temperature of the reaction increases the reaction pathway is dominated by the ȮOH species propagation resulting in the formation of conjugate olefins and [Beta]-decomposition products, a further investigation of which can help improve the predictability of the mechanism.

Reduced Chemical Kinetic Reaction Mechanisms for Hydrocarbon Fuels

Author : J. M. MORRISSEY
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (357 download)

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Book Synopsis Reduced Chemical Kinetic Reaction Mechanisms for Hydrocarbon Fuels by : J. M. MORRISSEY

Download or read book Reduced Chemical Kinetic Reaction Mechanisms for Hydrocarbon Fuels written by J. M. MORRISSEY and published by . This book was released on 1995 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Reduced Chemical Kinetic Reaction Mechanisms for Hydrocarbon Fuels

Author : J. M. MORRISSEY
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (357 download)

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Book Synopsis Reduced Chemical Kinetic Reaction Mechanisms for Hydrocarbon Fuels by : J. M. MORRISSEY

Chemical Kinetic Study of Toluene Oxidation Under Premixed and Nonpremixed Conditions

Author : C. - Chen
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis Chemical Kinetic Study of Toluene Oxidation Under Premixed and Nonpremixed Conditions by : C. - Chen

Download or read book Chemical Kinetic Study of Toluene Oxidation Under Premixed and Nonpremixed Conditions written by C. - Chen and published by . This book was released on 2003 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was performed to elucidate the chemical-kinetic mechanism of combustion of toluene. A detailed chemical-kinetic mechanism for toluene was improved by adding a more accurate description of the phenyl + O{sub 2} reaction channels, toluene decomposition reactions and the benzyl + O reaction. Results of the chemical kinetic mechanism are compared with experimental data obtained from premixed and non-premixed systems. Under premixed conditions, predicted ignition delay times are compared with new experimental data obtained in shock tube. Also, calculated species concentration histories are compared to experimental flow reactor data from the literature. Under non-premixed conditions, critical conditions of extinction and autoignition were measured in strained laminar flows in the counterflow configuration. Numerical calculations are performed using the chemical-kinetic mechanism at conditions corresponding to those in the experiments. Critical conditions of extinction and autoignition are predicted and compared with the experimental data. Comparisons between the model predictions and experimental results of ignition delay times in shock tube, and extinction and autoignition in non-premixed systems show that the chemical-kinetic mechanism predicts that toluene/air is overall less reactive than observed in the experiments. For both premixed and non-premixed systems, sensitivity analysis was used to identify the reaction rate constants that control the overall rate of oxidation in each of the systems considered. Under shock tube conditions, the reactions that influence ignition delay time are H + O{sub 2} chain branching, the toluene decomposition reaction to give an H atom, and the toluene + H abstraction reaction. The reactions that influence autoignition in non-premixed systems involve the benzyl + HO{sub 2} reaction and the phenyl + O{sub 2} reaction.

The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion

Author : Peter R. Lindstedt
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (61 download)

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Book Synopsis The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion by : Peter R. Lindstedt

Download or read book The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion written by Peter R. Lindstedt and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Detailed Chemical Kinetic Reaction Mechanisms for Autoignition of Isomers of Heptane Under Rapid Compression

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

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Book Synopsis Detailed Chemical Kinetic Reaction Mechanisms for Autoignition of Isomers of Heptane Under Rapid Compression by :

Download or read book Detailed Chemical Kinetic Reaction Mechanisms for Autoignition of Isomers of Heptane Under Rapid Compression written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed chemical kinetic reaction mechanisms are developed for combustion of all nine isomers of heptane (C--H16), and these mechanisms are tested by simulating autoignition of each isomer under rapid compression machine conditions. The reaction mechanisms focus on the manner in which the molecular structure of each isomer determines the rates and product distributions of possible classes of reactions. The reaction pathways emphasize the importance of alkylperoxy radical isomerizations and addition reactions of molecular oxygen to alkyl and hydroperoxyalkyl radicals. A new reaction group has been added to past models, in which hydroperoxyalkyl radicals that originated with abstraction of an H atom from a tertiary site in the parent heptane molecule are assigned new reaction sequences involving additional internal H atom abstractions not previously allowed. This process accelerates autoignition in fuels with tertiary C-H bonds in the parent fuel. In addition, the rates of hydroperoxyalkylperoxy radical isomerization reactions have all been reduced so that they are now equal to rates of analogous alkylperoxy radical isomerizations, significantly improving agreement between computed and experimental ignition delay times in the rapid compression machine. Computed ignition delay times agree well with experimental results in the few cases where experiments have been carried out for specific heptane isomers, and predictive model calculations are reported for the remaining isomers. The computed results fall into three general groups; the first consists of the most reactive isomers, including n-heptane, 2-methyl hexane and 3-methyl hexane. The second group consists of the least reactive isomers, including 2,2-dimethyl pentane, 3,3-dimethyl pentane, 2,3-dimethyl pentane, 2,4-dimethyl pentane and 2,2,3-trimethyl butane. The remaining isomer, 3-ethyl pentane, was observed computationally to have an intermediate level of reactivity. These observations are generally consistent with knocking tendencies of these isomers, as measured by octane ratings, although the correlations are only approximate.

Reduction of Large Detailed Chemical Kinetic Mechanisms for Autoignition Using Joint Analyses of Reaction Rates and Sensitivities

Download Reduction of Large Detailed Chemical Kinetic Mechanisms for Autoignition Using Joint Analyses of Reaction Rates and Sensitivities PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Reduction of Large Detailed Chemical Kinetic Mechanisms for Autoignition Using Joint Analyses of Reaction Rates and Sensitivities by :

Download or read book Reduction of Large Detailed Chemical Kinetic Mechanisms for Autoignition Using Joint Analyses of Reaction Rates and Sensitivities written by and published by . This book was released on 2006 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new technique of reduction of detailed mechanisms for autoignition, which is based on two analysis methods is described. An analysis of reaction rates is coupled to an analysis of reaction sensitivity for the detection of redundant reactions. Thresholds associated with the two analyses have a great influence on the size and efficiency of the reduced mechanism. Rules of selection of the thresholds are defined. The reduction technique has been successfully applied to detailed autoignition mechanisms of two reference hydrocarbons: n-heptane and iso-octane. The efficiency of the technique and the ability of the reduced mechanisms to reproduce well the results generated by the full mechanism are discussed. A speedup of calculations by a factor of 5.9 for n-heptane mechanism and by a factor of 16.7 for iso-octane mechanism is obtained without losing accuracy of the prediction of autoignition delay times and concentrations of intermediate species.

Chemical Kinetic Study of Toluene Oxidation

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

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Book Synopsis Chemical Kinetic Study of Toluene Oxidation by :

Download or read book Chemical Kinetic Study of Toluene Oxidation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was performed to elucidate the chemical-kinetic mechanism of combustion of toluene. A detailed chemical-kinetic mechanism for toluene was improved by adding a more accurate description of the phenyl + O2 reaction channels, toluene decomposition reactions and the benzyl + 0 reaction. Results of the chemical kinetic mechanism are compared with experimental data obtained from premixed and nonpremixed systems. Under premixed conditions, predicted ignition delay times are compared with new experimental data obtained in shock tube. Also, calculated species concentration histories are compared to experimental flow reactor data from the literature. Under nonpremixed conditions, critical conditions of extinction and autoignition were measured in strained laminar flows in the counterflow configuration. Numerical calculations are performed using the chemical-kinetic mechanism at conditions corresponding to those in the experiments. Critical conditions of extinction and autoignition are predicted and compared with the experimental data. Comparisons between the model predictions and experimental results of ignition delay times in shock tube, and extinction and autoignition in nonpremixed systems show that the chemical-kinetic mechanism predicts that toluene/air is overall less reactive than observed in the experiments. For both premixed and nonpremixed systems, sensitivity analysis was used to identify the reaction rate constants that control the overall rate of oxidation in each of the systems considered. Under shock tube conditions, the reactions that influence ignition delay time are H + O2 chain branching, the toluene decomposition reaction to give an H atom, and the toluene + H abstraction reaction. The reactions that influence autoignition in nonpremixed systems involve the benzyl + HO2 reaction and the phenyl + O2 reaction.

A Kinetic Modeling Study on the Oxidation of Primary Reference Fuel?Toluene Mixtures Including Cross Reactions Between Aromatics and Aliphatics

Download A Kinetic Modeling Study on the Oxidation of Primary Reference Fuel?Toluene Mixtures Including Cross Reactions Between Aromatics and Aliphatics PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis A Kinetic Modeling Study on the Oxidation of Primary Reference Fuel?Toluene Mixtures Including Cross Reactions Between Aromatics and Aliphatics by :

Download or read book A Kinetic Modeling Study on the Oxidation of Primary Reference Fuel?Toluene Mixtures Including Cross Reactions Between Aromatics and Aliphatics written by and published by . This book was released on 2008 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed chemical kinetic model for the mixtures of Primary Reference Fuel (PRF: n-heptane and iso-octane) and toluene has been proposed. This model is divided into three parts; a PRF mechanism [T. Ogura et al., Energy & Fuels 21 (2007) 3233-3239], toluene sub-mechanism and cross reactions between PRF and toluene. Toluene sub-mechanism includes the low temperature kinetics relevant to engine conditions. A chemical kinetic mechanism proposed by Pitz et al. [Proc. the 2nd Joint Meeting of the U.S. Combust. Institute (2001)] was used as a starting model and modified by updating rate coefficients. Theoretical estimations of rate coefficients were performed for toluene and benzyl radical reactions important at low temperatures. Cross-reactions between alkane, alkene, and aromatics were also included in order to account for the acceleration by the addition of toluene into iso-octane recently found in the shock tube study of the ignition delay [Y. Sakai et al, SAE 2007-01-4014 (2007)]. Validations of the model were performed with existing shock tube and flow tube data. The model well predicts the ignition characteristics of toluene and PRF/Toluene mixtures under the wide range of temperatures (500-1700 K) and pressures (2-50 atm). It is found that reactions of benzyl radical with oxygen molecule determine the reactivity of toluene at low temperature. Although the effect of toluene addition to iso-octane is not fully resolved, the reactions of alkene with benzyl radical have the possibility to account for the kinetic interactions between PRF and toluene.

Low-temperature Combustion and Autoignition

Author : M.J. Pilling
Publisher : Elsevier
ISBN 13 : 0080535658
Total Pages : 823 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Low-temperature Combustion and Autoignition by : M.J. Pilling

Download or read book Low-temperature Combustion and Autoignition written by M.J. Pilling and published by Elsevier. This book was released on 1997-11-27 with total page 823 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion has played a central role in the development of our civilization which it maintains today as its predominant source of energy. The aim of this book is to provide an understanding of both fundamental and applied aspects of low-temperature combustion chemistry and autoignition. The topic is rooted in classical observational science and has grown, through an increasing understanding of the linkage of the phenomenology to coupled chemical reactions, to quite profound advances in the chemical kinetics of both complex and elementary reactions. The driving force has been both the intrinsic interest of an old and intriguing phenomenon and the centrality of its applications to our economic prosperity. The volume provides a coherent view of the subject while, at the same time, each chapter is self-contained.

Extinction and Autoignition of N-Heptane in Counterflow Configuration

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Extinction and Autoignition of N-Heptane in Counterflow Configuration by :

Download or read book Extinction and Autoignition of N-Heptane in Counterflow Configuration written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study is performed to elucidate the mechanisms of extinction and autoignition of n-heptane in strained laminar flows under nonpremixed conditions. A previously developed detailed mechanism made UP of 2540 reversible elementary reactions among 557 species is the starting point for the study. The detailed mechanism was previously used to calculate ignition delay times in homogeneous reactors, and concentration histories of a number of species in plug-flow and jet-stirred reactors. An intermediate mechanism made up of 1282 reversible elementary reactions among 282 species and a short mechanism made up of 770 reversible elementary reactions among 160 species are assembled from this detailed mechanism. Ignition delay times in an isochoric homogeneous reactor calculated using the intermediate and the short mechanism are found to agree well with those calculated using the detailed mechanism. The intermediate and the short mechanism are used to calculate extinction and autoignition of n-heptane in strained laminar flows. Steady laminar flow of two counter flowing Streams toward a stagnation plane is considered. One stream made up of prevaporized n-heptane and nitrogen is injected from the fuel boundary and the other stream made up of air and nitrogen is injected from the oxidizer boundary. Critical conditions of extinction and autoignition given by the strain rate, temperature and concentrations of the reactants at the boundaries, are calculated. The results are found to agree well with experiments. Sensitivity analysis is carried out to evaluate the influence of various elementary reactions on autoignition. At all values of the strain rate investigated here, high temperature chemical processes are found to control autoignition. In general, the influence of low temperature chemistry is found to increase with decreasing strain. A key finding of the present study is that strain has more influence on low temperature chemistry than the temperature of the reactants.

Combustion of N-heptane in a Shock Tube and in a Stirred Reactor

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (683 download)

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Book Synopsis Combustion of N-heptane in a Shock Tube and in a Stirred Reactor by :

Download or read book Combustion of N-heptane in a Shock Tube and in a Stirred Reactor written by and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed chemical kinetic reaction mechanism is used to study the oxidation of n-heptane under several classes of conditions. Experimental results from ignition behind reflected shock waves and in a rapid compression machine were used to develop and validate the reaction mechanism at relatively high temperatures, while data from a continuously stirred tank reactor (cstr) were used to refine the low temperature portions of the reaction mechanism. In addition to the detailed kinetic modeling, a global or lumped kinetic mechanism was used to study the same experimental results. The lumped model was able to identify key reactions and reaction paths that were most sensitive in each experimental regime and provide important guidance for the detailed modeling effort. In each set of experiments, a region of negative temperature coefficient (NTC) was observed. Variation in pressure from 5 to 40 bars were found to change the temperature range over which the NTC region occurred. Both the lumped and detailed kinetic models reproduced the measured results in each type of experiments, including the features of the NTC region, and the specific elementary reactions and reaction paths responsible for this behavior were identified and rate expressions for these reactions were determined.

The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion

Author : Peter R. Lindstedt
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (61 download)

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Book Synopsis The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion by : Peter R. Lindstedt

Download or read book The Development of Detailed Chemical Kinetics Models for N-heptane and Toluene Combustion written by Peter R. Lindstedt and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Detailed Chemical Kinetic Reaction Mechanism for N-Alkane Hydrocarbons from N-Octane to N-Hexadecane

Author :
Publisher :
ISBN 13 :
Total Pages : 69 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis A Detailed Chemical Kinetic Reaction Mechanism for N-Alkane Hydrocarbons from N-Octane to N-Hexadecane by :

Download or read book A Detailed Chemical Kinetic Reaction Mechanism for N-Alkane Hydrocarbons from N-Octane to N-Hexadecane written by and published by . This book was released on 2007 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed chemical kinetic reaction mechanisms have been developed to describe the pyrolysis and oxidation of the n-alkanes, including n-octane (n-CH1), n-nonane (n-C9H20), n-decane (n-C10H22), n-undecane (n-C11H24), n-dodecane (n-C12H26), n-tridecane (n-C13H28), n-tetradecane (n-C14H30), n-pentadecane (n-C15H32), and n-hexadecane (n-C16H34). These mechanisms include both high temperature and low temperature reaction pathways. The mechanisms are based on previous mechanisms for n-heptane, using the same reaction class mechanism construction developed initially for n-heptane. Individual reaction class rules are as simple as possible in order to focus on the parallelism between all of the n-alkane fuels included in the mechanisms, and there is an intent to develop these mechanisms further in the future to incorporate greater levels of accuracy and predictive capability. Several of these areas for improvement are identified and explained in detail. These mechanisms are validated through comparisons between computed and experimental data from as many different sources as possible. In addition, numerical experiments are carried out to examine features of n-alkane combustion in which the detailed mechanisms can be used to compare processes in all of the n-alkane fuels. The mechanisms for all of these n-alkanes are presented as a single detailed mechanism, which can be edited to produce efficient mechanisms for any of the n-alkanes included, and the entire mechanism, with supporting thermochemical and transport data, together with an explanatory glossary explaining notations and structural details, will be available on our web page when the paper is accepted for publication.

Summary Report on the Workshop on High Temperature Chemical Kinetics, Applications to Combustion Research

Author : National Measurement Laboratory (U.S.)
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Summary Report on the Workshop on High Temperature Chemical Kinetics, Applications to Combustion Research by : National Measurement Laboratory (U.S.)

Download or read book Summary Report on the Workshop on High Temperature Chemical Kinetics, Applications to Combustion Research written by National Measurement Laboratory (U.S.) and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Detailed Chemical Kinetic Reaction Mechanisms for Combustion of Isomers of Heptane

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

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Book Synopsis Detailed Chemical Kinetic Reaction Mechanisms for Combustion of Isomers of Heptane by :

Download or read book Detailed Chemical Kinetic Reaction Mechanisms for Combustion of Isomers of Heptane written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed chemical kinetic reaction mechanisms are developed for all nine chemical isomers of heptane (C--H16), following techniques and models developed previously for other smaller alkane hydrocarbon species. These reaction mechanisms are tested at high temperatures by computing shock tube ignition delay times and at lower temperatures by simulating ignition in a rapid compression machine. Although the corresponding experiments have not been reported in the literature for most of these isomers of heptane, intercomparisons between the computed results for these isomers and comparisons with available experimental results for other alkane fuels are used to validate the reaction mechanisms as much as possible. Differences in the overall reaction rates of these fuels are discussed in terms of differences in their molecular structure and the resulting variations in rates of important elementary reactions. Reaction mechanisms in this study are works in progress and the results reported here are subject to change, based on model improvements and corrections of errors not yet discovered.