发布求助
文献互助 智能选刊 最新文献

Progress in Multiphase Flow Research最新文献

筛选
英文 中文
Heat Transfer Characteristics on Vibrating Vertical Surface in Gravitational Direction under Dropwise Condesation 水滴凝结作用下振动垂直表面重力方向传热特性研究
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.1.135
H. Shiraiwa, T. Hosokawa
{"title":"Heat Transfer Characteristics on Vibrating Vertical Surface in Gravitational Direction under Dropwise Condesation","authors":"H. Shiraiwa, T. Hosokawa","doi":"10.3811/PMFR.1.135","DOIUrl":"https://doi.org/10.3811/PMFR.1.135","url":null,"abstract":"Recently, the development of the high-performance heat exchanger is desired from the view point of saving energy and resources. The application to the heat exchanger of dropwise condensation phenomenon which shows high heat transfer performance is desired. However, the relationship between the behavior of the condensate droplet and the heat transfer on the wide condensing surface in dropwise condensation has been not clarified.In this study, the heat transfer characteristics under dropwise condensation are investigated by the calculation and the experiment when the vertical condensing surface is vibrated in gravitational direction. As a result, we found that the heat transfer coefficient was enhanced by the vibration.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131305400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Cavitation and Elementary Vortex in Turbulence 湍流中空化与基本涡的相互作用
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.3.1
K. Okabayashi, T. Ohta, T. Kajishima
{"title":"Interaction between Cavitation and Elementary Vortex in Turbulence","authors":"K. Okabayashi, T. Ohta, T. Kajishima","doi":"10.3811/PMFR.3.1","DOIUrl":"https://doi.org/10.3811/PMFR.3.1","url":null,"abstract":"We focus our attention on the low pressure area in turbulent fine vortices, which is Burgers vortex type and closely related to cavitation inception, because it has been ignored in previous methods for cavitating flow simulation. As a basis of model construction, the interaction between a Burgers vortex and cavitation is investigated by the direct numerical simulation (DNS). The vortex is artificially reproduced to represent a fine-scale elementary motion in fully developed turbulence. The results show that both the circumferential velocity and the streamwise vorticity distributions shift due to the sudden expansion by cavitation inception. Assuming the circulation is kept constant, we derive a new model which represents velocity modulation of an elementary vortex for the case of cavitation. Our model successfully explains the DNS results. This simple model can become the basic concept of cavitating turbulence model.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115009139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Structure of the Gas-Liquid Annular Two-Phase Flow in a Nozzle Section 喷嘴段气液环形两相流的结构
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.1.231
Kenji Yoshida, I. Kataoka, S. Ohmori, M. Mori
{"title":"Structure of the Gas-Liquid Annular Two-Phase Flow in a Nozzle Section","authors":"Kenji Yoshida, I. Kataoka, S. Ohmori, M. Mori","doi":"10.3811/PMFR.1.231","DOIUrl":"https://doi.org/10.3811/PMFR.1.231","url":null,"abstract":"","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129890681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Void Fraction Measurement by Using Electromagnetic Induction 电磁感应法测定空隙率
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.1.265
T. Kuwahara, H. Yamaguchi
{"title":"Void Fraction Measurement by Using Electromagnetic Induction","authors":"T. Kuwahara, H. Yamaguchi","doi":"10.3811/PMFR.1.265","DOIUrl":"https://doi.org/10.3811/PMFR.1.265","url":null,"abstract":"This paper describes a new measuring technique of void fraction using a magnetic fluid. The proposed measurement utilizes the electromagnetic induction so that the measurement can be realized with simple experimental devices. The present study consists of two kinds of experiments; one is “static experiment (calibration test)” and another is “flow experiment (actual flow test)”. In the present study, the experiments have been performed with fully diluted magnetic fluid for the purpose of applying to the ordinary two-phase flows such as water-air two-phase flow. Results of the experiments have verified that the proposed measuring technique of void fraction is very effective to measure the void fraction in the two-phase flow by adding a small amount of the magnetic fluid to objective fluid.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128309478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Turbulence Modulation Induced by Bubble-Liquid Mutual Interaction in an Oscillating-Grid Turbulence 振荡网格湍流中气泡-液体相互作用诱导的湍流调制
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.3.9
Chihiro Utsunomiya, K. Morikawa, S. Urano, T. Sanada, T. Saito
{"title":"Turbulence Modulation Induced by Bubble-Liquid Mutual Interaction in an Oscillating-Grid Turbulence","authors":"Chihiro Utsunomiya, K. Morikawa, S. Urano, T. Sanada, T. Saito","doi":"10.3811/PMFR.3.9","DOIUrl":"https://doi.org/10.3811/PMFR.3.9","url":null,"abstract":"Turbulence modulation induced by bubble swarms was experimentally investigated. Homogeneous isotropic turbulence is formed by using an oscillating grid in a cylindrical acrylic vessel. The bubble size and generation frequency are completely controlled using a bubble generator. A bubble swarm is generated at a frequency of 4 Hz and consists of 19 bubbles of 2.8 mm in equivalent diameter. The liquid phase velocities were measured via two LDA (Laser Doppler Anemometer). Turbulence intensity, spatial correlation and integral scale were evaluated from the LDA data obtained by the two spatially-separate-point measurement. The turbulence intensity dramatically changed by adding bubble swarms. The original isotropic turbulence was modulated to the anisotropic turbulence by the mutual interaction between bubble swarms and ambient isotropic turbulence. The turbulence modulation was also confirmed by the integral scale.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133474227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Numerical Simulation of Two-Phase Flows with Phase Change Using a Phase-Field Method 基于相场法的相变两相流数值模拟
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.2.173
N. Takada, A. Tomiyama
{"title":"Numerical Simulation of Two-Phase Flows with Phase Change Using a Phase-Field Method","authors":"N. Takada, A. Tomiyama","doi":"10.3811/PMFR.2.173","DOIUrl":"https://doi.org/10.3811/PMFR.2.173","url":null,"abstract":"An interface-tracking method based on a phase-field modeling is evaluated through numerical simulation of thermal liquid-vapor flows with phase change in micro-fluidics devices. In the modeling, the interface with a finite width between phases is autonomously formed while satisfying the free-energy theory. The phase-field method therefore needs no conventional elaborating algorithms for advection and reconstruction of the interfaces. The numerical results of two-dimensional van-der-Waals fluid flows around a critical point prove that the method has a potential to capture liquid-vapor motions in the non-ideal fluid with heat and mass transfer across the interfaces, such as bubble nucleation on a heater and cavitating flows around a solid body.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"875 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125675970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Measurement of Two-Phase Flow Using Multi-Wave Ultrasonic 多波超声测量两相流
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.1.17
H. Murakawa, H. Kikura, G. Yamanaka, M. Aritomi
{"title":"Measurement of Two-Phase Flow Using Multi-Wave Ultrasonic","authors":"H. Murakawa, H. Kikura, G. Yamanaka, M. Aritomi","doi":"10.3811/PMFR.1.17","DOIUrl":"https://doi.org/10.3811/PMFR.1.17","url":null,"abstract":"This paper proposes a new measurement technique for multi-phase flow using correlation and multi-wave method. The authors developed a unique ultrasonic transducer named as multi-wave TDX. The TDX consists of a special ultrasonic element having two basic ultrasonic frequencies. The central 3 mm diameter area has a basic frequency of 8 MHz and the outer area has a basic frequency of 2 MHz. The TDX can emit the two ultrasonic frequencies independently. Using the two ultrasonic wave lengths, signals of two basic frequencies can be obtained at the same time. Comparing with the each echo signal, the signal combination can be classified into 3 groups. Hence, applying ultrasonic correlation method (UTDC) and the signal comparison method for multi-wave method, bubble rising velocity and liquid velocity distribution can be obtained simultaneously.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121608929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Numerical Simulation of the Interaction between a Vortex Ring and Solid Particles 涡旋环与固体颗粒相互作用的数值模拟
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.2.181
H. Yagami, T. Uchiyama
{"title":"Numerical Simulation of the Interaction between a Vortex Ring and Solid Particles","authors":"H. Yagami, T. Uchiyama","doi":"10.3811/PMFR.2.181","DOIUrl":"https://doi.org/10.3811/PMFR.2.181","url":null,"abstract":"","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116047518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Visualization of a Standing Eddy at the Rear of the Bubble by Using Photochromic Dye 利用光致变色染料可视化气泡后方的静止涡流
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.2.125
Minori Shirota, Tomoki Ono, K. Sugihara, T. Sanada, Masao Watanabe
{"title":"Visualization of a Standing Eddy at the Rear of the Bubble by Using Photochromic Dye","authors":"Minori Shirota, Tomoki Ono, K. Sugihara, T. Sanada, Masao Watanabe","doi":"10.3811/PMFR.2.125","DOIUrl":"https://doi.org/10.3811/PMFR.2.125","url":null,"abstract":"The structure of the flow around a rising bubble in silicone oil is experimentally studied by flow visualization using photochromic dye. The first experimental support for the existence of the standing eddy at the rear of the bubble, as predicted by a previous study by Ryskin and Leal [J. Fluid Mech. 148, 19-35 (1984)], was obtained in the case of high bubble aspect ratio χ . The drag coefficient of small bubble rising in this solution was compared with theoretical one derived by Mei [Phys. Fluids, 6, 418-420(1994)], and it is found that the bubble rising in this solution behaves as the “clean bubble\". It is also shown that both the degree of the fore-aft asymmetry of the bubble shape and the size of standing eddy increases as the discrepancy in both rising velocity and drag coefficient between experimental results and Moore's theory [J. Fluid Mech. 23, 749-766 (1965)] increases.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128787966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Vortex Simulation of Bubble Plume around a Rectangular Cylinder 矩形圆柱上气泡羽流的涡模拟
Progress in Multiphase Flow Research Pub Date : 1900-01-01 DOI: 10.3811/PMFR.2.149
T. Degawa, T. Uchiyama
{"title":"Vortex Simulation of Bubble Plume around a Rectangular Cylinder","authors":"T. Degawa, T. Uchiyama","doi":"10.3811/PMFR.2.149","DOIUrl":"https://doi.org/10.3811/PMFR.2.149","url":null,"abstract":"The bubble plume around a square-section cylinder is simulated. The two-dimensional vortex method for gas-liquid two-phase flow, proposed by the authors in a prior paper, is employed. The small air bubbles are injected into still water from a nozzle below a square-section cylinder of which side length is equivalent to the nozzle width. The water velocity on the horizontal cross-sections satisfies the similarity distribution around the plume centerline. The cylinder affects mainly the water flow in the upper region. The water velocity is lower, but the vertical component of the water turbulent intensity is two times higher than those for the plume without the cylinder. The water flow spreads more toward the horizontal direction.","PeriodicalId":381569,"journal":{"name":"Progress in Multiphase Flow Research","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129667448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书