Journal of Combustion最新文献_第7页

A Study of the Flow Field Surrounding Interacting Line Fires 相互作用线火的流场研究

IF 0.7

Journal of Combustion Pub Date : 2016-12-26 DOI: 10.1155/2016/6927482

Trevor B. Maynard, M. Princevac, D. Weise

引用次数: 26

Experimental Study on the Influence of DPF Micropore Structure and Particle Property on Its Filtration Process DPF微孔结构及颗粒性质对其过滤过程影响的实验研究

IF 0.7

Journal of Combustion Pub Date : 2016-12-22 DOI: 10.1155/2016/9612856

Zhongwei Meng, Jia Fang, Yunfei Pu, Yan Yan, Yi Wu, Yong Wang, Q. Song

{"title":"Experimental Study on the Influence of DPF Micropore Structure and Particle Property on Its Filtration Process","authors":"Zhongwei Meng, Jia Fang, Yunfei Pu, Yan Yan, Yi Wu, Yong Wang, Q. Song","doi":"10.1155/2016/9612856","DOIUrl":"https://doi.org/10.1155/2016/9612856","url":null,"abstract":"A single layer filtration system was developed to investigate the filtration and regeneration performance of diesel particle filter (DPF). The particle layer thickness was directly measured online to analyze the different filtration stages. The influence of particle property on particle layer stage performance was also investigated. The results indicate that the filtration velocity can greatly affect the deep bed filtration stage, and the deposited particle layer can be compressed even in very low filtration velocity and higher filtration velocity trends to form denser particle layer. Optimizing the pore structure can effectively shorten the deep bed filtration stage and reduce the pressure drop eventually. An empirical function was proposed to relate the pore structure and the initial increment rate of pressure drop, which presented that reducing the pore size distribution range ( ) can result in low DPF filtration pressure drop. The filtration stage could be further divided into four stages, and the value of particle layer thickness ranging within 15~20 μm has been found to be critical number for the shift from the transient stage to the cake filtration stage. Particle with large primary diameter and BET surface was beneficial to form loose particle layer.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74547287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

The Role of Hydrogen Bonding on Laminar Burning Velocity of Hydrous and Anhydrous Ethanol Fuel with Small Addition of n-Heptane 氢键对少量加入正庚烷的有水和无水乙醇燃料层流燃烧速度的影响

IF 0.7

Journal of Combustion Pub Date : 2016-11-01 DOI: 10.1155/2016/9093428

I Made Suarta, I. Wardana, N. Hamidi, W. Wijayanti

{"title":"The Role of Hydrogen Bonding on Laminar Burning Velocity of Hydrous and Anhydrous Ethanol Fuel with Small Addition of n-Heptane","authors":"I Made Suarta, I. Wardana, N. Hamidi, W. Wijayanti","doi":"10.1155/2016/9093428","DOIUrl":"https://doi.org/10.1155/2016/9093428","url":null,"abstract":"The molecular structure of mixed hydrous and anhydrous ethanol with up to 10% v n-heptane had been studied. The burning velocity was examined in a cylindrical explosion combustion chamber. The result showed that the burning velocity of hydrous ethanol is higher than anhydrous ethanol and n-heptane at stoichiometric, rich, and very rich mixtures. The burning velocity of hydrous ethanol with n-heptane drops drastically compared to the burning velocity of anhydrous ethanol with n-heptane. It is caused by two reasons. Firstly, there was a composition change of azeotropic hydrous ethanol molecules within the mixture of fuel. Secondly, at the same volume the number of ethanol molecules in hydrous ethanol was less than in anhydrous ethanol at the same composition of the n-heptane in the mixture. At the mixture of anhydrous ethanol with n-heptane, the burning velocity decreases proportionally to the addition of the n-heptane composition. The burning velocity is between the velocities of anhydrous ethanol and n-heptane. It shows that the burning velocity of anhydrous ethanol mixed with n-heptane is only influenced by the mixture composition.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87299282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Numerical Simulation of the Heat Transfer Behavior of a Zigzag Plate Containing a Phase Change Material for Combustion Heat Recovery and Power Generation 燃烧热回收与发电用相变材料之字形板传热行为的数值模拟

IF 0.7

Journal of Combustion Pub Date : 2016-09-25 DOI: 10.1155/2016/3092508

Peilun Wang, P. Song, Yun Huang, Zhijian Peng, Yulong Ding

{"title":"Numerical Simulation of the Heat Transfer Behavior of a Zigzag Plate Containing a Phase Change Material for Combustion Heat Recovery and Power Generation","authors":"Peilun Wang, P. Song, Yun Huang, Zhijian Peng, Yulong Ding","doi":"10.1155/2016/3092508","DOIUrl":"https://doi.org/10.1155/2016/3092508","url":null,"abstract":"This study presents a numerical analysis of the melting process of phase change materials (PCMs) within a latent heat thermal energy storage (LHTES) system employing zigzag plate. The numerical model used NaCl-MgCl2 mixture as PCMs and hot air as heat transfer fluid (HTF). An experimental system was built to validate the model, and the experimental data agrees reasonably well with the simulation results. The simulation results revealed the effects of the Reynolds and Stefan numbers and the surface topography of the zigzag plate on the charging process. Besides, the effect of the relationship between Reynolds and Stefan numbers on the charging process under a new boundary condition employing a fixed input power was studied. It is found that by modifying the shape of the zigzag plate surface it is feasible to enhance the heat transfer of the LHTES unit remarkably. The melting rate of PCMs increases with the value of Ste or Re numbers with only one of them changing; however, the melting rate of PCMs decreases with the increasing Ste (or decreasing Re) in a fixed input power condition.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80771706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Numerical Analysis of Turbulent Combustion in a Model Swirl Gas Turbine Combustor 模型旋流燃气轮机燃烧室湍流燃烧的数值分析

IF 0.7

Journal of Combustion Pub Date : 2016-09-15 DOI: 10.1155/2016/2572035

A. Benim, S. Iqbal, F. Joos, A. Wiedermann

{"title":"Numerical Analysis of Turbulent Combustion in a Model Swirl Gas Turbine Combustor","authors":"A. Benim, S. Iqbal, F. Joos, A. Wiedermann","doi":"10.1155/2016/2572035","DOIUrl":"https://doi.org/10.1155/2016/2572035","url":null,"abstract":"Turbulent reacting flows in a generic swirl gas turbine combustor are investigated numerically. Turbulence is modelled by a URANS formulation in combination with the SST turbulence model, as the basic modelling approach. For comparison, URANS is applied also in combination with the RSM turbulence model to one of the investigated cases. For this case, LES is also used for turbulence modelling. For modelling turbulence-chemistry interaction, a laminar flamelet model is used, which is based on the mixture fraction and the reaction progress variable. This model is implemented in the open source CFD code OpenFOAM, which has been used as the basis for the present investigation. For validation purposes, predictions are compared with the measurements for a natural gas flame with external flue gas recirculation. A good agreement with the experimental data is observed. Subsequently, the numerical study is extended to syngas, for comparing its combustion behavior with that of natural gas. Here, the analysis is carried out for cases without external flue gas recirculation. The computational model is observed to provide a fair prediction of the experimental data and predict the increased flashback propensity of syngas.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84855246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

A Numerical Study on the Oscillating Flow Induced by an Acoustic Field around Coal Particles 煤颗粒周围声场诱导振荡流动的数值研究

IF 0.7

Journal of Combustion Pub Date : 2016-09-05 DOI: 10.1155/2016/8306839

G. Jiang, Weilong Xu, Yuechao Liu, Yapan Wu, Q. Kong

引用次数: 2

The Role of Molecule Clustering by Hydrogen Bond in Hydrous Ethanol on Laminar Burning Velocity 含水乙醇中氢键分子聚类对层流燃烧速度的影响

IF 0.7

Journal of Combustion Pub Date : 2016-06-08 DOI: 10.1155/2016/5127682

I Made Suarta, I. Wardana, N. Hamidi, W. Wijayanti

{"title":"The Role of Molecule Clustering by Hydrogen Bond in Hydrous Ethanol on Laminar Burning Velocity","authors":"I Made Suarta, I. Wardana, N. Hamidi, W. Wijayanti","doi":"10.1155/2016/5127682","DOIUrl":"https://doi.org/10.1155/2016/5127682","url":null,"abstract":"The role of hydrogen bond molecule clustering in laminar burning velocities was observed. The water in hydrous ethanol can change the interaction between water-ethanol molecules. A certain amount of water can become oxygenated which increases the burning velocity. The hydrogen bond interaction pattern of ethanol and water molecules was modeled. Based on the molecular model, azeotropic behavior emerges from ethanol-water hydrogen bond, which is at a 95.1%v composition. The interaction with water molecule causes the ethanol molecule to be clustered with centered oxygenated compound. So, it supplies extra oxygen and provides intermolecular empty spaces that are easily infiltrated by the air. In the azeotropic composition, the molecular bond chain is the shortest, so hypothetically the burning velocity is anticipated to increase. The laminar burning velocity of ethanol fuel was tested in a cylindrical explosion bomb in lean, stoichiometric, and rich mixtures. The experimental result showed that the maximum burning velocity occurred at hydrous ethanol of 95.5%v composition. This discrepancy is the result of the addition of energy from 7.7% free ethanol molecules that are not clustered. At the rich mixture, the burning velocity of this composition is higher than that of anhydrous ethanol.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77297412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Large Eddy Simulation of a Swirl-Stabilized Pilot Combustor from Conventional to Flameless Mode 旋涡稳定先导燃烧室从常规模式到无焰模式的大涡模拟

IF 0.7

Journal of Combustion Pub Date : 2016-05-31 DOI: 10.1155/2016/8261560

E. Fooladgar, Ck Chan

引用次数: 3

Characterization of Some Nigerian Coals for Power Generation 尼日利亚一些发电用煤的特性研究

IF 0.7

Journal of Combustion Pub Date : 2016-05-12 DOI: 10.1155/2016/9728278

M. Chukwu, C. O. Folayan, G. Pam, D. Obada

{"title":"Characterization of Some Nigerian Coals for Power Generation","authors":"M. Chukwu, C. O. Folayan, G. Pam, D. Obada","doi":"10.1155/2016/9728278","DOIUrl":"https://doi.org/10.1155/2016/9728278","url":null,"abstract":"Five coal samples from Odagbo (Kogi State), Owukpa (Benue State), Ezimo (Enugu State), Amansiodo (Enugu State), and Inyi (Enugu State) of Nigerian coal deposits were subjected to proximate analysis, ultimate analysis, calorific value determination, and petrographic and thermogravimetric analysis to determine their suitability for power generation. Based on results of tests carried out, Amansiodo coal is a bituminous, low sulphur, and medium ash coal, while Owukpa coal is a subbituminous A, low sulphur, low ash coal rich in huminites, Odagbo coal is a subbituminous B, medium sulphur, low ash coal rich in huminites, Ezimo coal is a subbituminous C, low sulphur, high ash coal, and Inyi coal is a subbituminous C, low sulphur, high ash coal. Between Odagbo and Owukpa subbituminous coals, Owukpa has a lower ignition temperature (283.63°C) due to its higher volatile matter content (39.1%). However, Ezimo subbituminous coal, which has a lower volatile matter (31.1%), unexpectedly has the same ignition temperature as Owukpa (283.63°C) due to its higher liptinite content (7.2%) when compared with that of Owukpa (2.9%). The ease of combustion of the coal samples in decreasing order is Odagbo < Owukpa < Inyi < Ezimo < Amansiodo.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2016-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91123100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 48

Influence of Environmentally Friendly and High-Efficiency Composite Additives on Pulverized Coal Combustion in Cement Industry 环保高效复合助剂对水泥工业煤粉燃烧的影响

IF 0.7

Journal of Combustion Pub Date : 2016-04-04 DOI: 10.1155/2016/8205945

W. Zhiyong, Shijie Wang, Q. Zhang, Fang Qingyan, W. Chen

引用次数: 2