Powder Technology最新文献_第10页

Synergistic effects of particle shape and vibration on discharge from an inclined chute: An experimental study 颗粒形状和振动对斜槽卸料的协同效应：实验研究

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-10 DOI: 10.1016/j.powtec.2025.121352

Praveen Dubey, Jeetram Yogi, Salma Khatoon, Rakhi Yadav, Anshu Anand

{"title":"Synergistic effects of particle shape and vibration on discharge from an inclined chute: An experimental study","authors":"Praveen Dubey, Jeetram Yogi, Salma Khatoon, Rakhi Yadav, Anshu Anand","doi":"10.1016/j.powtec.2025.121352","DOIUrl":"10.1016/j.powtec.2025.121352","url":null,"abstract":"<div><div>The average mass discharge rate in an inclined chute system is the parameter of primary industrial importance. This flow parameter depends on both system-level parameters like inclination angles and vibration as well as particle-level parameters like the shape of particles. This experimental study sets out to investigate the relative importance of the various factors that affect the discharge behavior of non-spherical particles (prolate, oblate, and cube). The contour plot of the synergistic effect of vibration and inclination is divided into three zones: gravity-driven, vibration-driven, and intermediary dual zones. The gravity-driven zone relies on steep inclination angles and minimal vibration to achieve high discharge rates, the vibration-driven zone uses high vibration intensity to compensate for low inclination angles, and the intermediary dual zone represents a balance between these two forces. This study reveals that vibration and gravity affect discharge rates differently for different particle shapes. Spherical particles exhibit the highest discharge rates, while cubical particles have the lowest. Specifically, for cubical particles, vibration can potentially reduce the no-flow zone at lower inclination angles. Based on the data collected in all the zones, the Pearson correlation matrix shows that the average mass discharge rate is most influenced by the inclination angle followed by vibration intensity and least by the particle shape.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121352"},"PeriodicalIF":4.5,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Research on the classification performance of a self-aspirating three-product hydrocyclone 自吸式三产物水力旋流器分级性能研究

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-10 DOI: 10.1016/j.powtec.2025.121388

Peikun Liu , Haikuo Sun , Bo Chen , Lanyue Jiang , Zhiyuan Han , Tianyi Wang , Jingyu Liu , Yunzhu Gao , Gang Liu

{"title":"Research on the classification performance of a self-aspirating three-product hydrocyclone","authors":"Peikun Liu , Haikuo Sun , Bo Chen , Lanyue Jiang , Zhiyuan Han , Tianyi Wang , Jingyu Liu , Yunzhu Gao , Gang Liu","doi":"10.1016/j.powtec.2025.121388","DOIUrl":"10.1016/j.powtec.2025.121388","url":null,"abstract":"<div><div>To address the issue of flow field fluctuations in the first-stage hydrocyclone, which negatively impacts the separation accuracy of the conventional three-product hydrocyclone, a self-aspirating three-product hydrocyclone was proposed in this paper. Numerical simulations and experimental studies were performed to analyze the separation characteristics of the self-aspirating three-product hydrocyclone. Simulation results indicate that design of the suction hole would help alleviate turbulent disruption in the upstream inner vortex due to high-flow suction, thereby strengthening the classification effect for fine particles. Experimental results demonstrate that the first-stage overflow yield of the self-aspirating three-product hydrocyclone increases with finer particle sizes and improves comprehensive classification efficiency. However, excessive air-hole size increases the likelihood of coarse particles entering the first-stage overflow via upward airflow, with the optimal air-hole diameter determined to be 5 mm. These findings are conducive to enriching hydrocyclone separation theory and offering theoretical guidance for the design and utilization of multi-product cyclones.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121388"},"PeriodicalIF":4.5,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Transport and retention of non-spherical suspended colloidal particles in randomly packed beads 非球形悬浮胶体颗粒在随机填充珠中的运输和保留

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121378

Yaoming Chen , Dian Fan , Bin Yuan , Huilin Hou , Ling Zhou , Siyuan Huang

{"title":"Transport and retention of non-spherical suspended colloidal particles in randomly packed beads","authors":"Yaoming Chen , Dian Fan , Bin Yuan , Huilin Hou , Ling Zhou , Siyuan Huang","doi":"10.1016/j.powtec.2025.121378","DOIUrl":"10.1016/j.powtec.2025.121378","url":null,"abstract":"<div><div>Understanding the transport and retention of colloidal particles in fluid-saturated porous media is important in many scientific and engineering applications. The dynamics of such particles in porous media are largely affected by the particle size and shape. Here, we simulate many particles of different sphericities transported in randomly packed beads by implementing an integrated computational fluid dynamics-discrete element method (CFD-DEM) approach and a two-way coupling that accounts for the fluid-particle interactions. Our results show that, compared to spherical particles, non-spherical particles tend to migrate along streamlines more readily, resulting in a higher mean dispersivity; such particles also tend to sweep a larger volume of the pore space, leading to a more uniform spatial distribution of retained particles. To support our numerical observations, we report a particle velocity probability distribution function that dictates the impact of particles' asphericity on their dispersion, and report a tri-modal distribution function that describes the straining patterns of the particles in space. Said function compiles all numerical observations and distinguishes between the straining and dispersion characteristics. We also discuss similarities and differences between new functions and the function applicable to spherical particles. The presented function can be useful in designing particle topology to achieve specific velocity distributions or mean dispersivity of interest.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121378"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Molecular dynamics simulation of the effect of modified soybean protein isolate on the wettability of bituminous coal 改性大豆分离蛋白对烟煤润湿性影响的分子动力学模拟

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121376

Yanbin Yu , Sai Li , Wenting Cui , Jie Zang , Lianxin Fang , Shi Yin , Gonggang Cui

{"title":"Molecular dynamics simulation of the effect of modified soybean protein isolate on the wettability of bituminous coal","authors":"Yanbin Yu , Sai Li , Wenting Cui , Jie Zang , Lianxin Fang , Shi Yin , Gonggang Cui","doi":"10.1016/j.powtec.2025.121376","DOIUrl":"10.1016/j.powtec.2025.121376","url":null,"abstract":"<div><div>To improve the wettability of traditional soy protein isolate (SPI) toward coal dust, this study used SPI as the matrix and employed chemical modification techniques to graft copolymerize SPI with polyacrylamide (PAM) and glycerol (Gl) monomers. Surfactant lauryl glucoside (APG) was then incorporated into the modified solution to prepare SPI-Gl, a polymer dust suppressant with excellent wettability. In this study, the mechanism of the effect of dust suppressant on the wetting characteristics of bituminous coal was investigated by combining experimental tests and Molecular dynamics (MD) simulation. Experimental data demonstrated that SPI-Gl solution enhanced the anti-evaporation performance of coal samples, reducing their water loss rate and contact angle with coal dust surfaces. MD simulations further showed that after adding the dust suppressant, the adsorption layer thickness at the water/coal interface increased from 19 Å to 26 Å, while the water molecules' diffusion coefficient decreased to 0.2960. Additionally, the maximum negative and positive potentials of SPI-Gl molecules were higher than those of water molecules, and the interaction energy was further reduced to −534.0296 kcal/mol. This proved that the dust suppressant inhibited the migration of water molecules by enhancing interfacial adsorption force, thereby improving wettability. This study provides a theoretical basis for the development of wettable polymer dust suppressants and offers guidance for optimizing dust removal technologies.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121376"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of KT-GLDA compound solution on the impact characteristics and pore structure of coal KT-GLDA复合溶液对煤冲击特性及孔隙结构的影响

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121361

Feng Zhang , Jinxiao Liu , Chang Sun , Jiawei He , Kai Zhang , Zhongcheng Qin

{"title":"Effect of KT-GLDA compound solution on the impact characteristics and pore structure of coal","authors":"Feng Zhang , Jinxiao Liu , Chang Sun , Jiawei He , Kai Zhang , Zhongcheng Qin","doi":"10.1016/j.powtec.2025.121361","DOIUrl":"10.1016/j.powtec.2025.121361","url":null,"abstract":"<div><div>With the increase in coal mining depth, the crustal stress rises. The mineral cementation in coal seams becomes more compact, resulting in poorer water injection effectiveness. To enhance water injection performance and soften coal seams while reducing their burst proneness, a new compound solution was prepared using the surfactant KT and the chelating agent GLDA. The experimental results showed that the synergistic effect of KT-GLDA compound solution was significant. After being treated with the new KT-GLDA compound solution, elliptical dissolution pores appeared on the coal surface, forming dissolution peaks and river like grooves, which greatly increased the effective porosity and moisture content, rising from 1.51 % and 1.86 % to 4.06 % and 7.42 %. At the same time, The uniaxial compressive strength decreased from 15.67 MPa to 5.62 MPa, elastic modulus decreased from 1.61 GPa to 0.75 GPa, elastic strain energy index W<sub>ET</sub> decreased from 4.01 to 1.95, bursting energy index K<sub>E</sub> decreased from 4.21 to 1.35, duration of dynamic fracture DT increased from 280 ms to 6140 ms. Research indicates that the KT-GLDA composite solution interacts with minerals within coal, creating new pores and altering the coal's internal structure and mechanical properties. It increases the moisture content, reduces the strength and decreases the accumulation of elastic energy in coal. This effectively mitigates the tendency for coal seam bursts and enhances the effectiveness of water injection. This provides a theoretical basis for safe mining and the prevention rock burst in similar coal mines.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121361"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Modeling electrostatic field evolution in industrial silos considering inter-particle voids and charge disparity 考虑粒子间空隙和电荷差异的工业筒仓静电场演化模型

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121385

Gaoqiang Zhang , Cai Liang , Qun Zhou

{"title":"Modeling electrostatic field evolution in industrial silos considering inter-particle voids and charge disparity","authors":"Gaoqiang Zhang , Cai Liang , Qun Zhou","doi":"10.1016/j.powtec.2025.121385","DOIUrl":"10.1016/j.powtec.2025.121385","url":null,"abstract":"<div><div>The evolution of electrostatic fields in silos is critical for evaluating discharge risks during industrial powder handling. However, most existing models primarily focus on bulk charge accumulation, often overlooking the spatial heterogeneity of the powder bed. In this work, we develop a numerical model that incorporates inter-particle voids and charge disparity to simulate electrostatic field evolution during silo filling. The model is calibrated using powder filling experiments, with validation performed based on measured electric field strength and corresponding discharge imaging. The mechanisms of powder void structure and particle charge disparity on local field distortion are elucidated, and their effects on the spatial distribution of electric fields in the silo are systematically analyzed. Results show that voids can amplify local electric field strength by more than a factor of two, while charge disparities further exacerbate electric field distortion. Increasing the void fraction enhances electric field strength in the central region but suppresses it near the silo wall, creating variable discharge risks at different fill heights. Moreover, greater charge disparity increases both the intensity and frequency of electric field distortions. With the emergence of bipolar charges, the distortion frequency stabilizes, but peak field strength continues to rise.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121385"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 and experimental research on lunar regolith powder spreading 月球风化粉扩散的数值与实验研究

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121384

Haitao Wang , Honglun Yang , Biao Xie , Mingqi Sun , Shunuan Liu , Chenglin Yi , Wei Chen , Wenxiu Chen

{"title":"Numerical and experimental research on lunar regolith powder spreading","authors":"Haitao Wang , Honglun Yang , Biao Xie , Mingqi Sun , Shunuan Liu , Chenglin Yi , Wei Chen , Wenxiu Chen","doi":"10.1016/j.powtec.2025.121384","DOIUrl":"10.1016/j.powtec.2025.121384","url":null,"abstract":"<div><div>Powder Bed Fusion (PBF) has proven to be a viable method for constructing lunar bases using lunar regolith (LR). The quality of the LR powder bed greatly impacts the formation of pores and cracks in fabricated samples, which subsequently affects the mechanical properties of the samples. To address this problem, the model of irregularly shaped and micron-sized LR particles is built which is based on the discrete element method (DEM), and the LR powder spreading mechanism is established. The powder model is validated through experiments measuring repose angle and bulk density. Within the predefined parameter ranges, the simulation results reveal that for single scraper and roller spreading, the determined process parameters are the scraper angle of 60°, the roller diameter of 4 mm, the spreading speed of 0.02 m/s, and the layer thickness of 0.75 mm. The compound spreading investigates using a scraper and roller at the same time. The simulation shows that when the scraper is used for pre-deposition, the porosity and surface roughness of the bed decrease by 14.42 % and 26.67 % compared to using the roller for pre-deposition. Under their respective optimal parameters, the powder bed porosity with compound laying is 8.9 % and 14.27 % lower than that achieved by single roller and scraper spreading, respectively. The results demonstrate that compound spreading with scraper pre-deposition is an effective strategy to enhance powder bed quality. Additionally, the compound spreading process under lunar low gravity conditions is evaluated.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121384"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Ball milling of mung bean seeds into nanoflour: Studies on particle size, surface morphology, microstructure, rheology, and thermal properties 绿豆种子球磨成纳米粉：粒径、表面形貌、微观结构、流变学和热性能的研究

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121381

Jasim Ahmed , Isameldeen E. Daffallah , Abdullah Alazemi , Mahmoud Soliman , Lidia Emmanuval , Bini T. Balakrishnan , Nickey M. Thomas

{"title":"Ball milling of mung bean seeds into nanoflour: Studies on particle size, surface morphology, microstructure, rheology, and thermal properties","authors":"Jasim Ahmed , Isameldeen E. Daffallah , Abdullah Alazemi , Mahmoud Soliman , Lidia Emmanuval , Bini T. Balakrishnan , Nickey M. Thomas","doi":"10.1016/j.powtec.2025.121381","DOIUrl":"10.1016/j.powtec.2025.121381","url":null,"abstract":"<div><div>Size reduction is one of the most important unit operations for the utilizing grains in the food industry. In this work, ball milling was used to produce ultrafine flour from mung bean seeds. The focus of the study was to understand the influence of selected ball sizes (3, 6, and 10 mm) and their combinations on the particle size, functional, thermal, and microstructural properties of produced nanoflours. Overall, the particle sizes were ranged in the nanoscale (222 to 273 nm), and the particle size increased with larger ball diameters, however, ball combinations had a mixed response. The zeta potential (−17.9 to −25 mV) of ball-milled particles indicates that these nanoflours were electrostatically stable in dispersion. Both FTIR spectra and XRD diffractograms demonstrated minimal changes of the flours, however, DSC and TGA thermograms indicate ball size or a combination influences the milled particles and their compositions. SEM micrographs of flour indicate a transformation of nanoparticles into flakes. The AFM surface topography displayed a systematic arrangement of nanoflour surface produced using the smallest balls; however, the larger balls produced surfaces with dispersed particles or in aggregates. Rheologically, blended ball- produced flours were more viscoelastic than the individual ball-milled flour samples. The obtained results could be useful for the development of emulsified food and pharmaceutical products with functionality and Pickering emulsions.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121381"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microstructural evolution and property correlation of Cu–Fe powders prepared by magnetic field fluidized bed electrodes 磁场流化床电极制备Cu-Fe粉末的微观结构演变及性能相关性

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121379

Hongtao Li , Haitao Yang , Xin Wang , Jiaxin Cheng , Guohui Fu , Liansheng Xu , Qingping Chai

{"title":"Microstructural evolution and property correlation of Cu–Fe powders prepared by magnetic field fluidized bed electrodes","authors":"Hongtao Li , Haitao Yang , Xin Wang , Jiaxin Cheng , Guohui Fu , Liansheng Xu , Qingping Chai","doi":"10.1016/j.powtec.2025.121379","DOIUrl":"10.1016/j.powtec.2025.121379","url":null,"abstract":"<div><div>Cu–Fe powders have been extensively utilized in fields like diamond tools, friction materials and oil−impregnated bearings. Deficiencies still exist in the existing preparation methods for Cu–Fe powders regarding coating quality, preparation process and environmental protection, so new preparation techniques are required to be explored urgently. Through the combination of magnetic field fluidization and fluidized bed electrodes, a preparation method for metal−coated powders is innovated in this study, and Cu–Fe metal composite powders with excellent properties are successfully prepared via parameter optimization. A comparative analysis is carried out on the coating structures and electromagnetic properties of the powders prepared by the magnetic field fluidized bed electrodeposition method (Cu–Fe(E)) and the traditional displacement plating method (Cu–Fe(D)). It has been found in the research that the (111) and (220) crystal planes of Cu–Fe(E) are the preferentially growing crystal planes, with the peak shape being superior to that of Cu–Fe(D). At 4.5 GHz, the electromagnetic shielding effectiveness of Cu–Fe(E) powders can attain 14.61 dB, which is higher than that of Cu–Fe(D) powders. Under the pressure of 200 MPa, the electrical conductivity of Cu–Fe(E) powders is 18,337.64 S·cm<sup>−1</sup>, approximately eight times that of Cu–Fe(D) powders. Compared with the traditional displacement plating method, Cu–Fe(E) powders demonstrate more outstanding coating structures and properties, encompassing uniform and dense coatings, a more intact crystal structure, effectively enhanced electrical conductivity and electromagnetic shielding effectiveness. This novel magnetic field fluidized bed electrodeposition technology offers new perspectives for the field of Cu–Fe powder preparation.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121379"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Ultrasonic agglomeration of flowing aerosol particles: Experiments and fixed pivot-based spatial population balance modeling 流动气溶胶颗粒的超声团聚：实验和基于固定枢轴的空间人口平衡模型

IF 4.5 2区工程技术

Powder Technology Pub Date : 2025-07-09 DOI: 10.1016/j.powtec.2025.121375

Pengzhan Liu , Xin Zhang , Xiaopeng Shang , Duojia Shi , Morgan WeiZhi Tan , Guicai Liu , Shi Hao Lim , Hang Yin , Man Pun Wan , Grzegorz Lisak , Bing Feng Ng

{"title":"Ultrasonic agglomeration of flowing aerosol particles: Experiments and fixed pivot-based spatial population balance modeling","authors":"Pengzhan Liu , Xin Zhang , Xiaopeng Shang , Duojia Shi , Morgan WeiZhi Tan , Guicai Liu , Shi Hao Lim , Hang Yin , Man Pun Wan , Grzegorz Lisak , Bing Feng Ng","doi":"10.1016/j.powtec.2025.121375","DOIUrl":"10.1016/j.powtec.2025.121375","url":null,"abstract":"<div><div>Acoustic agglomeration (AA) is a promising technology for pre-conditioning of aerosol particles in industrial and civil settings. Although substantial experimental and modeling studies have been separately conducted under the temporal AA framework, systematic parallel experimental and numerical studies towards a deterministic spatial AA framework that may involve complex spatial inhomogeneity have few been executed yet. Here, we experimentally investigate the effects of ultrasonic agglomeration on spatial population evolutions of flowing aerosol particles. Parallelly, we develop a numerical algorithm that adapts the fixed pivot approach to perform the AA-induced spatial population balance modeling (FP-SPBM). Using this algorithm, the dependency of spatial AA performance on different parameters under both traveling-wave and standing-wave ultrasonic fields are numerically investigated. The results indicate that for a standardized initial particle size distribution (PSD), the peak position of particle number concentration (PNC) gradually shifts larger and the PNC peak drops continuously with spatial position under ultrasound. Specifically, across a 5-m distance, the position of PNC peak shifts from 2 μm to 2.4 μm, and the corresponding PNC peak drops by around 6.6 × 10<sup>4</sup> #/cm<sup>3</sup> with the sound pressure level, flow speed, and initial total PNC of 140 dB, 1 m/s and 1 × 10<sup>5</sup> #/cm<sup>3</sup>, respectively. This study successfully captures spatial population evolutions of aerosol particles caused by AA, paving a way to the AA designs of spatial operation conditions. Moreover, the FP-SPBM methodology can perform SPBM under complex acoustic scenarios and can become an efficient design tool to maximum spatial AA efficiencies for practical applications.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"465 ","pages":"Article 121375"},"PeriodicalIF":4.5,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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