Particuology最新文献

{"title":"Optimisation of parameters of a dual-axis soil remediation device based on response surface methodology and machine learning algorithm","authors":"Zhipeng Wang,&nbsp;Tong Zhu,&nbsp;Youzhao Wang,&nbsp;Feng Ma,&nbsp;Chaoyue Zhao,&nbsp;Xu Li,&nbsp;Yanping Zhang","doi":"10.1016/j.partic.2024.10.013","DOIUrl":"10.1016/j.partic.2024.10.013","url":null,"abstract":"<div><div>To accelerate the recycling of black soil, it is necessary to develop a new type of soil remediation equipment to improve its working efficiency. The one-way test was used to determine the mean level value of the steepest climb test, and the combined equilibrium method was used to determine the upper and lower interval levels of the response surface test for parameter optimisation. Based on the results of the response surface indices, machine learning was performed and the optimal model was determined. The results show that the predictive ability and stability of the decision tree model for the two indicators are better than that of random forest and support vector machine. The optimal parameter combinations determined using the decision tree model are: speed 73 rpm, homogenisation pitch 183 mm, homogenisation time 1 s, descent speed 0.06 m/s. The error between the optimal value of the machine learning prediction model and the actual simulation is 1.1% and 5.72%, respectively. The results of the study show that the effect of optimizing the parameters through machine learning achieves a satisfactory prediction accuracy.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"96 ","pages":"Pages 26-43"},"PeriodicalIF":4.1,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesoscale modeling on the influence of surfactants on seepage law during water injection in coal","authors":"Yanan Miao ,&nbsp;Haoran Li ,&nbsp;Mingzhu Zhu ,&nbsp;Chaojie Zhao ,&nbsp;Tengwen Zhang ,&nbsp;Hussein Mohammed Ahmed Kaid","doi":"10.1016/j.partic.2024.10.014","DOIUrl":"10.1016/j.partic.2024.10.014","url":null,"abstract":"<div><div>To investigate the mesoscopic influence of surfactants on seepage law during water injection in coal seam, this paper innovatively establishes a fluid transport lattice Boltzmann (LBM) model by incorporating the seepage resistance generated from the porous media and external forces, which embodies the impact of wettability degree resulted from cocamidopropyl betaine (CAB), sodium dodecyl sulfate (SDS), and coconutt diethanol amide (CDEA) reagents at a 0.1% concentration. The main conclusions derived from this investigation are as follows: Firstly, as the lattice number in the X direction increases, the average seepage velocities in coal samples treated by deionized water, 0.1% CAB, 0.1% SDS, and 0.1% CDEA reagents (Nos. 1, 2, 3, and 4) exhibit three distinct stages: rapid decline, slow decline, and steady decline; in comparison to raw coal sample, modified coal samples demonstrate decreases of 20.84%, 33.91%, and 61.70%, respectively. Secondly, the critical values of displacement pressure difference exist during the phenomenon that modified reagents spread out in the entire flow channel, which are 3.5, 3.5, and 5.2 MPa, respectively, for coal samples Nos. 2, 3, and 4; this signifies that surpassing these critical values help prevent issues such as blank belts within the wetting range and insufficient dust control. Finally, at a displacement pressure difference of 0.01 (lattice unit), the average velocity ratios for samples (Nos. 2, 3, and 4) are 0.78, 0.56, and 0.37 (lattice unit), respectively; notably, the water flow velocities in modified coal samples are lower compared to that in raw coal sample, indicating that the addition of surfactants impede the seepage process of water injection in coal seam. Moreover, when the displacement pressure difference reaches 0.03 (lattice unit), the velocity ratio of CDEA-modified coal sample exceeds 100%; this means that when the displacement pressure difference surpasses 15.6 MPa, the water injection effect of CDEA-modified coal sample begins to be improved. These research findings offer a theoretical basis for enhancing water injection technology in coal mines.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"96 ","pages":"Pages 1-13"},"PeriodicalIF":4.1,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of hydraulic transport characteristics and erosion wear of twisted four-lobed pipe based on CFD-DEM","authors":"Chunya Sun ,&nbsp;Zhifang Xu ,&nbsp;Yanqiu Xiao ,&nbsp;Guangzhen Cui ,&nbsp;Zhengdong Xiao ,&nbsp;Wanbin Cui ,&nbsp;Pengpeng Wang ,&nbsp;Lianhui Jia","doi":"10.1016/j.partic.2024.10.011","DOIUrl":"10.1016/j.partic.2024.10.011","url":null,"abstract":"<div><div>Pipeline hydraulic transportation is extensively utilized across diverse sectors, with enhancing the performance of pipeline hydrodynamic transport and minimizing erosion wear on the pipeline walls being essential for ensuring the stability of pipeline operations. This paper introduces a methodology for the hydraulic transport of a twisted four-lobed pipe, employing a numerical and erosion model developed through the CFD-DEM (computational fluid dynamics and discrete element method) coupling approach. An experimental circulating flow platform is constructed for validation purposes. The performance of the pipe is assessed by analyzing key indices including fluid velocity, pressure drop, particle trajectory, and erosion wear. The results indicate that twisted four-lobed pipe enhances fluid flow rates, facilitating particle discharge and mitigating accumulation, with reduced wear compared to the twin twist triangle spiral pipe. The analysis of structural parameters’ impact on hydraulic conveyance is also presented. These findings offer theoretical insights for optimizing pipeline performance in hydraulic conveyance while minimizing wear.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 356-369"},"PeriodicalIF":4.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive numerical investigation of the spray characteristics in spill-return atomizers using coupled VOF and Euler-Lagrange approach","authors":"Wassim Harizi,&nbsp;Fathi Hamdi,&nbsp;Mouldi Chrigui","doi":"10.1016/j.partic.2024.10.010","DOIUrl":"10.1016/j.partic.2024.10.010","url":null,"abstract":"<div><div>This research paper investigates a three-dimensional, two-phase flow dynamics, and atomization characteristics of a spill return atomizer. The method includes the internal flow field, primary and secondary atomization which are modeled using the hybrid approach Volume of Fluid to Discrete Phase Model (VOF to DPM). A comparison between the Large Eddy Simulation (LES) and The k-omega Shear Stress Transport turbulence model (SST <em>k</em><em>-ω</em>) in combination with the Volume of Fluid (VOF) model, along with the Adaptive Mesh Refinement (AMR) method, to predict the breakup of the liquid core is carried out. The investigation presents axial and tangential distributions of velocity, mean diameter, and spray cone angle of droplets at spray pressures of Spill-to-Feed Ratio (SFR) equal to 0.9. The numerical results are validated against the Phase-Doppler Anemometry (PDA) experiment. A relative error, of less than 7.3%, is recorded. The study systematically explores the spatiotemporal evolution of the flow field, including the liquid surface wave motion, liquid film characteristics, and the formation/atomization of the fluid spray cone downstream of the injector.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 319-332"},"PeriodicalIF":4.1,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of excellent building materials using geopolymer instead of traditional cement","authors":"Yuanchuan Ren ,&nbsp;Shanqisong Huang ,&nbsp;Yan Hu ,&nbsp;Nanqi Ren ,&nbsp;Lingrui Kuang ,&nbsp;Fenghui Wu ,&nbsp;Dandan Chen ,&nbsp;Xuejun Zhu ,&nbsp;Qiang Niu","doi":"10.1016/j.partic.2024.10.009","DOIUrl":"10.1016/j.partic.2024.10.009","url":null,"abstract":"<div><div>In order to improve the resource utilization rate of aluminum ash, high-quality building materials were prepared by replacing traditional cement with aluminum ash, and the performance of building materials under different conditions and factors was studied. The experimental results show that when the pressure was 300 MPa and the natural curing time was 3 days, the comprehensive performance of the brick reaches its optimum (compressive strength of 60 MPa, flexural strength of 1.3 MPa, and softening coefficient of about 0.9), far superior to other reported methods for preparing building materials. SEM-EDS, Particle size analysis and XRD confirmed that the crystal structure in aluminum ash undergoes a transformation under high-intensity mechanical pressure, forming cement-based active substances. This study not only obtained a new method for preparing building materials, but also further promoted the research on the resource utilization of aluminum ash, providing a new approach for the treatment and disposal of hazardous waste.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 333-342"},"PeriodicalIF":4.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A modified drag model for the fluidization of nano-modulated Group C particles","authors":"Kuankui Guo ,&nbsp;Zhengyuan Deng ,&nbsp;Jiaying Wang ,&nbsp;Jingtao Wang ,&nbsp;Jesse Zhu","doi":"10.1016/j.partic.2024.10.007","DOIUrl":"10.1016/j.partic.2024.10.007","url":null,"abstract":"<div><div>Geldart Group C powders are inherently cohesive due to the strong interparticle forces, leading to severe agglomeration and poor fluidization capability. In this study, fluidization of nano-modulated Group C particles was investigated numerically. These particles, also known as Group C⁺ particles, were obtained through the nanoparticle modulation technique, with which a small fraction of nanoparticles were vigorously mixed with Group C particles so that they are adhered to the surface of the much larger Group C particles. After modification, the cohesiveness of Group C⁺ particle was significantly weakened, and therefore these particles could exhibit much better fluidization quality. However, the still existing cohesion resulted in the formation of small agglomerates within the system. To understand the internal agglomeration mechanisms of Group C⁺ particles and their impact on fluidization behaviors, a new drag model was proposed based on experimental results and the postulation of particle agglomeration. The numerical results of the cases employing the new drag model agreed well with the experimental data in terms of total and dense phase expansion. These findings revealed the drag mechanism associated with modified Group C particles, contributing to the understanding of ultrafine particle fluidization.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"96 ","pages":"Pages 14-25"},"PeriodicalIF":4.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on the hydraulic performance and erosion wear characteristic of the centrifugal slurry pump","authors":"Aoqiang Duan,&nbsp;Zhe Lin,&nbsp;Desheng Chen,&nbsp;Yi Li","doi":"10.1016/j.partic.2024.10.006","DOIUrl":"10.1016/j.partic.2024.10.006","url":null,"abstract":"<div><div>The centrifugal slurry pump is widely applied for the transportation of liquid medium containing solid particles. The introduction of solid particles will lead to a decrease in efficiency and wear of the slurry pump. To solve this problem, it is imperative to review the hydraulic performance and erosion characteristic of slurry pumps under solid-liquid two-phase flow in recent years. In this review, firstly, the general structure and engineering application are introduced. Next, the experimental and simulation research methods of particle movement and erosion wear are explored. Then, the influence of solid particles on the hydraulic performance and particle distribution is analyzed. Afterwards, the variation laws of erosion wear under different flow-passing components and particle properties are clarified. Finally, according to the current research status and conclusions, the design optimization measures and future investigate direction are proposed, aiming to promote the resolution of wear damage and extend the service life of the slurry pump.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 370-392"},"PeriodicalIF":4.1,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic impact mechanism of particle size and morphology in superalloy powders for additive manufacturing","authors":"Lichong Zhang ,&nbsp;Liang Zheng ,&nbsp;Wenyong Xu ,&nbsp;Na Liu ,&nbsp;Yufeng Liu ,&nbsp;Yibo Zhang ,&nbsp;Jingjing Liang ,&nbsp;Zhou Li ,&nbsp;Guoqing Zhang","doi":"10.1016/j.partic.2024.10.002","DOIUrl":"10.1016/j.partic.2024.10.002","url":null,"abstract":"<div><div>The particle size and morphology of superalloy powders are crucial parameters that significantly influence the performance of additive manufacturing (AM) processes. This study investigates the effects of atomization pressure on these characteristics through a combination of computational fluid dynamics (CFD) simulations and vacuum induction melting gas atomization (VIGA) experiments. The CFD simulations revealed that increasing the atomization pressure from 2.0 MPa to 3.5 MPa resulted in a rise in maximum gas velocity from 526 m/s to 537 m/s and a reduction in median particle size (<em>D</em>₅₀) from 60.9 μm to 37.5 μm. Subsequent experiments demonstrated a decrease in <em>D</em>₅₀ from 52.9 μm to 35.6 μm, and sphericity from 0.9432 to 0.9377, as pressure increased. The particle size results of the atomization experiments and numerical simulations show strong consistency, validating the accuracy of the numerical simulation results. The volume of hollow particles also increased slightly in specific size fractions. These results suggest that higher atomization pressures produce finer powders with lower sphericity, but also promote particle adhesion, reducing the overall refinement effect. This study provides insights into optimizing atomization conditions for the precise control of superalloy powders in AM.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 279-302"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and numerical study of maximum efficiency vortex finder insertion depth of a Stairmand cyclone","authors":"Shiwei Yuan ,&nbsp;Guogang Sun ,&nbsp;Liangce Xiao ,&nbsp;Jianchen Sun ,&nbsp;Zhen Qian ,&nbsp;Gang Cao","doi":"10.1016/j.partic.2024.10.004","DOIUrl":"10.1016/j.partic.2024.10.004","url":null,"abstract":"<div><div>The vortex finder is essential in cyclone separators, significantly affecting separation performance via its diameter and insertion depth. The current study shows that as the insertion depth of the vortex finder increases, the separation efficiency initially increases and then decreases, and there exists a maximum point with which the corresponding insertion depth is the maximum efficiency insertion depth (<em>S</em>_MEID). However, there are inconsistent conclusions in the existing literature regarding the maximum efficiency insertion depth and a lack of explanation for the flow field mechanism at the maximum efficiency insertion depth. This study examines the Stairmand type cyclone using 13 μm silicon micro-powder, employing numerical simulation and cold mold experiments to explore the effects of the vortex finder's insertion depth and diameter on separation performance and flow field. The results indicate that the insertion depth has minimal impact on pressure drop. The maximum efficiency insertion depth of the vortex finder decreases as the diameter decreases and is independent of this insertion depth with respect to the inlet velocity. Analysis of the flow field reveals that the maximum efficiency insertion depth is essentially the result of a \"competitive and synergistic\" mechanism between the annular space separation capability and the separation space separation capability.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 343-355"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid evaluating caking tendency of nonspherical crystals by developing a shape-based crystal bridge growth model","authors":"Mingxuan Li ,&nbsp;Mengdi Zhang ,&nbsp;Wei Zhao ,&nbsp;Leida Zhang ,&nbsp;Mingyang Chen ,&nbsp;Dandan Han ,&nbsp;Junbo Gong","doi":"10.1016/j.partic.2024.10.003","DOIUrl":"10.1016/j.partic.2024.10.003","url":null,"abstract":"<div><div>Crystal caking is a decisive factor affecting the quality of high-end fine chemicals, whereas lack of shape-to-caking understanding results in considerable waste of time, severely delaying high-end fine chemical development. On this basis, a morphology-based caking evaluation model is developed with 74% and 96% time savings compared to previous modeling and non-modeling experiments, respectively, while guaranteeing superior accuracy. The crystal morphology is expressed as a function of the aspect ratio and the particle size distribution. The quantitative relationships between these parameters and the caking tendency are deduced, firstly achieving morphology anti-caking criterion establishment. For D-allulose crystals, considering humidity, and particle size, an aspect ratio is below 3 is the standard for combating caking, which has not been reported previously. Herein, the specific effect of crystal morphology on caking behavior is quantitatively described. The knowledge obtained can be applied to rapidly and quantitatively design anti-caking storage systems for products in warehouses.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"95 ","pages":"Pages 265-278"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}