Article
Engineering, Marine
Xiuxiu Sun, Mengmeng Wang, Incecik Atilla, Shizhe Feng, Zhixiong Li
Summary: A combustion mechanism based on a multi-component surrogate fuel was developed and validated for simulating diesel combustion process with high accuracy. The study indicates that the ratios of surrogate fuel components have a significant impact on the formation of NOx emissions.
Article
Engineering, Mechanical
Jin Yu, Fanjun Guo, Tao Deng, Ping Liu, Jia-Jia Yu
Summary: This study developed physical-chemical surrogate models for S-8, Jet-A, and RP-3 fuels and verified their accuracy in capturing physical properties and spray characteristics. A high-precision surrogate skeletal mechanism suitable for CFD simulations was also developed and validated. The surrogate models were further used in combustion CFD simulations, showing good agreement with experimental data in fundamental and spray combustion characteristics.
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2023)
Article
Thermodynamics
Seyed Mohammad Safieddin Ardebili, Mustafa Babagiray, Emre Aytav, Ozer Can, Andrei-Alexandru Boroiu
Summary: This study investigates the effects of adding Jet-A1 aviation fuel to diesel fuel in a direct injection diesel engine. The response surface method is used to analyze combustion, performance, and emissions under different engine conditions. The study determines the optimal operating range and response parameters for the diesel engine.
Article
Chemistry, Multidisciplinary
Dianne Jeanne Luning Prak, Gretchen R. Simms, Terrence Dickerson, Andy McDaniel, Jim S. Cowart
Summary: In this study, surrogates of military jet fuel JP-5 were formulated and tested in comparison to a standard JP-5 fuel. The surrogates were developed based on the chemical composition of real JP-5 fuels, and their physical and chemical properties were optimized. Five surrogates performed similarly to the baseline JP-5 in terms of combustion behavior in a diesel engine. The best surrogate was identified based on its physical properties, chemical properties, and combustion behavior.
Article
Thermodynamics
Song Zhou, Weijian Zhou, Hongyuan Xi, Majed Shreka, Zhao Zhang
Summary: A simplified mechanism for a dual fuel engine using diesel/natural gas blend was developed based on a previous detailed mechanism of n-dodecane and natural gas. The simplified mechanism was obtained by applying direct relation graph, directed relation graph with error propagation, and sensitivity analysis simplification method. The mechanism was validated through comparison with experimental data and detailed mechanism, and was coupled with CFD software for simulating engine spray combustion.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Energy & Fuels
Ming Yang, Shengqiang Lin, Handong Liao, Shiqing Kang, Bin Yang
Summary: A new jet fuel surrogate has been developed through simulation and comparison with experimental data, showing reasonable predictions on major combustion behaviors of Jet A. The chemical properties matching and quantitative analysis are key steps in the formulation process.
Review
Green & Sustainable Science & Technology
Djati Wibowo Djamari, Muhammad Idris, Permana Andi Paristiawan, Muhammad Mujtaba Abbas, Olusegun David Samuel, Manzoore Elahi M. Soudagar, Safarudin Gazali Herawan, Davannendran Chandran, Abdulfatah Abdu Yusuf, Hitesh Panchal, Ibham Veza
Summary: Research and development in the internal combustion engine have been growing, and diesel engines have advantages in efficiency, power output, and reliability. Although observing diesel spray is complex due to its high-speed, high-pressure, and high-temperature conditions, some mechanisms have been explained and suggestions have been made. This paper comprehensively reviews the current status of theoretical diesel spray and modeling.
Article
Energy & Fuels
Jizhen Zhu, Dezhi Zhou, Liang Yu, Yong Qian, Xingcai Lu
Summary: This study aims to construct a high-fidelity simplified multi-component kinetic model for simulating the autoignition and oxidation processes of real diesel fuel. By using chemical lumping, skeletal reduction methods, and genetic algorithm optimization, a model that is in good agreement with experimental results can be obtained.
Article
Energy & Fuels
Zhijie Zhu, Xingyu Liang, Lei Cui, Kun Wang, Xiaohui Wang, Shihao Zhu
Summary: Currently, most ships still rely on fossil fuels as the main source for marine engines. However, diesel as a fuel for marine engines is no longer sufficient to meet the economic requirements of shipping and emission restrictions imposed by regulations. This research examined the viability of employing hydrogen-carrying fuel ammonia (NH3) in marine engines to develop a low-carbon combustion technology, to address the carbon emission problem of marine diesel engines.
Article
Energy & Fuels
Xing Liu, Ying Wang, Yuanqi Bai, Qiongyang Zhou, Wenxu Yang
Summary: A three-component surrogate model was developed to emulate the physical and chemical characteristics of RP-3 kerosene, and a skeletal mechanism of RP-3 was developed based on this surrogate model. The surrogate model and skeletal mechanism proved to be reliable in various conditions.
Article
Thermodynamics
Elsayed Abdelhameed, Hiroshi Tashima
Summary: This study investigated the direct injection of methane-hydrogen as a diffusive combustion and analyzed the effect of different injection pressures on the characteristics of the methane-hydrogen jet. The combustion of the methane-hydrogen blend was observed using high-speed cameras and the results showed that hydrogen usage increased in-cylinder pressure and decreased CO2 and hydrocarbon emissions. However, a fuel blend containing 50% hydrogen increased nitrogen dioxide emissions.
Article
Energy & Fuels
Huaiyin Wang, Tianyou Wang, Yizhuo Feng, Zhen Lu, Kai Sun
Summary: This study numerically investigated the combustion process of a natural gas-diesel dual-fuel marine engine. The results showed that the scavenging port angle controlled the fuel stratification in the cylinder, and the prechamber layout significantly affected the swirl motion and flame propagation. Optimizing the scavenging swirl and prechamber ignition jet can improve combustion efficiency and meet emission requirements.
Article
Energy & Fuels
Yuqiang Li, Junhong Zhao, Tcheteu Djike Calvin Laurent, Gang Wu
Summary: Experimental results demonstrate that n-butanol-diesel blend as a pilot fuel can improve the performance and emissions of natural gas (NG) dual-fuel engine. A simplified HTBMEP mechanism was constructed with 513 reactions and 117 species for numerical simulation of n-butanol-diesel-NG combustion in engine, showing reliability through extensive validation. Further numerical study indicates that increasing NG substitution rate and n-butanol blend ratio affect combustion processes and emissions.
Article
Energy & Fuels
Peixin Zhao, Xiuxiu Sun, Xingyu Liang, Guoxi Jing, Teng Ma
Summary: A multi-component surrogate fuel was developed as an alternative to heavy fuel oil, with proportions determined based on the chemical and physical characteristics. The surrogate fuel was extensively validated and found to exhibit reliable overall performance for combustion behavior.
Article
Energy & Fuels
B. Karpanai Selvan, Soni Das, M. Chandrasekar, R. Girija, S. John Vennison, N. Jaya, P. Saravanan, M. Rajasimman, Yasser Vasseghian, N. Rajamohan
Summary: The study investigates the performance and emission characteristics of various biomass blends in a diesel engine. The results show that the AO10D blend performs well with higher thermal efficiency and lower emissions at 50% load.
Article
Thermodynamics
Zhiqiang Han, Mingyan Hu, Jiahui Zhao, Wenbin Yu
Summary: This study investigated the influence of hydraulic oil supply pressure and maximum opening on the upstream instantaneous pressure variation of the hydraulic circuit of the electromagnetic valve. Results showed that characteristic parameter values change with increasing oil supply pressure and maximum opening. The difference in the characteristic parameter P-e value at different maximum openings is minimal, almost unaffected by the maximum opening.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2021)
Article
Energy & Fuels
Xueshun Wu, Peng Wang, Zhennan Zhu, Yunshou Qian, Wenbin Yu, Zhiqiang Han
Summary: Initial temperature promotes laminar burning velocity, while initial pressure and dilution rate inhibit it. Equal laminar burning velocities can be achieved through coupling different initial conditions. The rate of change in laminar burning velocity increases as initial temperature increases, initial pressure decreases, and dilution rate decreases.
Article
Green & Sustainable Science & Technology
Qinjie Lin, Kun Lin Tay, Wenbin Yu, Yichen Zong, Wenming Yang, Laura-Helena Rivellini, Mutian Ma, Alex King Yin Lee
Summary: Polyoxymethylene dimethyl ether 3 (PODE3) is a highly promising renewable fuel that shows potential for reducing soot pollution in diesel engines. Adding 20% PODE3 to diesel can reduce particulate matter at all engine loads, but may lead to an increase in particle number concentration.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Wenbin Yu, Feiyang Zhao, Wenming Yang, Qiren Zhu
Summary: This study focuses on parameter uncertainties in engineering analysis, particularly in interpreting model predictions using LII diagnosis and DMS500 measurements for f(v) calibration. Various methodologies such as Bayesian regression and principal component analysis are utilized to infer uncertainties associated with calibration parameters and provide better guidance for LII diagnosis on soot characteristics.
Article
Mechanics
Su Tian, Wenbin Yu
Summary: In this work, the Gaussian process is proposed to approximate the overall shape of the initial failure envelope in the space of sectional forces and moments of composite beam cross-sections, using Tsai-Wu failure criterion for strength analysis at the material level. The adaptive sampling technique is used to select training data and the predicted variance scaled by predicted mean is used as a measure of the score to select the most promising point as the new sample for the next training iteration.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Fei Tao, Xin Liu, Haodong Du, Wenbin Yu
Summary: The Abaqus-DNN mechanics system combines the commercial FE code Abaqus with the DNN model to learn the constitutive law of fiber-reinforced composite materials, providing a generalized approach for learning unknown physics inside a mechanics system. This system accurately learns constitutive laws based on structural level data and has broad application prospects.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Yufei Long, Orzuri Rique, Juan M. Fernandez, Andrew C. Bergan, Joshua E. Salazar, Wenbin Yu
Summary: In this study, finite element simulation of the column bending test (CBT) was conducted using shell elements with anisotropic viscoelastic section properties. The results showed that the model was capable of predicting most of the measured trends, but viscoplasticity should also be considered.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Manufacturing
Yufei Long, Wenbin Yu, R. Byron Pipes, Alireza Forghani, Anoush Poursartip, Kamyar Gordnian
Summary: An efficient shell model based on mechanics of structure genome (MSG) is introduced to predict the manufacturing induced residual stress and deformation for composite laminates. This model utilizes shell elements in commercial finite element software to represent the composite laminate, and is able to predict spring-in and residual stress caused by non-mechanical loading. However, limitations of existing shell elements in Abaqus result in disagreement when considering deformation caused by the change of transverse shear stiffness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Multidisciplinary
Fei Tao, Xin Liu, Haodong Du, Wenbin Yu
Summary: This paper presents a finite element coupled positive definite deep neural networks mechanics system (FE-PDNN) that enables learning of the constitutive law based on structural level response and solves the convergence robustness issue in severely damaged materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Energy & Fuels
Qiren Zhu, Yichen Zong, Wenbin Yu, Wenming Yang, Markus Kraft
Summary: This study investigates the particulate formation process in diesel/Jet A-1 blends and highlights the potential of Jet A-1 as an alternative fuel for reducing emissions without sacrificing engine power output. The findings suggest that the pilot-injection strategy may weaken the oxidation process during combustion. Additionally, the research quantifies the impact of Jet A-1 on combustion and gas emission characteristics.
Article
Materials Science, Multidisciplinary
Ankit Deo, Wenbin Yu
Summary: This study presents a method to obtain equivalent 3D properties for composite thin-walled 3D structures using the concept of mechanics of structure genome. The approach involves discretizing the structure into frame elements and minimizing the remaining energy with respect to unknown fluctuating functions. It offers advantages over existing models in terms of handling structures with different complexities and internal geometries.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Rong Chiu, Wenbin Yu
Summary: Heterogeneous Solid Element (HSE) models a heterogeneous body as an equivalent solid element based on Mechanics of Structure Genome (MSG), providing higher accuracy compared to traditional multiscale modeling techniques for composite materials. HSE homogenizes heterogeneous microstructures into equivalent solid elements, introducing a novel concept for multiscale modeling.
COMPOSITE STRUCTURES
(2022)
Article
Environmental Sciences
Guixin Wang, Wenbin Yu, Zining Yu, Xiaobo Li
Summary: With the increasingly strict emission requirements for diesel engines, reducing emissions has become a key technology. This study investigates the influence of fuel injection on combustion and emission characteristics of marine diesel engines through numerical simulations and experimental validations. By optimizing the structural parameters of the fuel injection system, the performance, economy, and emission characteristics of diesel engines can be improved simultaneously.
Article
Engineering, Mechanical
Liang Zhang, Haodong Du, Wenbin Yu
Summary: The paper applies the mechanics of structure genome (MSG) to chiral metastructures and introduces various models to identify the smart properties of these structures. It is found that 3D metastructures consisting of missing rib UCs exhibit a shear coupling instead of being auxetic, while different beam- and plate-like metastructures show smart properties such as extension-twist, shear, and bend-twist couplings.
ACTA MECHANICA SINICA
(2023)
Article
Energy & Fuels
Qiren Zhu, Yichen Zong, Yong Ren Tan, Jieyao Lyu, Wenbin Yu, Wenming Yang, Markus Kraft
Summary: This study investigates the effects of diesel/n-butanol blends on particulate matter (PM) emissions in a common-rail diesel engine. The results show that the addition of n-butanol can improve fuel and oxidizer mixing, resulting in lower chamber temperature and reduced emissions of HC, NOx, and PM. The study also finds that n-butanol increases the oxidative reactivity of soot particles and shorter combustion duration leads to higher disorder level of particles.
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.