International Journal of Multiphase Flow最新文献

{"title":"Elucidation of pressure wave attenuation due to cross-sectional area change in bubbly flow","authors":"Kento Watanabe ,&nbsp;Tetsuya Kanagawa ,&nbsp;Takahiro Ayukai","doi":"10.1016/j.ijmultiphaseflow.2025.105138","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105138","url":null,"abstract":"<div><div>Pressure waves in bubbly flows are attenuated by various factors such as liquid viscosity and compressibility. However, existing studies have not elucidated the attenuation mechanism and lack quantitative comparisons. This study investigates the weakly nonlinear propagation of pressure waves in liquids containing spherical bubbles with varying cross-sectional areas. The Korteweg–de Vries–Burgers equation describing the wave propagation was derived using the singular perturbation method for averaged equations based on a two-fluid model. The study revealed that the attenuation is influenced by the cross-sectional area change, liquid viscosity and compressibility, and wall friction force. Second, the effects of the cross-sectional area change contribute to the amplification and attenuation of the wave amplitude when the cross-sectional area is converging and diverging, respectively. Furthermore, using the converging–diverging tube (i.e., Venturi tube) as the primary example, the study found that for large cross-sectional area change, the contribution to attenuation was the most significant, followed by liquid viscosity, compressibility, and wall friction force. This underscores the importance of the rate of change as a key parameter in cross-sectional area. This study established a new attenuation term for cross-sectional area change, which is useful in both basic and practical viewpoints.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"186 ","pages":"Article 105138"},"PeriodicalIF":3.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377492","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}

{"title":"A general double layer-averaged model for water–air two-phase pipe flows","authors":"Dongming Cheng,&nbsp;Zhixian Cao","doi":"10.1016/j.ijmultiphaseflow.2025.105136","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105136","url":null,"abstract":"<div><div>Water–air pipe flow, a common phenomenon in various engineering areas, usually demonstrates complex flow patterns in response to diverse pipe configurations and operation schemes. However, most existing numerical models for water–air pipe flows only target at one or two flow patterns, demanding a pre-estimated flow pattern and unable to resolve pattern transitions that frequently occur in water–air pipe flows. The present study aims to develop a general double layer-averaged model (DLTP) for water–air pipe flows. The present DLTP model explicitly resolves the pressure, velocity and volume fractions for both phases, vertical water–air distribution, and air configuration. As benchmarked against five distinctly patterned experiments on water–air two-phase pipe flows, the present model demonstrates encouraging performance and exhibits a higher computing accuracy as compared with existing models. Notably, flow transitions are well captured by the present model in a field-scale piston-flow case. Additionally, two experiments on single-phase water flow and airflow are computed as special cases, which demonstrates the ability of the present model to well resolve single-phase pipe flows. The present study facilitates a promising framework for the unified modelling of distinctly-patterned water–air pipe flows, in support of effective pipe design and management.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105136"},"PeriodicalIF":3.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144870","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}

{"title":"Analysis of the effect of blade inclination angle on the performance of oblique spiral cavitating nozzle","authors":"Xiaoping Chen ,&nbsp;Zhipeng He ,&nbsp;Xin Ao ,&nbsp;Lihua Zhan","doi":"10.1016/j.ijmultiphaseflow.2025.105141","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105141","url":null,"abstract":"<div><div>The oblique spiral cavitating nozzle (OSCN) has gained significant attention due to its efficient cavitation generation capability and exceptional rock-breaking performance, providing an effective solution for the efficient extraction of natural gas hydrates (NGH). As a crucial component of OSCN, the swirler enhances the nozzle's cavitation effect and improves its rock-breaking capacity. However, there is a lack of sufficient research on the influence of the swirler's blade inclination angle (<em>θ</em>) on the performance of OSCN. To determine the optimal blade inclination angle for maximizing nozzle performance, this study established a simulation model for gas-liquid two-phase flow using the Mixture multiphase flow model, RNG <em>k</em>-<em>ε</em> turbulence model, and Schnerr-Sauer cavitation model. This model was utilized to simulate the gas phase distribution, velocity distribution, and pressure distribution within the OSCN jet field. Based on these simulations, the OSCN's cavitation performance, velocity level, entrainment performance, and energy consumption are analyzed at various <em>θ</em> values. The analysis results indicated that the OSCN exhibited optimal cavitation performance at <em>θ</em> = 0°, optimal velocity level at <em>θ</em> = -5°, lowest energy consumption at <em>θ</em> = -15°, and best entrainment performance at <em>θ</em> = -25°. Additionally, it is concluded that <em>θ</em> has a smaller impact on the OSCN's cavitation performance compared to other performance factors. Subsequently, NGH erosion experiments were conducted to further optimize the <em>θ</em> of OSCN. The experimental results demonstrated that, under the same pump pressure and similar energy consumption, the OSCN with <em>θ</em> = -15° exhibited the best comprehensive drilling performance.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105141"},"PeriodicalIF":3.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143852","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}

{"title":"Study of recirculation behaviors in Taylor cones based on numerical simulations","authors":"Xiaochen Suo ,&nbsp;Kai Zhang ,&nbsp;Xiaobo Huang ,&nbsp;Dian Wang ,&nbsp;Hongyu Jia ,&nbsp;Jiahui Li ,&nbsp;Zexuan Chen ,&nbsp;Wen Shi ,&nbsp;Jian Wu ,&nbsp;Yongqing Duan ,&nbsp;Peiyi Song","doi":"10.1016/j.ijmultiphaseflow.2025.105139","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105139","url":null,"abstract":"<div><div>In this study, we focus on investigating the hydrodynamics mechanism of recirculation cells (RCs) inside the Taylor cone. Based on the flow fields quantitatively obtained in numerical simulations, the startup process of RCs is established within 1 ms of the voltage being switched on. The time evolution of the RCs indicates that their intensity, quantified as the local velocity-gradient tensor, is highly dependent on the surface charge density. This is accompanied by surface charge convection under tangential electrical stress, creating a high-pressure region at the tip and pushing the liquid to flow backward. The effects of main process parameters, including liquid flows, voltages, physical properties of liquids, and temperature of electrospray device on the RCs, are given numerically, and the local competition between the viscous shear stress and tangential electrical stress is analyzed qualitatively through nondimensional analysis. The research shows that at higher fluid electrical conductivities, the RCs quickly reach their maximum intensity as the surface charge saturates. Cone-jets with high flow rates reduce the surface charge, and high fluid viscosities lower the velocity gradient, both of which weaken the recirculation. It is also found that the recirculation can be eliminated by lowering the temperature because the fluid becomes less electrically conductive and more viscous.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105139"},"PeriodicalIF":3.6,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143854","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}

{"title":"Synchronized visualization and thermal measurements of flow boiling in high-aspect-ratio microchannel with backflow controller","authors":"Nishant Shah,&nbsp;Hemantkumar B. Mehta,&nbsp;Jyotirmay Banerjee","doi":"10.1016/j.ijmultiphaseflow.2025.105140","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105140","url":null,"abstract":"<div><div>Microchannel flow boiling technology faces significant challenges due to the limited understanding of heat transfer mechanisms during various boiling regimes and lack of transient heat transfer analysis in literature. This study introduces a backflow control mechanism positioned before the inlet of a microchannel test section to suppress flow boiling instability. The aim is to elucidate the effect of the backflow control mechanism on flow boiling heat transfer by synchronizing high-speed flow visualizations with transient temperature data. Experiments are conducted on a microchannel heat sink (MCHS) with forty-four parallel microchannels, each having a hydraulic diameter of 315 µm. The flow visualizations capture vapor belts, vapor cluster slugs, nucleate and bubbly flow boiling regimes, rewetting phenomena, and their temporal durations within the MCHS. Surface temperature measurements of the MCHS and fluid inlet and outlet temperatures are used to calculate the heat transfer coefficient. Significant alterations in hydrodynamics, including the duration of dominant flow boiling regimes and rewetting periods, are observed when the backflow controller is employed. While high-frequency transient heat transfer coefficient peaks are typical in conventional microchannel flow boiling systems, the use of a backflow controller reduces the amplitude of these peaks and prolongs their duration. The analysis demonstrates the backflow controller's effectiveness in mitigating oscillations and enhancing heat transfer.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105140"},"PeriodicalIF":3.6,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143849","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}

{"title":"Effect of groove sizes on the dynamic behavior of droplets impacting grooved cylindrical superhydrophobic surfaces","authors":"Cong Huang ,&nbsp;Lijuan Qian","doi":"10.1016/j.ijmultiphaseflow.2025.105134","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105134","url":null,"abstract":"<div><div>Droplet impact on curved surfaces decorated with macroscopic structures is a common phenomenon in many industrial applications, yet the underlying mechanisms remain elusive. This study investigates the effects of groove width ratios (<em>δ_w</em> = <em>D₀/w</em>) and groove depth ratios (<em>δ_h</em> = <em>D₀/h</em>) through numerical simulations. The wettability transition thresholds, from the Cassie state to the Wenzel state, were determined within the range of <em>δ_w</em> from 6.15 to 24.6 and <em>δ_h</em> from 6.15 to 2.46, with the Weber number (<em>We</em>) varying from 3 to 30. It was found that a higher <em>δ_w</em> value correlates with a higher Weber number in the Wenzel state, while a higher <em>δ_h</em> value corresponds to a lower Weber number in the same state. Additionally, droplet spreading is influenced by both <em>d_w</em> and <em>d_h</em>, and the promotion or inhibition of droplet spreading becomes more pronounced as the Weber number increases. Through theoretical analysis, a prediction model for the relationship between the dimensionless axial maximum spreading diameter and the dimensionless azimuthal maximum spreading diameter was established. Furthermore, the relationship between contact time and Weber number was elucidated. These insights can provide valuable guidance for the design of superhydrophobic surface structures.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105134"},"PeriodicalIF":3.6,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143848","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}

{"title":"Multiscale simulation of swirling atomization using a hybrid conservative level set/Lagaragian particle tracking method","authors":"Ya Wang ,&nbsp;Kun Luo ,&nbsp;Min Chai ,&nbsp;Changxiao Shao ,&nbsp;Jianren Fan","doi":"10.1016/j.ijmultiphaseflow.2025.105137","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105137","url":null,"abstract":"<div><div>Atomization is complex for intricate interfaces and multiple length scales, leading to a fundamental challenge to accurately describe its characteristics. To address this issue, we develop a hybrid conservative level Set (LS)/Lagrangian Particle Tracking (LPT) method that efficiently models both the liquid films and small droplets. The simulation of a settling droplet is utilized to validate the accuracy of the hybrid method, with results showing excellent agreement with theoretical predictions and the pure LS method. Additionally, the hybrid method effectively detects adhered structures and facilitates droplet conversion under specific criteria in parallel processing. Then the method is applied to studying swirling atomization characteristics. Despite minor discrepancies with the pure LS method, the hybrid method significantly reduces computational costs by 80% in this realistic scenario. With the effective method, we explore the influence of inlet conditions on atomization. Turbulent inflow and increased swirl intensity reduce the peak value of the volume probability density function, suggesting these factors promote more uniform droplet formation and enhance atomization. Vortex structure analysis reveals that swirl and Kelvin-Helmholtz instability dominate in high-velocity regions. The enstrophy, a key turbulence metric, increases with higher turbulence and swirl intensity. Enstrophy transport budget analysis highlights vortex stretching as the dominant term, with vorticity vectors consistently aligning with the intermediate principal strain rate across cases.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105137"},"PeriodicalIF":3.6,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143853","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}

{"title":"Dynamics of electrocoalescence-induced microfluidic droplet merging: Influence of the applied electric field","authors":"Aliasghar Mohammadi,&nbsp;Mehdi Moradi,&nbsp;Farshad Raji","doi":"10.1016/j.ijmultiphaseflow.2025.105135","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105135","url":null,"abstract":"<div><div>Merging droplets in microchannels is an essential task in a variety of microfluidic systems. In this study, the electrocoalescence of droplets dispersed in an otherwise immiscible fluid within a microfluidic device was investigated numerically. The microfluidic device, comprising a flow-focusing junction, was employed to generate droplets in an otherwise immiscible fluid. Subsequently, the generated droplets were directed over a series of microelectrodes. The continuous and dispersed phases were modeled as incompressible Newtonian fluids. The interface between the phases was tracked using a phase-field model. For a constant electric field, three distinct threshold voltages were identified. No droplet merging was observed at voltages less than the first threshold-voltage. The regular merging of three droplets was noted at voltages beyond the second threshold-voltage and less than the third threshold-voltage. The irregular merging of droplets occurs at voltages beyond the third threshold-voltage. The influence of the interfacial tension on the first threshold-voltage was examined for the constant electric field. The interfacial tension considerably modulates the first threshold-voltage. Investigations were also conducted on the mechanism of droplet coalescence under alternating and pulsed direct-current electric fields, along with the effect of frequency on the first threshold-voltage. The first threshold-voltage increases with increasing frequency in both electric fields. Generally, the effects of frequency are small compared with, for example, the influences of interfacial tension on the first threshold-voltage.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105135"},"PeriodicalIF":3.6,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143850","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}

{"title":"Bubbles climbing on two vertical superhydrophobic sticks","authors":"Pengfei Du ,&nbsp;Chengxu Tu ,&nbsp;Yukun Wang ,&nbsp;Yalei Zhao ,&nbsp;Ji Chen ,&nbsp;Jianzhong Lin ,&nbsp;Fubing Bao","doi":"10.1016/j.ijmultiphaseflow.2025.105133","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105133","url":null,"abstract":"<div><div>Bubble manipulation using superhydrophobic surfaces (SBS) is currently a subject of extensive research. Although flat surfaces have been the primary focus of investigation, with dimensions significantly larger than those of the bubbles, there has been limited attention given to the study of long slender SBSs, such as filaments and thin rods, which closely approximate the size of the bubbles. However, these elongated SBSs hold promise for enabling a wider range of bubble motion modes and an increased surface area for the bubbles. This study introduces the concept of double superhydrophobic sticks (DSBS) as a novel method to enhance the rising velocity (<em>U</em>) of buoyancy-driven bubbles. The examination identifies three distinct bubble configurations on the DSBS: nut-shaped, bell-shaped, and apple-shaped. Remarkably, the DSBS exhibits exceptional superaerophilicity, achieving a threefold increase in <em>U</em> for larger bubbles (with a diameter of approximately 4 mm). Prior research has already established the substantial impact of the length of the moving three-phase contact line (MCL) on the migration velocity of bubbles sliding on diverse planar SBSs. In contrast, our findings indicate that even the MCL length remains constant, the rising velocity of bubbles on DSBSs can be modulated by varying both the bubble size, the spacing between double sticks (<em>S</em>), and the diameter of the stick (<em>D</em>_s). Specifically, <em>U</em> is dependent on a revised Ohnesorge number (<span><math><mrow><mi>O</mi><msup><mrow><mi>h</mi></mrow><mo>*</mo></msup><mo>=</mo><msup><mrow><mi>L</mi></mrow><mo>*</mo></msup><mfrac><mi>μ</mi><msqrt><mrow><mi>ρ</mi><mi>σ</mi><mi>S</mi></mrow></msqrt></mfrac></mrow></math></span>), following a log-linear-scaling relationship with <em>U</em>. Considering the altered impact of the <em>S</em> on the bubble shape, we propose the <em>S</em> as the characteristic length and the shape correction factor <em>L</em>* (<span><math><mrow><msup><mrow><mi>L</mi></mrow><mo>*</mo></msup><mo>=</mo><mrow><mn>1</mn><mo>/</mo><msup><mrow><mrow><mi>ε</mi></mrow></mrow><mo>*</mo></msup></mrow><mo>=</mo><mrow><msub><mi>d</mi><mtext>eq</mtext></msub><mo>/</mo><mi>S</mi></mrow></mrow></math></span>) for the revised Ohnesorge number. Here, <em>d</em>_eq is the equivalent diameter of the bubble, <em>ε</em>* is the normalized stick gap ratio. The scaling law identified in this investigation effectively enables the simultaneous prediction of both the morphology and rising velocity of bubbles on the double sticks. Hence, our bubble manipulation method and its associated predictive model exhibits promising prospects for implementation across a range of gas-liquid systems, encompassing improved electrolytic hydrogen production, gas-liquid separation, adjustable flotation, and advanced surface chemistry.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105133"},"PeriodicalIF":3.6,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143844","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}

{"title":"Enhanced Level-Set Method for free surface flow applications","authors":"Paulin Ferro,&nbsp;Paul Landel,&nbsp;Carla Landrodie,&nbsp;Simon Guillot,&nbsp;Marc Pescheux","doi":"10.1016/j.ijmultiphaseflow.2025.105126","DOIUrl":"10.1016/j.ijmultiphaseflow.2025.105126","url":null,"abstract":"<div><div>This publication presents a solver using the Level-Set method (Sussman et al., 1994) for incompressible two phase flows with surface tension. A one fluid approach is adopted where both phases share the same velocity and pressure field. The Ghost Fluid Method (Fedkiw et al., 1999) is also used. An efficient and pragmatic solution is proposed to avoid interface displacement during the reinitialization of the Level-Set field. A solver called <em>LSFoam</em> is created in the OpenFOAM (Weller et al., 1998) framework with a consistent Rhie &amp; Chow interpolation (Cubero and Fueyo, 2007). This solver is tested on several test cases, covering different scales and flow configurations: rising bubble test case, Hysing et al. (2007), Rayleigh–Taylor instability simulations (Puckett et al., 1997), Ogee spillway flow (Erpicum et al., 2018), 3D dambreak simulation with a square cylinder obstacle (Gomez-Gesteira, 2013) and KVLCC2 steady resistance calculations (Larsson et al., 2014). Overall results are in excellent agreement with reference data and the present approach is very promising for moderate free surface deformations.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"185 ","pages":"Article 105126"},"PeriodicalIF":3.6,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143143847","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}