International Journal of Multiphase Flow最新文献_第3页

Maximum spreading-based method for determining the pre-rebounding sliding length of a water droplet after impact on an inclined superhydrophobic textured surface 确定水滴撞击倾斜超疏水纹理表面后预反弹滑动长度的基于最大扩展的方法

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-10 DOI: 10.1016/j.ijmultiphaseflow.2025.105257

Danila Verkhodanov , Alexandra Piskunova , Maxim Piskunov , Ivan Vozhakov , Alexey Safonov , Sergey V. Starinskiy , Nikita Smirnov

{"title":"Maximum spreading-based method for determining the pre-rebounding sliding length of a water droplet after impact on an inclined superhydrophobic textured surface","authors":"Danila Verkhodanov , Alexandra Piskunova , Maxim Piskunov , Ivan Vozhakov , Alexey Safonov , Sergey V. Starinskiy , Nikita Smirnov","doi":"10.1016/j.ijmultiphaseflow.2025.105257","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105257","url":null,"abstract":"<div><div>Mathematical prediction of liquid droplet sliding along self-cleaning, anti-icing, anti-fouling and water-repellent coatings is critically attractive for research and engineering development. The work deals with the development of a semi-empirical method for estimating the sliding length of a 2.1-mm water droplet before its rebound along inclined (0-85°) superhydrophobic micro-textured surfaces with advancing contact angles of 162-164°. The method is based on energy conservation-based prediction of the maximum spreading diameter of an impacting (0.5-3.2 m/s) water droplet as a time moment preceding its sliding. In the viscous dissipation work equation, the time of maximum droplet spreading is proposed to be considered through the normal ratio of wetting and antiwetting pressures of micro-textured surfaces. The developed method revealed a linear relationship between the sliding length of a droplet and its maximum spreading diameter. It was demonstrated that modeling the wetting of the internal elements of micro-textures is a crucial step in predicting the characteristics of both processes. As a prerequisite for the creation of a semi-empirical method for estimating the sliding length, the difficulties of empirical modeling of this characteristic are reasonably presented and discussed. The validity of the method for predicting the maximum spreading coefficient is substantiated by emphasizing the importance of adhesion work in the physics of spreading. The results of the study demonstrate the effectiveness of using the micro-textured, rough surface with a selected periodicity, contact angle and free surface energy as a practical water-repellent coating. This surface structure has been demonstrated to effectively repel water in real-world applications.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105257"},"PeriodicalIF":3.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825680","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

One-to-one alternating droplet generation in a microfluidic double T-junction at low interfacial tension 低界面张力下微流体双t结中一对一交变液滴的产生

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105247

Huanhuan Jia , Yan Liu , Yuqing Zhao , Xiaoda Wang , Xiaoxi Yu

{"title":"One-to-one alternating droplet generation in a microfluidic double T-junction at low interfacial tension","authors":"Huanhuan Jia , Yan Liu , Yuqing Zhao , Xiaoda Wang , Xiaoxi Yu","doi":"10.1016/j.ijmultiphaseflow.2025.105247","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105247","url":null,"abstract":"<div><div>The one-to-one alternating droplet generation (OOAG) in a double microfluidic T-junction is a newly-developing method to construct droplet reactors. However, little attention was paid to its precise control, especially at low interfacial tension. This work filled in the gap through the experimental and theoretical exploration. Four fluid systems were adopted to make the research conclusions more general. The mechanism of flow-patten transition was analyzed to establish a predictive model describing the operation window of OOAG. Interface dynamics analysis suggested that independent of the proportion of continuous-phase, the droplet formation was suppressed and accelerated by the opposite dispersed phase at the earlier and later stages, respectively. Additionally, the opposite dispersed phase delayed the droplet breakup at low proportion of continuous phase through the interface deformation. A predictive model for droplet size was established by considering the mutual effect of the two dispersed phases and the fluid properties.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105247"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820441","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

Visualized experimental study of steam condensation on a vertical tube with non-condensable gas (air) under free convection 自由对流条件下不凝性气体（空气）在垂直管内冷凝蒸汽的可视化实验研究

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105248

Zengqiao Chen , Naihua Wang , Keyuan Zhang

{"title":"Visualized experimental study of steam condensation on a vertical tube with non-condensable gas (air) under free convection","authors":"Zengqiao Chen , Naihua Wang , Keyuan Zhang","doi":"10.1016/j.ijmultiphaseflow.2025.105248","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105248","url":null,"abstract":"<div><div>The presence of non-condensable gas (NCG) significantly reduces the condensation heat transfer coefficient (HTC) during steam condensation. However, the impact of condensate modes and dynamic behavior on NCG during steam condensation remains poorly understood. Moreover, prior research on the effect of wall subcooling on HTC has conflicting results. This study addresses these gaps through a visualized experimental investigation of steam condensation on the outer surface of a vertical tube under free convection with NCG (air). The experiment covered a range of parameters, including air mass fraction (0.08–0.4), wall subcooling (4–23 K), and system pressure (0.1–0.4 MPa). Visualization revealed three distinct condensate modes: film, droplet-film, and droplet-film-stream. At an air mass fraction of 0.08, a steam pressure of 0.15 MPa, and a subcooling of 10.0 K, observations on the tube wall surface revealed four dynamic features: droplet merging, droplet shedding and flushing, droplet dynamic growth, and film flow. At a steam pressure of 0.1 MPa and a subcooling of 8.0 K, a 1 % increase in air mass fraction resulted in an average decrease of 136.9 W/(m² K) in the condensation HTC below 30 % air mass fraction, and 42.9 W/(m² K) above 30 %. In particular, the HTC exhibited an increasing trend followed by a decrease with increasing wall subcooling. Based on the experimental data, an experimental correlation for the average HTC was developed as a function of air mass fraction, wall subcooling, and system pressure. The correlation accurately predicted 90 % of the experimental data within a 10 % uncertainty range.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105248"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825681","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

Experimental investigation of surfactant influence on the viscoelastic coaxial electrospray 表面活性剂对粘弹性同轴电喷雾影响的实验研究

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105251

Narges Ahmadi Arjanaki, Ahmad Reza Pishevar

{"title":"Experimental investigation of surfactant influence on the viscoelastic coaxial electrospray","authors":"Narges Ahmadi Arjanaki, Ahmad Reza Pishevar","doi":"10.1016/j.ijmultiphaseflow.2025.105251","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105251","url":null,"abstract":"<div><div>This study investigates the formation of a core-shell cone jet for encapsulating sunflower oil within a viscoelastic alginate solution via coaxial electrospray, with particular emphasis on the impact of surface tension by surfactant addition. Alginate, a naturally occurring linear polysaccharide, is widely used as an encapsulant due to its low cost, ease of use, and biocompatibility. High-speed imaging was employed to capture various electrohydrodynamic (EHD) modes by adjusting the applied electric potential between the coaxial nozzle and the ground electrode. The influence of operating parameters and surfactant addition on the formation of cone jet profiles was systematically analyzed. The results demonstrate that surfactant addition expanded the stable cone jet region by 132.8 % (2.33 times) on the operating maps, enabling the formation of a stable cone jet even at low Weber numbers. Surfactants enhance the miscibility between the core and shell fluids, and induce a corrugated interface, leading to an increase in the meniscus jet diameter. However, the stability of the jet at lower Weber numbers facilitated the creation of smaller particles. As the Weber number increased, the cone angle initially decreased and then increased, which is attributed to the changing viscoelastic behavior of the alginate solution under varying shear rates. Additionally, the use of surfactants reduced the cone angle of both the outer and inner fluids due to a decrease in surface tension forces.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105251"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816861","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

Real-time automatic flow regime classification and mapping for vertical pipes using dynamic pressure signals 基于动态压力信号的垂直管道实时自动流态分类与制图

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105252

Umair Khan , William Pao , Karl Ezra Pilario , Nabihah Sallih , Muhammad Sohail , Huzaifa Azam

{"title":"Real-time automatic flow regime classification and mapping for vertical pipes using dynamic pressure signals","authors":"Umair Khan , William Pao , Karl Ezra Pilario , Nabihah Sallih , Muhammad Sohail , Huzaifa Azam","doi":"10.1016/j.ijmultiphaseflow.2025.105252","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105252","url":null,"abstract":"<div><div>Accurate flow regime identification is essential for modeling two-phase flow systems, but the literature on real-time applications in vertical pipes is scarce. This work aims to develop a real-time, automated, data-driven flow regime classifier for vertical pipes using dynamic pressure signals. These signals were collected using a numerical model to represent three distinct flow regimes—slug, churn, and annular—in a 3-inch vertical pipe. Features were then extracted from these signals using Discrete Wavelet Transform (DWT). To optimize classification performance, twelve dimensionality reduction techniques were evaluated, followed by the application of an AutoML framework to identify the most effective machine learning classifier among K-Nearest Neighbors (KNN), Artificial Neural Networks, Support Vector Machines (SVM), Gradient Boosting, Random Forest, and Logistic Regression, with hyperparameter tuning incorporated. Kernel Fisher Discriminant Analysis (KFDA) demonstrated the best clustering performance, while KNN emerged as the top classifier with 90.2% accuracy and excellent repeatability. Leveraging DWT, KFDA, and KNN, a virtual flow regime map was constructed, enabling real-time flow regime identification with a moving window of pressure signals. Verification of the model using a 50.8 mm (2-inch) diameter pipe at different locations confirmed its robustness and scalability. In the final stage, a unified flow regime map was developed for both horizontal and vertical pipes, achieving 100% training and 92.5% testing accuracy using DWT, KFDA, and ANN. The proposed workflow represents a significant step forward in automating flow regime identification, enabling its application to opaque pipes fitted with pressure sensors for flow assurance and monitoring in process industries.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105252"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823473","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

New regimes and their spraying characteristics of electrohydrodynamic atomization 电流体动力雾化新体制及其雾化特性

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105250

Yin Guan , Yanxiu Sha , Bin He , Jingze Zheng , Yihang Lei , Yang Liu , Wuxing Lai , YongAn Huang

{"title":"New regimes and their spraying characteristics of electrohydrodynamic atomization","authors":"Yin Guan , Yanxiu Sha , Bin He , Jingze Zheng , Yihang Lei , Yang Liu , Wuxing Lai , YongAn Huang","doi":"10.1016/j.ijmultiphaseflow.2025.105250","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105250","url":null,"abstract":"<div><div>Electrohydrodynamic (EHD) atomization is a highly useful regime of EHD spraying, which has been applied to the production of three-dimensional ultra-thin membrane structures and also the removal of high heat flux called electrospray cooling. However, the rapidly changing liquid atomization behavior under the impact of a high electrostatic potential is so complicated that many aspects of the atomization morphology are not completely comprehended. In this work, we conducted an experimental study on EHD atomization under three key operating parameters including applied voltage, flow rate, and nozzle height, where nozzle height is a variable that was barely investigated in previous EHD spraying work. Seven distinct spraying regimes, namely Spindle, Pulsating Jet, Rotating Atomization, Pulsating Atomization, Stable Atomization, Tilted Atomization, and Oscillating Jet are observed, where Rotating Atomization and Pulsating Atomization are two newly discovered regimes that have not been discussed before. We use the electric Bond number and dimensionless flow rate to analyze and explain the variations of spraying profile and regime, Taylor cone profile, liquid jet breakup length, liquid jet rotating and pulsating frequency, liquid jet atomization angle and atomization area of the atomization process. Especially, the characteristics of the two newly discovered atomization regimes are comprehensively examined and compared with those of the Stable Atomization regime, which provide some new insights into the complex and variable EHD atomization phenomena.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105250"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839432","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

Multi-physical field cross-scale simulation of brine freezing process in microchannel fluid flow considering suspended ice crystals 考虑悬浮冰晶的微通道流体中盐水冻结过程的多物理场跨尺度模拟

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-08 DOI: 10.1016/j.ijmultiphaseflow.2025.105254

Ji Zhang, Jing Yuan, Han Yuan

{"title":"Multi-physical field cross-scale simulation of brine freezing process in microchannel fluid flow considering suspended ice crystals","authors":"Ji Zhang, Jing Yuan, Han Yuan","doi":"10.1016/j.ijmultiphaseflow.2025.105254","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105254","url":null,"abstract":"<div><div>Freeze method using microchannel systems offers high separation efficiency but faces challenges in controlling ice blockage caused by suspended crystals and wall dendrite growth. This study develops a dynamic phase-change model integrating the Phase Field Method (PFM) and Lattice Boltzmann Method (LBM) to investigate crystallization in brine microchannels under flow conditions. A novel multiscale computational strategy is proposed: phase and concentration fields are resolved at the mesoscale near solid-liquid interfaces, while macroscopic temperature fields are derived from their averaged values, significantly reducing grid coupling iterations and enhancing computational efficiency. Experiments using a cryo-crystallization system validate the model, demonstrating excellent agreement in ice morphology, solute distribution, and blockage dynamics. Results reveal that suspended ice crystals accelerate microchannel blockage by 2.5-fold compared to scenarios without them, driven by synergistic interactions between suspended crystals and wall dendrites. The PFM-LBM framework provides critical insights into phase transitions, solute migration, and flow-thermal coupling, offering theoretical guidance for optimizing microchannel-based freeze desalination systems and addressing ice-related challenges in broader cryogenic applications.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"189 ","pages":"Article 105254"},"PeriodicalIF":3.6,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850694","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

Investigation into the deformation process of water droplets bag breakup in airflow with elevated temperatures 高温气流中水滴破袋变形过程的研究

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-07 DOI: 10.1016/j.ijmultiphaseflow.2025.105232

Ke Zheng , Yufei Zhu , Zhiwen Gan

{"title":"Investigation into the deformation process of water droplets bag breakup in airflow with elevated temperatures","authors":"Ke Zheng , Yufei Zhu , Zhiwen Gan","doi":"10.1016/j.ijmultiphaseflow.2025.105232","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105232","url":null,"abstract":"<div><div>Experimental and theoretical studies of droplet deformation under airflow-droplet temperature differentials remain scarce. This investigation examines the deformation process of water droplet bag breakup at five different temperatures (278 K, 303 K, 323 K, 348 K, and 368 K) in the airflow temperature range from 300 K to 493 K. Results demonstrate that both droplet and airflow temperatures significantly influence deformation dynamics. The effect of heat exchange between the airflow and droplet on the droplet deformation process arises from the combined effect of convective heat transfer and evaporation. It is found that the results of existing empirical and theoretical models for droplet deformation, such as the DDB (Drop Deformation Breakup) model, do not agree well with experimental data in this investigation due to unaccounted heat exchange effects. Based on the DDB model, an improved model considering windward-side heat transfer and evaporation is proposed, which significantly reduces the prediction errors of the droplet deformation diameter with time. Energy analysis further quantifies the contributions of aerodynamic forces and heat exchange to droplet energy evolution during deformation, validating the droplet deformation mechanism with heat exchange. In this investigation, the timescale of droplet deformation is sufficiently short to render heat exchange effects on droplet average temperature variations and evaporation-induced mass loss negligible. Both theoretical and experimental results confirm that heat exchange primarily modulates droplet surface energy, thereby influencing deformation dynamics.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"188 ","pages":"Article 105232"},"PeriodicalIF":3.6,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785203","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

50 Years of International Journal of Multiphase Flow: Experimental methods for dispersed multiphase flows 国际多相流学报50年：分散多相流的实验方法

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105239

Laura Villafañe , Alberto Aliseda , Steven Ceccio , Paolo Di Marco , Nathanaël Machicoane , Theodore J. Heindel

引用次数: 0

On grid-independency of CFD-DEM simulations of cluster-induced turbulence 团簇湍流CFD-DEM模拟的网格独立性研究

IF 3.6 2区工程技术

International Journal of Multiphase Flow Pub Date : 2025-04-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105223

Behrad Esgandari, Simon Schneiderbauer

{"title":"On grid-independency of CFD-DEM simulations of cluster-induced turbulence","authors":"Behrad Esgandari, Simon Schneiderbauer","doi":"10.1016/j.ijmultiphaseflow.2025.105223","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105223","url":null,"abstract":"<div><div>We present a comparative study on the influence of three different particle (data) mapping methods on various one-point and two-point cluster-induced turbulence (CIT) statistics in an unbounded fluidization system. These methods include the particle centroid method (PCM), the divided particle volume method (DPVM), and a newly proposed implementation of Gaussian kernel method referred to as GaussFace method. In PCM method, the entire particle data is allocated to the cell, in which the particle centroid is located. However, in DPVM, the particle data is subdivided into smaller volumes using a satellite point method, allowing the distribution of particle properties among the cells associated with the satellite points. We performed simulations of dilute and dense systems at grid sizes between 2.22<span><math><mrow><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub><mo>−</mo><mn>8</mn><mo>.</mo><mn>88</mn><msub><mrow><mi>d</mi></mrow><mrow><mi>p</mi></mrow></msub></mrow></math></span> and two smoothing characteristic sizes. Our results reveal that solely using GaussFace method, which is based on distributing particle data to surrounding cells employing a Gaussian kernel, leads to a smoother particle field compared to the PCM and DPVM. Furthermore, we find that grid-independent results can only be obtained by GaussFace method together with subsequent smoothing. We also observe that the grid-independence criterion identified for the dilute system is also valid for the dense system. In addition, comparing two different methods of separating the spatially correlated and uncorrelated particle velocity components reveals that the commonly adopted fixed filter approach grossly underestimates the granular temperature in the dilute regions. The findings of our study can serve as a reference for obtaining high-resolution CFD-DEM results, which, in turn, can be used to develop coarse-grid models.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"188 ","pages":"Article 105223"},"PeriodicalIF":3.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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