Annual Review of Fluid Mechanics最新文献_第7页

Self-Propulsion of Chemically Active Droplets 化学活性液滴的自推进

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-04-19 DOI: 10.1146/annurev-fluid-120720-012204

S. Michelin

{"title":"Self-Propulsion of Chemically Active Droplets","authors":"S. Michelin","doi":"10.1146/annurev-fluid-120720-012204","DOIUrl":"https://doi.org/10.1146/annurev-fluid-120720-012204","url":null,"abstract":"Microscopic active droplets are able to swim autonomously in viscous flows. This puzzling feature stems from solute exchanges with the surrounding fluid via surface reactions or their spontaneous solubilization and from the interfacial flows resulting from these solutes’ gradients. Contrary to asymmetric active colloids, these isotropic droplets swim spontaneously by exploiting the nonlinear coupling of solute transport with self-generated Marangoni flows; such coupling is also responsible for secondary transitions to more complex individual and collective dynamics. Thanks to their simple design and their sensitivity to physico-chemical signals, these droplets are fascinating to physicists, chemists, biologists, and fluid dynamicists alike in analyzing viscous self-propulsion and collective dynamics in active-matter systems, developing synthetic cellular models, or performing targeted biomedical or engineering applications. I review here the most recent and significant developments of this rapidly growing field, focusing on the mathematical and physical modeling of these intriguing droplets, together with their experimental design and characterization. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 55 is January 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":50754,"journal":{"name":"Annual Review of Fluid Mechanics","volume":null,"pages":null},"PeriodicalIF":27.7,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43844153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 41

FLEET Velocimetry for Aerodynamics 用于空气动力学的FLEET速度计

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-01-05 DOI: 10.1146/annurev-fluid-032321-025544

P. Danehy, R. Burns, D. Reese, Jonathan E Retter, S. Kearney

引用次数: 8

The Influence of Boundaries on Gravity Currents and Thin Films: Drainage, Confinement, Convergence, and Deformation Effects 边界对重力流和薄膜的影响：排水、约束、收敛和变形效应

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-01-05 DOI: 10.1146/annurev-fluid-030121-025957

Z. Zheng, H. Stone

引用次数: 13

Continuum and Molecular Dynamics Studies of the Hydrodynamics of Colloids Straddling a Fluid Interface 跨越流体界面的胶体流体动力学的连续体和分子动力学研究

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-11-18 DOI: 10.1146/annurev-fluid-032621-043917

C. Maldarelli, Nicole T. Donovan, Subramaniam Chembai Ganesh, Subhabrata Das, J. Koplik

{"title":"Continuum and Molecular Dynamics Studies of the Hydrodynamics of Colloids Straddling a Fluid Interface","authors":"C. Maldarelli, Nicole T. Donovan, Subramaniam Chembai Ganesh, Subhabrata Das, J. Koplik","doi":"10.1146/annurev-fluid-032621-043917","DOIUrl":"https://doi.org/10.1146/annurev-fluid-032621-043917","url":null,"abstract":"Colloid-sized particles (10 nm–10 μm in characteristic size) adsorb onto fluid interfaces, where they minimize their interfacial energy by straddling the surface, immersing themselves partly in each phase bounding the interface. The energy minimum achieved by relocation to the surface can be orders of magnitude greater than the thermal energy, effectively trapping the particles into monolayers, allowing them freedom only to translate and rotate along the surface. Particles adsorbed at interfaces are models for the understanding of the dynamics and assembly of particles in two dimensions and have broad technological applications, importantly in foam and emulsion science and in the bottom-up fabrication of new materials based on their monolayer assemblies. In this review, the hydrodynamics of the colloid motion along the surface is examined from both continuum and molecular dynamics frameworks. The interfacial energies of adsorbed particles is discussed first, followed by the hydrodynamics, starting with isolated particles followed by pairwise and multiple particle interactions. The effect of particle shape is emphasized, and the role played by the immersion depth and the surface rheology is discussed; experiments illustrating the applicability of the hydrodynamic studies are also examined. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":50754,"journal":{"name":"Annual Review of Fluid Mechanics","volume":null,"pages":null},"PeriodicalIF":27.7,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47871774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 5

Moisture in Textiles 纺织品中的水分

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-11-08 DOI: 10.1146/annurev-fluid-030121-034728

C. Duprat

引用次数: 9

Physics and Modeling of Large Flow Disturbances: Discrete Gust Encounters for Modern Air Vehicles 大气流扰动的物理和建模:现代飞行器的离散阵风遭遇

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-11-01 DOI: 10.1146/annurev-fluid-031621-085520

Anya R. Jones, O. Cetiner, M.J. Smith

引用次数: 32

Fluid Dynamics of Axial Turbomachinery: Blade- and Stage-Level Simulations and Models 轴流式涡轮机械的流体动力学：叶片级和级级的仿真与模型

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-10-13 DOI: 10.1146/annurev-fluid-031221-105530

R. Sandberg, V. Michelassi

{"title":"Fluid Dynamics of Axial Turbomachinery: Blade- and Stage-Level Simulations and Models","authors":"R. Sandberg, V. Michelassi","doi":"10.1146/annurev-fluid-031221-105530","DOIUrl":"https://doi.org/10.1146/annurev-fluid-031221-105530","url":null,"abstract":"The current generation of axial turbomachines are the culmination of decades of experience, and detailed understanding of the underlying flow physics has been a key factor for achieving high efficiency and reliability. Driven by advances in numerical methods and relentless growth in computing power, computational fluid dynamics has increasingly provided insights into the rich fluid dynamics involved and how it relates to loss generation. This article presents some of the complex flow phenomena occurring in bladed components of gas turbines and illustrates how simulations have contributed to their understanding and the challenges they pose for modeling. The interaction of key aerodynamic features with deterministic unsteadiness, caused by multiple blade rows, and stochastic unsteadiness, i.e., turbulence, is discussed. High-fidelity simulations of increasingly realistic configurations and models improved with help of machine learning promise to further grow turbomachinery performance and reliability and, thus, help fluid mechanics research have a greater industrial impact. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":50754,"journal":{"name":"Annual Review of Fluid Mechanics","volume":null,"pages":null},"PeriodicalIF":27.7,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45546780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 19

Flood Inundation Prediction 洪水淹没预测

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-10-13 DOI: 10.1146/annurev-fluid-030121-113138

P. Bates

引用次数: 48

Dynamic Mode Decomposition and Its Variants 动态模态分解及其变体

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-10-05 DOI: 10.1146/annurev-fluid-030121-015835

P. Schmid

引用次数: 125

Mass Transfer at the Ocean–Atmosphere Interface: The Role of Wave Breaking, Droplets, and Bubbles 海洋-大气界面的传质:波浪破碎、液滴和气泡的作用

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2021-09-29 DOI: 10.1146/annurev-fluid-030121-014132

L. Deike

{"title":"Mass Transfer at the Ocean–Atmosphere Interface: The Role of Wave Breaking, Droplets, and Bubbles","authors":"L. Deike","doi":"10.1146/annurev-fluid-030121-014132","DOIUrl":"https://doi.org/10.1146/annurev-fluid-030121-014132","url":null,"abstract":"Breaking waves modulate the transfer of energy, momentum, and mass between the ocean and atmosphere, controlling processes critical to the climate system, from gas exchange of carbon dioxide and oxygen to the generation of sea spray aerosols that can be transported in the atmosphere and serve as cloud condensation nuclei. The smallest components, i.e., drops and bubbles generated by breaking waves, play an outsize role. This fascinating problem is characterized by a wide range of length scales, from wind forcing the wave field at scales of 𝒪(1 km–0.1 m) to the dynamics of wave breaking at 𝒪(10–0.1 m); air bubble entrainment, dynamics, and dissolution in the water column at 𝒪(1 m–10 μm); and bubbles bursting at 𝒪(10 mm–1 μm), generating sea spray droplets at 𝒪(0.5 mm–0.5 μm) that are ejected into atmospheric turbulent boundary layers. I discuss recent progress to bridge these length scales, identifying the controlling processes and proposing a path toward mechanistic parameterizations of air–sea mass exchange that naturally accounts for sea state effects. Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 54 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.","PeriodicalId":50754,"journal":{"name":"Annual Review of Fluid Mechanics","volume":null,"pages":null},"PeriodicalIF":27.7,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47008851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 61