IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-10 DOI: 10.1016/j.fuel.2026.138677

Li Zhan , Shihao Lin , Qihao Deng , Wenshang Chen , Yi Yu , Guangfu Li , Ben Chen

{"title":"Performance enhancement in proton exchange membrane water electrolyzers through the metal foam flow fields with orderly arranged pore structure","authors":"Li Zhan , Shihao Lin , Qihao Deng , Wenshang Chen , Yi Yu , Guangfu Li , Ben Chen","doi":"10.1016/j.fuel.2026.138677","DOIUrl":"10.1016/j.fuel.2026.138677","url":null,"abstract":"<div><div>Endowed with merits including fast response speed, high energy conversion efficiency and zero emissions, the proton exchange membrane water electrolyzer (PEMWE) is recognized as a technology with immense potential in the renewable energy domain. It is worth emphasizing that the polarization performance and mass transfer characteristics of PEMWE are crucially affected by the flow field design of its bipolar plates. This study mainly focuses on the improvement of PEMWE performance by metal foam flow field (MFFF). Metal foam structures with three different arrangements were designed and compared with the traditional flow field. The performance and water gas transport characteristics of PEMWE with different pore structure flow fields were analyzed. The results show that both the anode and cathode have a double-layer gradient pore structure, and the MFFF with descending pore size towards the PTL direction has the best performance. At a current density of 3.1A/cm<sup>2</sup>, compared with the parallel flow field, the voltage dropped by 55.6 mV, with a decrease rate of 2.4%. Compared with the serpentine flow field, the voltage dropped by 74.1 mV, with a drop rate of 3.2%. In addition, MFFF with increased pore size in outlet area exhibits superior overall performance, although the performance has not been further improved compared with the former, the pressure drop has been reduced by 50%, demonstrating better gas discharge performance. The results of this study provide valuable theoretical guidance for enhancing the performance of PEMWE.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138677"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ni-Nb-P composite catalyst for efficient Hydrodeoxygenation of lignin derivatives 木质素衍生物高效加氢脱氧的Ni-Nb-P复合催化剂

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-06 DOI: 10.1016/j.fuel.2026.138548

Chunxia Song , Naidong Li , Hanyu Li , Shaoyun Shan , Yunfei Zhi , Xianghong Li , Fashe Li , Juan Xu

{"title":"Ni-Nb-P composite catalyst for efficient Hydrodeoxygenation of lignin derivatives","authors":"Chunxia Song , Naidong Li , Hanyu Li , Shaoyun Shan , Yunfei Zhi , Xianghong Li , Fashe Li , Juan Xu","doi":"10.1016/j.fuel.2026.138548","DOIUrl":"10.1016/j.fuel.2026.138548","url":null,"abstract":"<div><div>Hydrodeoxygenation (HDO) of biomass-derived oxygenates to alkanes as high-quality fuels is an effective way to reduce dependence on fossil energy sources. However, the presence of a large amount of oxygen in biomass derivatives results in water formation during the catalytic conversion process, leading to a loss of catalyst activity. This presents a significant challenge for the development of effective catalysts. In this study, a novel Ni-Nb-P catalyst was prepared using the “one-pot method”, demonstrating the ability to efficiently convert several common lignin-derived oxygen-containing compounds into alkanes under mild conditions. A series of catalysts were prepared by adjusting the pH and molar ratio of Ni/Nb during the preparation. The Ni-Nb-P catalysts prepared at pH = 2–4 and Ni/Nb = 1.5 showed the optimal HDO performance, achieving > 99% conversion of anisole and a cyclohexane selectivity of 93% at 160 °C. Nb is in the form of an amorphous NbOPO<sub>4</sub> species, and Ni is mainly in the Ni<sub>3</sub>P or metallic Ni form. The catalysts feature homogeneous lamellar nanostructures with well-dispersed metal particles. The catalysts are predominantly dominated by moderately strong and strongly acidic centers and the acid center mainly consists of Lewis acid. The HDO of anisole followed the hydrogenation (HYD) pathway, while the HDO of benzaldehyde followed a hydrogenation-hydrogenolysis pathway, with the transfer of a methyl group (TMA) occurring via this pathway. The HDO of phenol occurred exclusively via the hydrogenation pathway. The catalyst exhibits excellent stability and regeneration capabilities, as shown in a 6-run recycling test. This work provides a novel route for the conversion of lignin-derived phenolic compounds to alkane fuels.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138548"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative evaluation of microscale frictional stability in modified asphalts: Insights from chaos dynamics and time-series analysis 改性沥青微尺度摩擦稳定性的定量评价：来自混沌动力学和时间序列分析的见解

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-06 DOI: 10.1016/j.fuel.2026.138664

Xianwen Li , Yizhou Liu , Boyuan Yin , Chongzheng Zhu , Dongzhao Jin , Fu Xu

{"title":"Quantitative evaluation of microscale frictional stability in modified asphalts: Insights from chaos dynamics and time-series analysis","authors":"Xianwen Li , Yizhou Liu , Boyuan Yin , Chongzheng Zhu , Dongzhao Jin , Fu Xu","doi":"10.1016/j.fuel.2026.138664","DOIUrl":"10.1016/j.fuel.2026.138664","url":null,"abstract":"<div><div>While asphalt friction critically impacts road safety, existing studies predominantly focus on macroscale properties, leaving microscale dynamic stability mechanisms underexplored. A novel chaos dynamics-based framework integrating AFM friction tests, time-series analysis, and the maximum Lyapunov exponents (MLE) were developed to quantify the stability of modified asphalts in the current work. Four types of asphalt: base asphalt, SBS-modified asphalt (SBS-MA), organic montmorillonite-modified asphalt (OMMT-MA), and titanium dioxide-modified asphalt (TiO<sub>2</sub>-MA), were prepared and subjected to rolling thin film oven (RTFO) aging. The experimental results revealed that microscale surface morphology, stick–slip behavior, and dynamic friction stability are significantly influenced by the type and dispersion of modifiers. TiO<sub>2</sub>-MA exhibited the smallest friction force fluctuation, lowest pile-up volume, and lowest MLE, indicating the highest dynamic stability. In contrast, OMMT-MA showed weak shear resistance and chaotic frictional behavior due to uneven modifier dispersion. The proposed framework offers a new quantitative approach to characterize and differentiate the frictional performance of modified asphalts, providing mechanistic insights for optimizing asphalt design under dynamic loading conditions.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138664"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A specific strategy for accelerating strength-development rate of self-generated proppants: the gel effect related autoacceleration 加速自生成支撑剂强度发展速率的特定策略：与自加速相关的凝胶效应

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-05 DOI: 10.1016/j.fuel.2026.138620

Xianyan Ren , Zhenyong Li , Yating Chen , Xiaoji Fu , Yirui Zhang , Dan Fang , Xirui Chen , Cheng Bian

{"title":"A specific strategy for accelerating strength-development rate of self-generated proppants: the gel effect related autoacceleration","authors":"Xianyan Ren , Zhenyong Li , Yating Chen , Xiaoji Fu , Yirui Zhang , Dan Fang , Xirui Chen , Cheng Bian","doi":"10.1016/j.fuel.2026.138620","DOIUrl":"10.1016/j.fuel.2026.138620","url":null,"abstract":"<div><div>The self-generated proppants begin to grow in strength immediately after the liquid–solid phase transition reaction. The growth rate is crucial for their timely development of sufficient compressive strength in fractures to prevent the closure of fractures. The paper proposes a specific strategy, based on the gel effect’s auto-acceleration phenomenon, for accelerating the growth process of self-generated proppants. Based on the DSC curve and viscosity changes during heating, the use of trimethylolpropane triacrylate (TMPTA) as the monomer and divinylbenzene (DVB) as the crosslinking agent to form a phase-changeable liquid (PCL) resulted in significantly increased temperature peaks, heat release, and a sharp rise in viscosity. It is the gel effect that leads to the interaction between the hindered diffusion of reaction heat and the viscosity increase of the reaction system. This interaction results in the auto-acceleration of the polymerization of the PCL, <em>i.e.</em>, the acceleration of the growth rate of the self-generated proppant. Remarkably, the self-generated proppant achieves its peak pressure (47.7 N) in just 8 min, and its growth process is unaffected by salinity. The final product demonstrated outstanding performance: near 90% pellet formation yield, excellent resistance to acid (0.2% mass loss), alkali (1.5% mass loss), and salinity (0.2% mass loss), and high compressive strength (3% crushing rate at 69 MPa).</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138620"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical study on the dynamic characteristics of high-pressure hydrogen-oxygen premixed flame in combustion light gas gun 燃烧轻气枪中高压氢氧预混火焰动态特性的数值研究

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-05 DOI: 10.1016/j.fuel.2026.138657

Junjie Lu, Qiuyang Zhao, Keyu Zhao, Tengyu Li, Yechun Wang, Hui Jin, Liejin Guo

{"title":"Numerical study on the dynamic characteristics of high-pressure hydrogen-oxygen premixed flame in combustion light gas gun","authors":"Junjie Lu, Qiuyang Zhao, Keyu Zhao, Tengyu Li, Yechun Wang, Hui Jin, Liejin Guo","doi":"10.1016/j.fuel.2026.138657","DOIUrl":"10.1016/j.fuel.2026.138657","url":null,"abstract":"<div><div>The premixed hydrogen–oxygen combustion process in the interior ballistic process of combustion light gas gun (CLGG) exhibits deflagration-detonation transition (DDT) phenomenon, which has a significant impact on the stable combustion. Therefore, studying the dynamic characteristics of high-pressure premixed flames in CLGG is of great significance for understanding the DDT process. In this research, a numerical model was developed to investigate the high-pressure hydrogen–oxygen premixed combustion. The dynamic characteristics of the premixed flame under different working conditions were studied. The results show that the characteristics of flame area changes under different working conditions are obvious. Under the working condition with a single ignition, the flame area increases rapidly at first and then slows down. The increase of ignitions will affect the inflation rate of the flame area. Under the working condition with a single ignition, the inflation rate initially grows slowly and then it decreases. With an increased number of ignitions, the inflation rate increases slowly at first and then it increases rapidly. In addition, the change in inflation rate precedes the change in flame area. The pressure change during the entire combustion process can be divided into two stages, namely a stable stage and an oscillation stage. During the stable stage, the pressure fluctuation amplitude is relatively low, while during the oscillation stage, the pressure oscillation phenomenon is intense and the fluctuation amplitude is large. Under the high-pressure conditions, the hydrogen–oxygen premixed flame cannot maintain stable combustion in the early stage of combustion. Meanwhile, the flame is instable under the influence of Richtmyer-Meshkov instability.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138657"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent research progress on Ruthenium-based catalysts for electrocatalytic water splitting 钌基电催化水裂解催化剂的研究进展

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-09 DOI: 10.1016/j.fuel.2026.138679

Xi-Zheng Fan , Qing-Qing Pang

{"title":"Recent research progress on Ruthenium-based catalysts for electrocatalytic water splitting","authors":"Xi-Zheng Fan , Qing-Qing Pang","doi":"10.1016/j.fuel.2026.138679","DOIUrl":"10.1016/j.fuel.2026.138679","url":null,"abstract":"<div><div>Ruthenium (Ru), leveraging their unique electronic structures, have shown tremendous potential in balancing catalytic activity and cost, emerging as a hotspot for electrocatalytic water splitting. In this review, we systematically analyzes the mechanism, advantages, and latest research breakthroughs of Ru-based catalysts. The high intrinsic activity originates from the moderate of hydrogen adsorption and excellent oxygen evolution activity endowed by the variable valence states. To fully unlock Ru potential, research strategies have shifted from macroscale synthesis to atomic-level precise regulation, such as structure modulation, element doping, single-atomization, and composite materials have been developed to significantly enhance its catalytic activity and structural stability. Particularly, based on Ru’s bifunctional properties, the efficient overall water splitting catalysts such as phosphides, sulfides, and various composite materials have been successfully developed. Despite significant achievements, Ru-based catalysts still face challenges in stability, activity enhancement, and large-scale synthesis. Future research will focus on deepening mechanism elucidation, designing new materials with ultra-high performance, and advancing the development toward scalable electrodes. Ru-based catalysts are expected to become one of the key materials driving the realization of hydrogen economy.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138679"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urea decomposition, oxidation, and SNCR: The effect of CO 尿素分解、氧化和SNCR: CO的影响

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-07 DOI: 10.1016/j.fuel.2026.138537

Claudia Pastor-Morell , Hamid Hashemi , Hao Wu , Peter Glarborg , Alberto Cuoci

{"title":"Urea decomposition, oxidation, and SNCR: The effect of CO","authors":"Claudia Pastor-Morell , Hamid Hashemi , Hao Wu , Peter Glarborg , Alberto Cuoci","doi":"10.1016/j.fuel.2026.138537","DOIUrl":"10.1016/j.fuel.2026.138537","url":null,"abstract":"<div><div>Urea decomposition and oxidation at high temperatures, along with its interaction with NO in the SNCR process, have been investigated through a combination of flow reactor experiments and detailed chemical kinetic modeling. The experiments were performed at atmospheric pressure using CO(NH<sub>2</sub>)<sub>2</sub>/H<sub>2</sub>O mixtures, investigating the effect of adding O<sub>2</sub>, NO, and/or CO. The experiments were highly diluted in N<sub>2</sub> and the temperature was varied from 973 to 1473 K. The reaction mechanism was based on the nitrogen chemistry review by Glarborg et al. (2018), with updates to the amine, HNCO, and N<sub>2</sub>O subsets based on more recent studies. Thermal urea decomposition and oxidation experiments were consistent with the theoretical rate constant for gas-phase urea dissociation proposed by Honorien et al. (2021), which deviates significantly from previously used values in SNCR modeling with urea. Adding CO has a similar effect on both urea oxidation and SNCR, shifting the chemistry towards lower temperatures. In the SNCR process, the temperature for maximum NO removal shifted by up to 200 K without compromising the overall reduction efficiency. A breakdown of the plug-flow approximation was observed at elevated temperatures and high CO concentrations, attributed to reactions occurring in the preheating zone, where strong radial temperature gradients are present. Under these conditions, cylindrical shear flow reactor models and full two-dimensional simulations provided more accurate predictions. Overall, the modeling predictions were in good agreement with both the experimental data from this study and literature data.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138537"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized global reaction mechanisms for hydrogen-enriched alkanes and alcohols up to 600 K and 5 atm 优化了富氢烷烃和醇在600 K和5 atm下的全局反应机制

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-09 DOI: 10.1016/j.fuel.2026.138699

Dong Seok Jeon , Hui Man Yang , Nam Il Kim

{"title":"Optimized global reaction mechanisms for hydrogen-enriched alkanes and alcohols up to 600 K and 5 atm","authors":"Dong Seok Jeon , Hui Man Yang , Nam Il Kim","doi":"10.1016/j.fuel.2026.138699","DOIUrl":"10.1016/j.fuel.2026.138699","url":null,"abstract":"<div><div>Global reaction mechanisms (GRMs) have been widely used in engineering combustion simulations due to their high efficiency. However, they have not been sufficiently improved for conventional fuels and their hydrogen blends, which have recently gained interest. This study proposed GRMs for alkanes (C<sub>2</sub>H<sub>6</sub>, C<sub>3</sub>H<sub>8</sub>, and C<sub>4</sub>H<sub>10</sub>), alcohols (CH<sub>3</sub>OH and C<sub>2</sub>H<sub>5</sub>OH), and their hydrogen blends. For each fuel, optimized single-step GRMs were derived from laminar burning velocities (LBVs) estimated from detailed reaction mechanisms (DRMs) and experimental results. The single-step GRMs accurately reflected LBVs in fuel-lean conditions but over-predicted them in fuel-rich conditions. To address this issue, optimized 5-step GRMs were recommended for each fuel over a broad range of equivalence ratios (<span><math><mrow><mn>0.5</mn><mo>⩽</mo><mi>ϕ</mi><mo>⩽</mo><mn>1.5</mn></mrow></math></span>), pressures (1–5 atm), and temperatures (300–600 K). These GRMs included a hydrogen single-step (HS) reaction, a water–gas shift (WGS) reaction, a CH<sub>2</sub> reaction, and two additional reactions. The GRMs derived in this study could significantly reduce computational costs while maintaining suitable reliability. This study provides an efficient means to conduct practical combustion simulations.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138699"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of highly efficient Cu catalysts supported on dealuminated Y zeolite for the methanol dehydrogenation reaction 脱铝Y沸石负载高效Cu催化剂的制备

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-10 DOI: 10.1016/j.fuel.2026.138649

Aolue Yan , Yanhong Quan , Yan Li , Jun Ren

{"title":"Fabrication of highly efficient Cu catalysts supported on dealuminated Y zeolite for the methanol dehydrogenation reaction","authors":"Aolue Yan , Yanhong Quan , Yan Li , Jun Ren","doi":"10.1016/j.fuel.2026.138649","DOIUrl":"10.1016/j.fuel.2026.138649","url":null,"abstract":"<div><div>Cu aggregation has been a significant obstacle to promoting the catalytic performance of methanol dehydrogenation for the production of high hydrogen storage chemical methyl formate (MF). Catalysts composed of Cu with different loading (<em>x</em> = 5, 10, 15, 20 wt%) supported on dealuminated mesoporous Y zeolite (mY-deAl) had been prepared by mechanical grinding method and used in methanol dehydrogenation for MF. 10Cu/mY-deAl with appropriate Cu loading exhibited the largest MF yield of 31.9%, which was approximately 30 times higher than that of Cu/mY of 1.0% under 280 °C and 0.2 MPa. The excellent behavior was proved to be attributed to the development of amounts of mesoporous allowing the Cu particle enter into as well as the formation of Al vacancies anchoring optimal amount of Cu, induced by the dealumination of Y. Furthermore, the closely linear relationships between Cu dispersion and TOF<sub>Cu</sub>, along with that between active Cu<sup>0</sup> concentration and MF selectivity were revealed. The less Cu loading could not provide enough active sites for the conversion of methanol (22.0%) even though having the best dispersion, while the excessive Cu loading would result in Cu aggregation in the mesopores deriving from the limit of Al vacancies. This contribution innovatively provided a kind of Cu supported Y catalyst and clearly elucidated the promotion mechanism of catalytic performance driven by the synergy of Al vacancies and mesopores in methanol dehydrogenation to MF.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138649"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Downstream temperature rise and radiation properties from large-scale aviation kerosene pool fires under forced airflow 大型航空煤油池火灾在强制气流作用下的下游温升及辐射特性

IF 7.5 1区工程技术

Fuel Pub Date : 2026-08-01 Epub Date: 2026-02-10 DOI: 10.1016/j.fuel.2026.138672

Zhen Mao, Bo Li, Yulun Zhang, Shaohua Mao, Nan Chen, Shishan Liu, Dayu Zhang

{"title":"Downstream temperature rise and radiation properties from large-scale aviation kerosene pool fires under forced airflow","authors":"Zhen Mao, Bo Li, Yulun Zhang, Shaohua Mao, Nan Chen, Shishan Liu, Dayu Zhang","doi":"10.1016/j.fuel.2026.138672","DOIUrl":"10.1016/j.fuel.2026.138672","url":null,"abstract":"<div><div>This paper presents an experimental study on the downstream temperature rise and radiative properties of large-scale pool fires (with square pool side lengths of <em>D</em> = 2 m and <em>D</em> = 3 m) under forced airflow. The experiments used RP-5 aviation kerosene, which produces a high-soot flame. A steady airflow of 0–9 m/s was generated using a large outdoor wind tunnel. The results revealed that the flame significantly tilted, with its trailing edge accompanied by substantial soot. Under windless conditions, the temperature rise decays with distance from the pool center, whereas under forced airflow, it exhibits a non-monotonic trend, peaking before it attenuates. Building on the linear relationship between the dimensionless flame-drag length and the dimensionless position of the peak temperature rise, a modified nondimensional parameter was introduced to characterize the attenuation in large-scale pool fires. Radiant heat flux meters were used to measure the radiative heat flux in four directions (downstream, upstream, and 45° & 90° on the side). The radiative heat flux on the side and upstream exhibited a negative correlation with airflow velocity. However, the downstream radiative heat flux increased with airflow velocity, showing a declining trend with the horizontal distance from the pool center. The far-field radiative fraction was identified to correlate positively with airflow velocity. Moreover, a predictive model for the radiative fraction of large-scale aviation kerosene pool fires related to relatively strong airflow (<em>Fr</em> > 1) was developed, combined with an assumed triangular geometric approximation of flame shape.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"417 ","pages":"Article 138672"},"PeriodicalIF":7.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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