Thermal Science最新文献

Design of a biomimetic thermal interface material based on soybean lecithin and its transient high heat flux heat dissipation 基于大豆卵磷脂的仿生热界面材料的设计及其瞬态高热流密度散热

4区工程技术

Thermal Science Pub Date : 2026-01-01 DOI: 10.2298/tsci2601165l

Min Li, Xiaocui Qi, Rongyao Li, Rufeng Wang, Dandan Yu

引用次数: 0

Study on the explosion suppression performance of methane-air mixtures based on NH4H2PO4-modified dry water gel 基于nh4h2po4改性干水凝胶的甲烷-空气混合物抑爆性能研究

4区工程技术

Thermal Science Pub Date : 2025-07-04 DOI: 10.2298/tsci250411125s

Hao Sun, Guoxun Jing, Chuang Liu, Hailin Jia

{"title":"Study on the explosion suppression performance of methane-air mixtures based on NH4H2PO4-modified dry water gel","authors":"Hao Sun, Guoxun Jing, Chuang Liu, Hailin Jia","doi":"10.2298/tsci250411125s","DOIUrl":"https://doi.org/10.2298/tsci250411125s","url":null,"abstract":"As a vital energy source, CH4 poses significant explosion risks that threaten industrial safety. To address the limitations of conventional CH4 explosion suppressants, a modified dry water gel ( mathrm{NH_4}mathrm{H_2}mathrm{PO_4} -SCDW) was prepared by incorporating 5 wt.% mathrm{NH_4}mathrm{H_2}mathrm{PO_4} , 0.1 wt.% sodium alginate, and 0.05 wt.% calcium lactate. The physical properties and explosion suppression performance of the composite were systematically evaluated. Experimental results showed that NH?H?PO?-SCDW exhibited not only excellent structural stability and water retention capability, but also rapid water release under high temperature conditions, thereby effectively suppressing explosions. In pipeline explosion tests, mathrm{NH_4}mathrm{H_2}mathrm{PO_4} -SCDW exhibited significantly better suppression performance than conventional dry water, with the peak overpressure at pressure sensor 1# reduced by approximately 16.95% on average, and the flame propagation distance shortened by 24.13% at a spray dosage of 0.48 g. Mechanism analysis revealed that mathrm{NH_4}mathrm{H_2}mathrm{PO_4} -SCDW suppresses methane combustion through the synergistic effects of physical and chemical inhibition, effectively interrupting the combustion chain reaction. This study provides theoretical support and experimental evidence for the development of high-efficiency and environmentally friendly fire and explosion suppressants.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"30 1 Part B","pages":"591-602"},"PeriodicalIF":0.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=0354-98362500125S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147885017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of equivalence ratio on the deflagration characteristics premixed acetylene/air under a weak constraint 弱约束下等效比对乙炔/空气预混燃烧特性的影响

4区工程技术

Thermal Science Pub Date : 2025-01-01 DOI: 10.2298/tsci241111033z

Beibei Zhang, Yang‐Fan Cheng, Xiangdong Li, Wei Xiao, Jiaqi Qian

{"title":"Effects of equivalence ratio on the deflagration characteristics premixed acetylene/air under a weak constraint","authors":"Beibei Zhang, Yang‐Fan Cheng, Xiangdong Li, Wei Xiao, Jiaqi Qian","doi":"10.2298/tsci241111033z","DOIUrl":"https://doi.org/10.2298/tsci241111033z","url":null,"abstract":"As an important energy resource, acetylene (C2H2) has a huge explosion risk during its production, storage and utilization processes, for the leaked C2H2 would easily blend with ambient air to form explosive mixtures, causing serious explosion accidents in the presence of ignition sources. A self-designed gas explosion facility were used to investigate the flame propagation behaviors and explosion characteristics of C2H2/air with different equivalence ratios, ?, under a weak constraint. Experimental results showed that with the increasing equivalence ratio, the amount of carbon black increased, resulting in the flame colors changed from light blue to khaki, and the decay rate of the maximum explosion pressure decreased gradually. The average flame propagation velocity and flame temperature reached the maximum value of 14.16 m/s at ? = 1.32 and 3617 K at ? = 1.96, respectively. With the static placing time enlarged, the explosion pressure change trend could be divided into three-stages of \"falling-standing-rising\". The results would help to provide the damage data of thermal and shock wave for C2H2 explosion prevention, and develop preventive measures to improve the safety of C2H2 application process industry.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"29 4 Part B","pages":"3253-3266"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=0354-98362500033Z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A spider-inspired electrospinning for fabrication of polyvinylidene fluoride nanofiber membranes 以蜘蛛为灵感的静电纺丝制备聚偏氟乙烯纳米纤维膜

4区工程技术

Thermal Science Pub Date : 2024-01-01 DOI: 10.2298/tsci2403251z

Lei Zhao, Ting Zhu, Qianwen Wang, Wei Li, Jumei Zhao, Jun Wang

引用次数: 2

Biomimetic microspheres with rough structure by the geometric potential theory 基于几何势理论的粗糙结构仿生微球

4区工程技术

Thermal Science Pub Date : 2024-01-01 DOI: 10.2298/tsci2403269x

Zhenzhen Xu, Qinqin Yang, Li-Bin Wang, Mingqiang Guan, Zhi Liu, Jianghui Zhao

{"title":"Biomimetic microspheres with rough structure by the geometric potential theory","authors":"Zhenzhen Xu, Qinqin Yang, Li-Bin Wang, Mingqiang Guan, Zhi Liu, Jianghui Zhao","doi":"10.2298/tsci2403269x","DOIUrl":"https://doi.org/10.2298/tsci2403269x","url":null,"abstract":"Rough structure microspheres developed using electrospinning show many superior properties, such as increased specific surface area and enhanced wettability, yielding numerous benefits to the applications in adsorption, separation, and others. In this study, biomimetic rough microspheres on string of polymethyl methacrylate nanofiber with hierarchical structure of micron-scale microsphere, and nanoscale Y-shape edges on the microsphere were innovatively and success-fully developed by electrospinning. The resulting microsphere exhibited a steering-wheel-like Y shape, and the formation process was physically explained by the geometric potential theory. In the spinning process, irregular hexahedron-like droplet was firstly formed. Then, the hexahedron-like droplet changed to tetrahedron-like after the bottom contacted the collector. The tetrahedron-like droplet evolved into Y-shaped microsphere due to the geometric potential and the collapse of the center part owing to the solvent evaporation. Furthermore, similar to the natural lotus leaf, the hierarchical steering-wheel structure strengthened the nanofiber membrane roughness and endowed the membrane with superhydro-phobicity, indicating the potential application in water treatment (oil-water separation, and dye and heavy metal ion adsorption), functional surface materials (self-cleaning fabrics), energy generation and other salient areas.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"28 3 Part A","pages":"2269-2275"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.doiserbia.nb.rs/ft.aspx?id=0354-98362403269X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Perioperative Acute Kidney Injury: Implications, Approach, Prevention. 围手术期急性肾损伤：意义、方法和预防。

IF 1.1 4区工程技术

Thermal Science Pub Date : 2023-12-01 Epub Date: 2023-07-19 DOI: 10.1016/j.aan.2023.06.005

Aditi Balakrishna, Jeremy Walco, Frederic T Billings, Marcos G Lopez

引用次数: 0

Experimental investigation of the effect of the use of nanoparticle additional biodiesel on fuel consumption and exhaust emissions in tractor using a coated engine 使用纳米颗粒附加生物柴油对使用涂层发动机的拖拉机燃料消耗和废气排放影响的实验研究

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304189o

Salih Ozer, Fatih Haciyusufoglu, Erdinc Vural

{"title":"Experimental investigation of the effect of the use of nanoparticle additional biodiesel on fuel consumption and exhaust emissions in tractor using a coated engine","authors":"Salih Ozer, Fatih Haciyusufoglu, Erdinc Vural","doi":"10.2298/tsci2304189o","DOIUrl":"https://doi.org/10.2298/tsci2304189o","url":null,"abstract":"This study focuses on reducing the fuel consumption and exhaust gas emission values of the tractor used in the agricultural field. With the additive added to the fuel and the coating of the tractor engine, the fuel consumption values were reduced, and agricultural production costs were tried to be reduced. On the other hand, exhaust emission values were also tried to be reduced and thus a more environmentally friendly production method was aimed to be adopted. For this reason, the cylinders of the tractor engine were coated with Al2O3 + 13%TiO2 metal powders mixed by mass using the plasma spray method. All experiments were repeated by attaching these coated pistons to the engine. The fuel used in the experiments was purchased from a commercial company and the nanoparticle (molybdenum) additive was added to the biodiesel at the rates of 25 ppm, 50 ppm, 100 ppm, and 200 ppm by mass. The fuel mixtures obtained in the coated and uncoated engine, when the engine is in the full throttle position, using the PTO load test unit at 1000 rpm, 1200 rpm, 1400 rpm, 1600 rpm, 1800 rpm, and 2000 rpm. It has been tested by loading at 2200 rpm, 2400 rpm, and 2600 rpm engine speeds. Code for the Official Testing of Agricultural and Forestry Tractor Performance standards were adhered to during all engine tests. The results showed that coating the cylinders and adding nanoparticles into biodiesel reduces the fuel consumption value, increases the exhaust gas temperature, decreases HC, CO, and PM emissions, and increases NOx emissions.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135440236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 simulation of slip behaviors and friction reduction effects in hydrophobic micro-channel in laminar flow conditions 层流条件下疏水微通道滑移行为及减摩效应的数值模拟

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304405d

Bekir Dogan, Mustafa Ozbey, Lutfu Namli, Unsal Aybek

{"title":"Numerical simulation of slip behaviors and friction reduction effects in hydrophobic micro-channel in laminar flow conditions","authors":"Bekir Dogan, Mustafa Ozbey, Lutfu Namli, Unsal Aybek","doi":"10.2298/tsci2304405d","DOIUrl":"https://doi.org/10.2298/tsci2304405d","url":null,"abstract":"In the study, a numerical simulation of the sliding properties of the rough and smooth surfaces with micro-structure was made. The simulation of shear flow in the micro-channel was performed with ANSYS FLUENT software. The 3-D and two-phase flow is simulated by choosing the volume of fluid model. In CFD analysis, water and air consist of two immiscible phases. In the calculations, if water is the first fluid and air is the second fluid, adjustments are made. At the beginning of the analysis, the channel was considered to be completely filled with air and the effect of gravity was ignored during the calculation. Water and air are considered Newtonian and incompressible fluids. In addition, laminar flow and steady-state calculations are made. It was found that the decrease in pressure drop increased with increasing distance between asperities (no-shear fraction). In the simulation results, approximately 14% of the velocity in the micro-channel axis was measured at the interface. The main purpose of this study is to evaluate the applicability of the volume of fluid model in a hydrophobic micro-channel flow designed in 3-D using ANSYS Fluent CFD software.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135440748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Artificial neural network assisted multi-objective optimization of a methane-fed DIR-SOFC system with waste heat recovery 人工神经网络辅助下的带余热回收的甲烷供气DIR-SOFC系统多目标优化

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304413a

Unsal Aybek, Lutfu Namli, Mustafa Ozbey, Bekir Dogan

引用次数: 0

Nine-parameter path synthesis of planar four-bar mechanism with the aid of the general equation of coupler curve 基于连杆曲线一般方程的平面四杆机构九参数轨迹综合

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304349m

Huseyin Mutlu

引用次数: 0