International Journal of Multiphase Flow最新文献

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Computational modeling of fluid motion and mass transfer in a rocking bioreactor with application to cultivated meat production 摇摆生物反应器流体运动和传质的计算模型及其在养殖肉制品生产中的应用
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105375
Minki Kim , Daniel M. Harris , Radu Cimpeanu
{"title":"Computational modeling of fluid motion and mass transfer in a rocking bioreactor with application to cultivated meat production","authors":"Minki Kim ,&nbsp;Daniel M. Harris ,&nbsp;Radu Cimpeanu","doi":"10.1016/j.ijmultiphaseflow.2025.105375","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105375","url":null,"abstract":"<div><div>Rocking or wave-mixed bioreactors have emerged as a promising innovation in the production of cultivated meat due to their disposable nature, low operating costs, and scalability. However, despite these advantages, the performance of rocking bioreactors is not well characterized in view of their relatively short history in the market and the wide range of geometrical and operating parameters. In the present study we develop a rigorous computational framework for this multiphase, multi-physics system to quantitatively evaluate mixing, oxygen transfer, and shear stress within a rectangular rocking bioreactor under various operating conditions. This framework is implemented using the Basilisk open-source platform. We use a second-order finite volume Navier–Stokes solver and a volume-of-fluid interface reconstruction scheme to accurately resolve the highly nonlinear fluid motion. By solving the advection–diffusion equation for a multi-fluid system, we examine mixing time and the oxygen mass transfer coefficient (<span><math><mrow><msub><mrow><mi>k</mi></mrow><mrow><mi>L</mi></mrow></msub><mi>a</mi></mrow></math></span>) for different operating conditions, both of which show a strong relationship with steady streaming underlying the instantaneous laminar flow. We further highlight two critical hydrodynamic phenomena that significantly influence bioreactor performance. Firstly, we investigate the transitional regime from laminar to turbulent flow. Moreover, we identify specific operating conditions that trigger resonance within the bioreactor, enhancing mixing and oxygen transfer. We finally discuss the potential effects of shear stress and energy dissipation rate on cell survival. Our findings are expected to provide valuable insights and guidelines for designing optimized bioreactors to support the next-generation cultivated meat industry pipelines.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105375"},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852705","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 modeling of CO2 capture in a spray tower with aqueous ammonia and full-cone atomizers 含水氨和全锥雾化器喷雾塔中CO2捕获的数值模拟
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105405
Miloslav Belka, Ondrej Cejpek, Frantisek Lizal, Milan Maly, Jan Jedelsky
{"title":"Numerical modeling of CO2 capture in a spray tower with aqueous ammonia and full-cone atomizers","authors":"Miloslav Belka,&nbsp;Ondrej Cejpek,&nbsp;Frantisek Lizal,&nbsp;Milan Maly,&nbsp;Jan Jedelsky","doi":"10.1016/j.ijmultiphaseflow.2025.105405","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105405","url":null,"abstract":"<div><div>Chemical absorption in a spray tower using aqueous ammonia is a promising method for CO<sub>2</sub> post-combustion capture, a key step in carbon capture and storage (CCS) approaches. However, this process is highly sensitive to atomization and subsequent droplet hydrodynamics. To investigate the impact of spray parameters on column performance, we conducted MATLAB calculations and CFD simulations focusing on droplet hydrodynamics, evaporation, and CO<sub>2</sub> absorption. Evaporation was calculated using an infinite conductivity model while absorption was solved using an empirical model. The effect of droplet diameter on droplet entrainment and wall deposition was revealed via the concept of droplet terminal settling velocity and droplet stopping distance. The capture efficiency for optimal parameters determined by MATLAB calculations was 67 %, which was further enhanced to 74 % by adjusting the spray angle or reducing the gas velocity. CFD simulations of the spray column underlined the necessity of two-way coupled simulations as the spray significantly affects the gas flow and causes, among other things, back-mixing behavior. Droplet stopping distances were longer than those in MATLAB calculations, with discrepancies increasing alongside the liquid-to-gas ratio. The evaporative effect was minimal, as the gas quickly became saturated.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105405"},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144830385","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
A front-tracking study of retinal detachment treatment by magnetic drop targeting 磁滴靶向治疗视网膜脱离的前沿跟踪研究
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105410
Mohammad Amin Amini , Gretar Tryggvason , Ehsan Amani
{"title":"A front-tracking study of retinal detachment treatment by magnetic drop targeting","authors":"Mohammad Amin Amini ,&nbsp;Gretar Tryggvason ,&nbsp;Ehsan Amani","doi":"10.1016/j.ijmultiphaseflow.2025.105410","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105410","url":null,"abstract":"<div><div>We investigate the Ferrofluid Drop Targeting (FDT) for the treatment of the Retinal Detachment (RD), considering, for the first time, the real 3D geometry of an eye and magnets configurations as well as the viscoelastic rheology of the medium, i.e., the Vitreous Humor (VH). A Front-Tracking Method (FTM) is extended to handle a general 3D unstructured Eulerian grid and strong wall effects. The challenges include the accuracy and robustness of the solver when the drop spreads on the retina under the effect of a magnetic field, which necessitates the design of a multi-region Eulerian grid and defining a threshold distance between the front and wall, along with the choice of an effective front smoothing and volume correction FTM sub-algorithms near the walls. After model validations, the effect of different design parameters on important objectives, such as the travel time, settling time, retinal coverage area, and impact compressive stress, are studied. The results reveal that, in addition to the magnetic Bond number, the ratio of the drop-to-VH magnetic permeabilities plays a key role in the terminal shape parameters, like the retinal coverage. Additionally, simultaneously increasing these two parameters, significantly increase the total FDT force, coverage area, and stress concentration, while decreasing the drop-VH surface tension can mitigate the stress concentration on the retina.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105410"},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828143","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
Liquid-in-liquid compound drop impact on viscous liquid films 液中液复合液滴对粘性液膜的影响
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105376
Bin Liao , Weimin Ji , Pengfei Zhang , Yang Bu , Qilin Zhang , Shanqun Chen
{"title":"Liquid-in-liquid compound drop impact on viscous liquid films","authors":"Bin Liao ,&nbsp;Weimin Ji ,&nbsp;Pengfei Zhang ,&nbsp;Yang Bu ,&nbsp;Qilin Zhang ,&nbsp;Shanqun Chen","doi":"10.1016/j.ijmultiphaseflow.2025.105376","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105376","url":null,"abstract":"<div><div>In this study, we conduct a systemaic numerical investigation under moderate Weber number, high Ohnesorge number, axisymmetric, and equal-density compound drops with thin underlying films into the rebound behavior of a liquid-in-liquid compound drop impact on viscous liquid films. Through energy budget analysis, we elucidate the underlying mechanisms governing the transition from bouncing to non-bouncing (floating) behavior of the compound drop. We also calibrate the existing phenomenological model and reproduce the observed trends of the liquid-in-liquid compound drop impact on viscous liquid films. Furthermore, our findings indicate that the energy transferred from the impacting compound drop to the liquid film remains negligibly affected by variations in volume ratio and viscosity ratio between the inner and outer droplets. Finally, we demonstrate that increasing the volume ratio and decreasing the viscosity ratio suppress the motion of the inner droplet when these parameters do not reach specific thresholds.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105376"},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780751","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
Study on the cavitation erosion of a single bubble collapse near a rigid wall based on chronoamperometry 基于计时电流法的刚性壁面单泡崩落空化侵蚀研究
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-05 DOI: 10.1016/j.ijmultiphaseflow.2025.105394
Qingmiao Ding, Yunlong Shan, Yanyu Cui, Jiakui Yu, Futai Guo
{"title":"Study on the cavitation erosion of a single bubble collapse near a rigid wall based on chronoamperometry","authors":"Qingmiao Ding,&nbsp;Yunlong Shan,&nbsp;Yanyu Cui,&nbsp;Jiakui Yu,&nbsp;Futai Guo","doi":"10.1016/j.ijmultiphaseflow.2025.105394","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105394","url":null,"abstract":"<div><div>Cavitation is indeed a significant phenomenon in fluid dynamics, involving the formation, growth, and eventual collapse of vapor-filled bubbles in a liquid. This process can lead to various effects, particularly when bubbles collapse near a rigid wall, resulting in cavitation erosion. In this study, the dynamic behaviors of a single cavitation bubble collapsing near a rigid wall, focusing on varying dimensionless bubble-wall stand-off distances (<em>γ</em>) and the effects of dimensionless eccentricity (<em>ε</em>) were investigated. This study explored the pulsating evolution of a single cavitation bubble through high-speed photography, utilizing chronoamperometry combined with morphological analysis to characterize cavitation erosion damage. The results showed that: (1) At the dimensionless distance <em>γ</em> of 0.1 between the cavitation bubble and the wall, the peak current reached its maximum. This indicated that cavitation erosion was the most severe at this proximity. Both the high-velocity micro-jet generated during the first collapse of the bubble and the crushing flow generated during the asymmetric collapse of the ring vortex in the second collapse of the bubble contribute to cavitation erosion, with their damage effects being comparable. (2) When the dimensionless distance <em>γ</em> increased to 1.3, serious cavitation erosion was observed again, primarily caused by the collapse of the ring vortex. In this scenario, the contribution of micro-jets was minimal, indicating a shift in the erosion mechanism as the bubble was further from the wall. (3) At a dimensionless distance of 0.1, the material surface showed a centrally depressed area characterized by dense pits arranged in a ring-like distribution. This reflected the intense local impacts from the bubble collapse. At a distance of 1.3, the damage morphology was different, featuring only a ring-like distribution of dense pits with a flatter center. This change suggested that the collapse dynamics and resulting jet interactions vary significantly with distance. The morphological observations aligned with the cavitation mechanisms identified through chronoamperometry, reinforcing the relationship between bubble dynamics, erosion intensity, and the resultant material damage.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105394"},"PeriodicalIF":3.8,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810200","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
Interaction between droplet and airflow during aerodynamic breakup of droplet 液滴气动破碎过程中液滴与气流的相互作用
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-08-04 DOI: 10.1016/j.ijmultiphaseflow.2025.105377
Zhikun Xu , Tianyou Wang , Zhizhao Che
{"title":"Interaction between droplet and airflow during aerodynamic breakup of droplet","authors":"Zhikun Xu ,&nbsp;Tianyou Wang ,&nbsp;Zhizhao Che","doi":"10.1016/j.ijmultiphaseflow.2025.105377","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105377","url":null,"abstract":"<div><div>The process of droplet deformation and fragmentation into finer fragments in an airflow involves complex aerodynamic interaction between the droplet and the surrounding air. Previous experimental studies on the aerodynamic breakup of droplets mostly measured the flow field and captured the droplet morphology separately, leaving the spatiotemporal correlation between droplet deformation and flow field evolution still unclear. In this study, the interaction between the droplet and the surrounding airflow is investigated by measuring the rapidly evolving droplet morphology and the flow field around the droplet simultaneously with laser-induced fluorescence and high-speed particle image velocimetry. By combining a continuous laser with a high-speed camera, the temporal resolution of flow field measurement is significantly enhanced, enabling the time-resolved, quantitative measurement of the flow field around rapidly deforming droplets. The temporal evolutions of the flow field are analyzed across different breakup modes. The results reveal that the mode transitions are featured by changes in backflow intensity, wake vortex size, and vortex evolution time. The frequency of vortex shedding in the droplet wake is analyzed, and two dominant frequencies are identified based on the initial diameter and the flattened diameter of the droplet. Finally, the flow field in the shear-stripping mode suggests that the stripping of liquid from the droplet periphery can be induced by the rapid shedding of local vortices.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105377"},"PeriodicalIF":3.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144767098","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
Retraction notice to “Three-Dimensional Display of Foam-Driven Oil Displacement in Porous Materials” [International Journal of Multiphase Flow 188 (2025) 105221] 关于“多孔材料中泡沫驱动驱油的三维显示”的撤回通知[国际多相流学报188 (2025)105221]
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-07-31 DOI: 10.1016/j.ijmultiphaseflow.2025.105379
Najeeb Anjum Soomro
{"title":"Retraction notice to “Three-Dimensional Display of Foam-Driven Oil Displacement in Porous Materials” [International Journal of Multiphase Flow 188 (2025) 105221]","authors":"Najeeb Anjum Soomro","doi":"10.1016/j.ijmultiphaseflow.2025.105379","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105379","url":null,"abstract":"","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"192 ","pages":"Article 105379"},"PeriodicalIF":3.8,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781692","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
Characterization of the critical lift-off of a single flat-plate microchip particle in straight rectangular microchannel flows 在直矩形微通道流动中单个平板微芯片微粒临界升力的表征
IF 3.8 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-07-25 DOI: 10.1016/j.ijmultiphaseflow.2025.105355
Raymond Yeung , Cynthia Sainz , Jason Mandala , Philip Brisk , William H. Grover , Victor G.J. Rodgers
{"title":"Characterization of the critical lift-off of a single flat-plate microchip particle in straight rectangular microchannel flows","authors":"Raymond Yeung ,&nbsp;Cynthia Sainz ,&nbsp;Jason Mandala ,&nbsp;Philip Brisk ,&nbsp;William H. Grover ,&nbsp;Victor G.J. Rodgers","doi":"10.1016/j.ijmultiphaseflow.2025.105355","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105355","url":null,"abstract":"<div><div>Hydrodynamic sorting of microchip particles in microchannels is essential in microfluidic systems used for applications requiring particle-based multiplexing. Understanding the forces acting on the particle, as well as the dependencies of the forces on channel and fluid flow parameters, allows for prediction of the flow conditions needed to initiate particle movement, or lift-off. This study presents the experimental characterization of the lift-off of a single, flat-plate, non-neutrally buoyant microchip particle initially sedimented near the inlet of straight, rectangular microfluidic channels of different channel sizes and solvents at moderate Archimedes number of 191 to 2820. The critical shear Reynolds number, corresponding to the minimum required for lift-off, was found to increase with larger Archimedes number and the relationship was found to exhibit particle-channel size dependency. The observed critical lift-off for the flat-plate particle was lower than that predicted using a previous generalized lift-off model based on modified particle Reynolds and Archimedes numbers which may be explained by entrance effects and fluid film lubrication pressure under the particle. Numerical evaluations of the hydrodynamic forces acting on the particle revealed that electrostatic forces are significant. A remodified Archimedes number, based on the channel width, particle diameter, and solvent relative permittivity, is introduced as a correction to the generalized lift-off model to account for hydrodynamics and electrostatics affecting the lift-off of a flat-plate particle. This model is in good agreement with the generalized particle lift-off model and allows for prediction of flat-plate particle lift-off in microfluidic channels for a moderate range of Archimedes numbers.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105355"},"PeriodicalIF":3.8,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738277","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
Modal analysis reveals imprint of snowflake shape on wake flow structures 模态分析揭示了雪花形状对尾流结构的影响
IF 3.6 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-07-23 DOI: 10.1016/j.ijmultiphaseflow.2025.105365
Giorgia Tagliavini , Markus Holzner , Pascal Corso
{"title":"Modal analysis reveals imprint of snowflake shape on wake flow structures","authors":"Giorgia Tagliavini ,&nbsp;Markus Holzner ,&nbsp;Pascal Corso","doi":"10.1016/j.ijmultiphaseflow.2025.105365","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105365","url":null,"abstract":"<div><div>This study investigates the complex interplay of wake flow dynamics, particle shape, and falling behavior of snowflakes through advanced flow analysis. We employ Proper Orthogonal Decomposition and Dynamic Mode Decomposition to analyze the wake flow patterns of three distinct snowflake geometries at a Reynolds number of 1500: a dendrite crystal, a columnar crystal, and a rosette-like particle. Proper Orthogonal Decomposition reveals that spatial resolution significantly impacts the capture of flow structures, particularly for particles with more intricate wake flow structure, corresponding to unstable falling motion. Dynamic Mode Decomposition demonstrates high sensitivity to temporal resolution, with data of the forces exerted on the snowflake incorporated in the matrix prior to the decomposition mitigating information loss at lower sampling rates. We establish a linear relationship between snowflake shape porosity and minimum and maximum Dynamic Mode Decomposition eigenfrequencies, absolute decay or growth rates, and the wavenumber of the most energetic mode, linking particle geometry to wake flow characteristics. Higher porosity corresponds to more stable, small-scale flow structures and steady falling motion, while lower porosity promotes larger, unstable structures and falling trajectories with random particle orientations. These findings reveal the interdependence of snowflake geometry, wake flow dynamics, and falling behavior and highlight the importance of considering both spatial and temporal resolutions when dealing with modal analysis. This research contributes to improved predictions of snowflake falling behavior, with potential applications in meteorology and climate science.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"193 ","pages":"Article 105365"},"PeriodicalIF":3.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713511","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 on characteristics of flow-induced acoustics in horizontal gas–liquid two-phase flow 水平气液两相流流致声特性的实验研究
IF 3.6 2区 工程技术
International Journal of Multiphase Flow Pub Date : 2025-07-23 DOI: 10.1016/j.ijmultiphaseflow.2025.105378
Nannan Zhao, Guojun Zhu, Jianjun Feng, Xingqi Luo, Jingyue Song
{"title":"Experimental investigation on characteristics of flow-induced acoustics in horizontal gas–liquid two-phase flow","authors":"Nannan Zhao,&nbsp;Guojun Zhu,&nbsp;Jianjun Feng,&nbsp;Xingqi Luo,&nbsp;Jingyue Song","doi":"10.1016/j.ijmultiphaseflow.2025.105378","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105378","url":null,"abstract":"<div><div>The dynamic behavior of bubbles and their interactions with fluid walls in bubble-laden liquid flows inevitably generate outwardly propagating sound waves, which are crucial for monitoring pipeline stability. However, the influence of flow patterns on gas–liquid two-phase flow-induced sound (GTFIS) emissions, especially under high Reynolds numbers, remains inadequately understood. In this study, GTFIS signals under high Reynolds numbers in a horizontal pipe were captured using a precision hydrophone. The results reveal that the energy of GTFIS signals is predominantly concentrated within 0–50 Hz. Among all flow patterns in conventional horizontal pipes, slug flow (SG) exhibits the highest GTFIS signal intensity. The signal intensity in SG increases linearly with gas velocity due to the combined effects of rising bubble-induced turbulence effect and slug frequency. In intermittent flow, the GTFIS signal exhibits increased non-Gaussianity and approximately follows a stable distribution. The structural complexity and multifractality of GTFIS signals are governed by bubble behavior and flow pattern transitions. Furthermore, in intermittent flow, the multifractal strength is maximized due to the enhanced intermittency of the internal flow and the inhomogeneous two-phase distribution. The parameters of the multifractal spectrum for GTFIS emerge as effective tools for flow pattern classification.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"192 ","pages":"Article 105378"},"PeriodicalIF":3.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711269","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
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