Particuology最新文献_第4页

Effects of container geometry on the packing structures of trilobed particles 容器几何形状对三叶颗粒堆积结构的影响

IF 4.3 2区材料科学

Particuology Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.partic.2026.01.011

Fuhai Yu , Dongling Cui , Ruiqiu Liu , Yun Zhang , Guangzheng Zhou

{"title":"Effects of container geometry on the packing structures of trilobed particles","authors":"Fuhai Yu , Dongling Cui , Ruiqiu Liu , Yun Zhang , Guangzheng Zhou","doi":"10.1016/j.partic.2026.01.011","DOIUrl":"10.1016/j.partic.2026.01.011","url":null,"abstract":"<div><div>The packing densification of trilobes in rectangular containers of varying aspect ratios is systematically investigated using a geometrically exact contact detection algorithm combined with the multi-sphere method. Packing structures are analyzed in terms of overall density, spatial packing density distribution, radial distribution function, and densification mechanisms. Under mechanical vibration, two preferential particle orientations are identified. At low vibration amplitudes, spatial confinement in the bottom layer restricts rearrangement of trilobes, resulting in partial vertical alignment while many particles remain parallel to the container base. At higher amplitudes, increased mobility facilitates extensive reorientation and structural reconfiguration of trilobes, allowing nearly all trilobes near the bottom aligning vertically. In rectangular containers, trilobes predominantly adopt orientations either parallel or perpendicular to the container base, forming granular beds composed of ordered clusters of distinct orientations. The crystallization process is prohibited by the joint effects of the two distinct preferential orientations and the strong interlockings between trilobed particles and a random close packing of trilobed particles is formed in the containers. Notably, the overall packing density is not determined by the degree of crystallization but by the spatial arrangements of clusters of distinct orientations which is not sensitive to the geometry of the rectangular containers; granular beds consisting of ordered clusters with relatively low nematic order parameters can achieve higher global packing densities.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"110 ","pages":"Pages 211-222"},"PeriodicalIF":4.3,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074943","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}

引用次数: 0

Plasma dynamic synthesis of hybrid carbide-reinforced aluminium matrix composites 等离子体动态合成混杂碳化物增强铝基复合材料

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-08 DOI: 10.1016/j.partic.2025.12.024

Dmitriy Nikitin , Ivan Shanenkov , Artur Nassyrbayev , Alexander Tsimmerman , Yuliya Shanenkova , Egor Kashkarov , Junzhi Li , Wei Han

{"title":"Plasma dynamic synthesis of hybrid carbide-reinforced aluminium matrix composites","authors":"Dmitriy Nikitin , Ivan Shanenkov , Artur Nassyrbayev , Alexander Tsimmerman , Yuliya Shanenkova , Egor Kashkarov , Junzhi Li , Wei Han","doi":"10.1016/j.partic.2025.12.024","DOIUrl":"10.1016/j.partic.2025.12.024","url":null,"abstract":"<div><div>The development of hybrid aluminum matrix composites (HAMCs) reinforced with superhard carbides is a crucial scientific direction, which still faces challenges related to the inhomogeneous distribution of reinforcing component and the formation of undesirable interphase compounds. This study was aimed to develop a universal in-situ approach for plasma dynamic synthesis of HAMCs with enhanced structural, mechanical, and functional properties. Dispersed powders of HAMCs reinforced with WC, SiC, and B<sub>4</sub>C were produced by high-speed spraying of a multicomponent thermal plasma jet, followed by spark plasma sintering (SPS) to fabricate bulk materials. The developed plasma processing technology provides complete alignment of the HAMCs components and form a composite structure with a polymodal particle size distribution, where the aluminum matrix is primarily presented with porous microsized particles filled in by ceramic component. These features of composite powders affect high mechanical properties of bulk sintered samples with density values of up to 99 % and microhardness values of up to 134 HV, which exceed those of known analogs and pure aluminum. A combination of high mechanical, thermal and electrical properties confirms the functionality of synthesized materials and highlights the potential of applying in-situ approach based on plasma processes for producing advanced HAMCs with improved performance characteristics.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 247-257"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973606","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}

引用次数: 0

Multi-objective optimisation of dual inlet cyclone separator using response surface methodology 基于响应面法的双入口旋风分离器多目标优化

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2025-12-10 DOI: 10.1016/j.partic.2025.12.004

Saikat Barua , Mohammad Zulafif Bin Rahim , Qingqing Liu

{"title":"Multi-objective optimisation of dual inlet cyclone separator using response surface methodology","authors":"Saikat Barua , Mohammad Zulafif Bin Rahim , Qingqing Liu","doi":"10.1016/j.partic.2025.12.004","DOIUrl":"10.1016/j.partic.2025.12.004","url":null,"abstract":"<div><div>Given the growing emphasis on sustainable industrial practices and regulatory constraints on particulate emissions, enhancing cyclone separator performance remains a critical area of research for ensuring the high-efficient solid-gas separation with minimal energy penalties. This study presents a comprehensive numerical investigation and multi-objective optimisation of a dual-inlet cyclone separator to enhance the particle collection efficiency while minimizing the pressure drop. The Eulerian-Lagrangian approach is employed using the RNG <span><math><mrow><mi>k</mi><mo>-</mo><mi>ε</mi></mrow></math></span> turbulence modelling, coupled with the Discrete Phase Model for particle tracking. Key geometric parameters, including the inlet height to width, vortex finder angle, vortex finder diameter, barrel height, cone height, and bin diameter, are systematically varied to analyse their effects on the cyclone performance. Two optimal factors are tested among the three most significant factors at once to evaluate their combined effects on the collection efficiency and the pressure drop. Results indicate that the optimised cyclone design improves average collection efficiency by 11.5 % across particle sizes, reduces the Euler number by 50.96 %, and lowers the particle cut-off diameter by 16.15 %, while maintaining a balanced trade-off with the pressure drop. The prediction errors for the pressure drop and the collection efficiency are within acceptable limits at 11 % and 3.5 %, respectively. The improved geometry strengthens the tangential flow and moderates the peak axial velocity, resulting in a more effective centrifugal separation for fine particles.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 45-58"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789191","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}

引用次数: 0

Key factors in liquid-route synthesis of photovoltaic front-side silver micro-powder: Particle growth modeling coupled with CFD 液路合成光伏前端银微粉的关键因素：颗粒生长模拟与CFD耦合

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-02 DOI: 10.1016/j.partic.2025.12.008

Zepeng Zhu , Qian Zhang , Yiyang Zhang , Yaqin Liao , Qingqing Qiu , Zhong Chen , Shuiqing Li

{"title":"Key factors in liquid-route synthesis of photovoltaic front-side silver micro-powder: Particle growth modeling coupled with CFD","authors":"Zepeng Zhu , Qian Zhang , Yiyang Zhang , Yaqin Liao , Qingqing Qiu , Zhong Chen , Shuiqing Li","doi":"10.1016/j.partic.2025.12.008","DOIUrl":"10.1016/j.partic.2025.12.008","url":null,"abstract":"<div><div>The performance of photovoltaic cell grids critically depends on the quality of front silver paste, which is significantly influenced by the particle size of the silver powder. Liquid-route continuous synthesis is a highly promising option for the silver micro-powder production. To identify the key factors in synthesis processes impacting on the particle size of the final product, a comprehensive understanding of the continuous liquid-route reduction synthesis mechanisms is required. This study presents a coupled CFD-PBM framework of silver micro-powder synthesis that incorporates flow dynamics, chemical reactions, nucleation, and surface growth processes. The results indicate that the initial reduction rate influences the nucleation of silver powder formation, thereby determining the number of final products. The reduction rate of following stage affects the surface growth, ultimately determining the average size of the products. In a synthesis system with a fixed total reducible silver content, a high initial reduction rate tends to a larger number of smaller silver powder particles produced. Particularly in the ascorbic acid-silver nitrate reduction system, the pH value is a critical factor controlling the distribution of reaction rates. The findings reveal how the reduction rate regulates the final particle size through its influence on nucleation and growth processes, providing insights into controlling powder particle size characteristics by manipulating reaction rates within the continuous synthesis system.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 270-281"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973608","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}

引用次数: 0

A key antagonistic effect in alkaline pretreatment of clay-type lithium ores and its targeted control for enhanced lithium enrichment 粘土型锂矿碱预处理的拮抗作用及其对锂富集的调控作用

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-02 DOI: 10.1016/j.partic.2025.12.013

Ziliang Liu, Fuzhong Wu, Xiaodong Lv, Xinyi Dai

{"title":"A key antagonistic effect in alkaline pretreatment of clay-type lithium ores and its targeted control for enhanced lithium enrichment","authors":"Ziliang Liu, Fuzhong Wu, Xiaodong Lv, Xinyi Dai","doi":"10.1016/j.partic.2025.12.013","DOIUrl":"10.1016/j.partic.2025.12.013","url":null,"abstract":"<div><div>Clay-type lithium ores represent a vast, underexploited resource critical for future lithium supply, but their complex mineralogy hinders efficient processing. While alkaline pretreatment is a promising enrichment strategy, its optimization is hampered by elusive regulatory mechanisms. Here, we report a critical non-monotonic response where excessive pretreatment intensity paradoxically suppresses lithium recovery. We identify and verify that this response is governed by a key antagonistic mechanism, termed the Alkali Residue Effect (ARE), where residual alkaline species cause both physical dilution and chemical neutralization. Through response surface methodology (RSM) targeting the mitigation of ARE, we established an optimized processing window that achieves a 4.35-fold lithium enrichment (Li<sub>2</sub>O from 0.17 to 0.74 wt%). Microscopic analyses (SEM-EDS, XRD, XPS) confirm the optimized process selectively etches amorphous gangue, enhancing the reactivity of the Li-bearing mineral (cookeite). A techno-economic analysis projects a favorable operating cost of ∼US$81/ton. This study provides a new theoretical framework (ARE) for optimizing complex hydrometallurgical processes by balancing targeted reactions against unintended side effects.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 180-191"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922232","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}

引用次数: 0

Modelling of dry manufacturing of LFP cathode filaments with twin-screw extruder using the Discrete Element Method 用离散元法对双螺杆挤出LFP阴极灯丝干式加工进行建模

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.partic.2025.11.020

Kaize Shi , Ali Hassanpour , Meisam Babaie , Masoud Jabbari

{"title":"Modelling of dry manufacturing of LFP cathode filaments with twin-screw extruder using the Discrete Element Method","authors":"Kaize Shi , Ali Hassanpour , Meisam Babaie , Masoud Jabbari","doi":"10.1016/j.partic.2025.11.020","DOIUrl":"10.1016/j.partic.2025.11.020","url":null,"abstract":"<div><div>Material extrusion is a key step in the solvent-free fabrication of lithium-ion battery (LIB) electrodes, offering reduced costs and environmental impact compared to slurry-based methods. While discrete element method (DEM) based mesoscopic models have been used to study twin-screw extrusion, the microstructural characterisation of extrudates immediately after nozzle exit remains unexplored. In this study, a series of DEM simulations were conducted to perform a sensitivity analysis of the microstructure and electrochemical performance-related parameters of extruded electrode filaments by varying the feeding rate and feeding mode, screw rotational speed, and particle cohesion. Furthermore, this work addresses the previously unexamined phenomenon of filament expansion during extrusion. By introducing the Augmented Dickey-Fuller (ADF) method, the study also provides the first analysis of the temporal dynamic stability of filament quality during the dry electrode manufacturing extrusion process. The results show that increasing the screw speed from 100 to 500 RPM reduces porosity by 10 % and limits expansion, while lower speeds improve consistency in electrode quality. A novel approach to quantifying dynamic behaviour is proposed, offering insights for optimising solvent-free electrode manufacturing.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 1-11"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750044","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}

引用次数: 0

Optimization of honeycomb anti-wear structures for water-cooled walls in circulating fluidized beds 循环流化床水冷壁蜂窝抗磨结构优化

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-02 DOI: 10.1016/j.partic.2025.12.007

Ruiqi Bai , Tuo Zhou , Tong Wang , Xinyun Wan , Xin Meng , Man Zhang , Hairui Yang

{"title":"Optimization of honeycomb anti-wear structures for water-cooled walls in circulating fluidized beds","authors":"Ruiqi Bai , Tuo Zhou , Tong Wang , Xinyun Wan , Xin Meng , Man Zhang , Hairui Yang","doi":"10.1016/j.partic.2025.12.007","DOIUrl":"10.1016/j.partic.2025.12.007","url":null,"abstract":"<div><div>Erosion of water-cooled walls is a major challenge affecting the reliability and efficiency of circulating fluidized bed (CFB) boilers. To mitigate this issue, this study employs computational particle fluid dynamics (CPFD) simulations to optimize the design of a novel honeycomb anti-wear structure. The results show that honeycomb installation slightly modifies local wall flow but has negligible influence on the overall pressure drop. When positioned in the dense phase region, the honeycomb effectively reduces wall erosion to less than 10 % of its original value at most locations through shielding against particle impingement. Increasing the installation height weakens this effect due to stronger lateral particle motion. Thicker honeycombs enhance protection, with 7 cm achieving optimal performance, while 5 cm is sufficient in the dense phase region. The findings demonstrate that an appropriately designed honeycomb structure can serve as an innovative and effective method to mitigate erosion and extend wall service life. The synergistic combination of this structural design with metallic–ceramic coatings presents a promising strategy for enhancing both durability and heat transfer efficiency in industrial CFB boilers.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 282-291"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973601","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}

引用次数: 0

In-situ measurement of size distribution and concentration in dilute particle flow with digital holographic probe 用数字全息探针原位测量稀颗粒流的粒径分布和浓度

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-03 DOI: 10.1016/j.partic.2025.12.018

Xuecheng Wu, Dian Zhu, Zhiliang Xue, Zhiming Lin, Qiwen Jin

{"title":"In-situ measurement of size distribution and concentration in dilute particle flow with digital holographic probe","authors":"Xuecheng Wu, Dian Zhu, Zhiliang Xue, Zhiming Lin, Qiwen Jin","doi":"10.1016/j.partic.2025.12.018","DOIUrl":"10.1016/j.partic.2025.12.018","url":null,"abstract":"<div><div>Gas-solid two-phase flows are common in both industrial processes and natural phenomena, and accurately detecting particle properties within these flows is crucial for process optimization and control. However, existing particle detection techniques often struggle to provide in-situ, real-time, and multi-parameter measurements in complex flow environments. To address this challenge, a new digital holographic probe, designed for compactness and 3D measurement capability, is developed in this work. The delicate structure of the probe head makes it suitable for use in pneumatically conveyed particle flows within pipes, with a measurement volume of 435.6 mm<sup>3</sup>. The measurement performance of the holographic probe has been verified on a pipeline pneumatic transport test platform under various particle size and concentration conditions. Using 3D holographic imaging, the spatial distribution of particles within the measurement volume was analyzed. Experimental results show that the relative deviation of the mass median diameter is less than 3 %, while the relative deviation of the average mass concentration is below 12 %, compared to reference results.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 127-140"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922228","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}

引用次数: 0

Synergistically enhanced high-efficiency mixing in multi-stage micro-mixers with hybrid design 混合设计的多级微型混合器中协同增强的高效混合

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI: 10.1016/j.partic.2025.12.006

Jun Dong , Jiangkun Liu , Huimin Lv , Yonggang Zhu , Chengyue Wang

{"title":"Synergistically enhanced high-efficiency mixing in multi-stage micro-mixers with hybrid design","authors":"Jun Dong , Jiangkun Liu , Huimin Lv , Yonggang Zhu , Chengyue Wang","doi":"10.1016/j.partic.2025.12.006","DOIUrl":"10.1016/j.partic.2025.12.006","url":null,"abstract":"<div><div>This study designs and analyzes two high-performance hybrid micromixers: a multi-channel type Mixer 1 and a super-efficient type Mixer 2. Mixer 1 integrates a tree-shape distributor with Split-and-Recombine (SAR) mixers, while Mixer 2 incorporates an additional tree-shape Focus mixer after the SAR mixers. Mixing performance was analyzed across a Reynolds number (Re) range of 0.5–120. The distributor, designed via entropy generation minimization, uniformly splits flow into eight outlets while preserving the inlet concentration distribution. The SAR unit significantly enhances transverse mass transport through Baker's transformation and secondary flows. Using over four SAR units yields >90 % efficiency across the entire Re range. The Focus mixer reduces fluid-layer thickness through bifurcation-merging processes and induces secondary flow; with four branching generations, its efficiency surpasses 90 % at Re > 10 and 99 % at Re > 35. In hybrid configurations with six SAR units, Mixer 1 exhibits a mixing efficiency dip to 95 % for Re = 6 across all outlets, exceeding 99 % for Re < 3 and Re > 8. Mixer 2 also shows a dip at Re = 6, but its minimum efficiency remains >97 %, validating its ultra-high-efficiency design.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 26-44"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789276","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}

引用次数: 0

Hydrodynamic conditions governing the initiation of buried particles in viscous debris flows 控制粘性碎屑流中埋藏颗粒起爆的水动力条件

IF 4.3 2区材料科学

Particuology Pub Date : 2026-02-01 Epub Date: 2026-01-08 DOI: 10.1016/j.partic.2026.01.002

Rui Luo , Xionghuan Tan , Renjie Tang , Ni An , Hongyue Sun

{"title":"Hydrodynamic conditions governing the initiation of buried particles in viscous debris flows","authors":"Rui Luo , Xionghuan Tan , Renjie Tang , Ni An , Hongyue Sun","doi":"10.1016/j.partic.2026.01.002","DOIUrl":"10.1016/j.partic.2026.01.002","url":null,"abstract":"<div><div>Debris flows, a common natural disaster, cause annual casualties and property damage downstream. In mountainous watersheds, short-duration heavy rainfall generates significant hydraulic conditions in debris flow channels. The specified conditions trigger the mobilization of loose sediment, leading to the amplification effect that can ultimately overwhelm downstream mitigation measures. This study considers the influence of the fluid properties of viscous debris flow slurries on the forces exerted on buried coarse particles, aiming to accurately reflect real-world conditions and offer theoretical support for the amplification effect. A novel relationship was established between the initiation of motion for buried coarse particles and flow conditions, thereby broadening the applicability of existing models. The reliability of the model is assessed from two perspectives: comparison with physical model experiments and comparison with numerical simulations. A sensitivity analysis on the fluid property parameters of the debris flow slurry revealed that slurry density has the greatest impact on the cross-sectional initiation velocity for particle initiation, followed by fluid yield stress, fluid consistency index, and fluid behavior index, with the latter having the least influence.</div></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":"109 ","pages":"Pages 238-246"},"PeriodicalIF":4.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973605","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}

引用次数: 0