Annual Review of Fluid Mechanics最新文献_第6页

Icebergs Melting 冰山融化

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-13 DOI: 10.1146/annurev-fluid-032522-100734

C. Cenedese, F. Straneo

{"title":"Icebergs Melting","authors":"C. Cenedese, F. Straneo","doi":"10.1146/annurev-fluid-032522-100734","DOIUrl":"https://doi.org/10.1146/annurev-fluid-032522-100734","url":null,"abstract":"Iceberg calving accounts for half of the mass discharge from the Greenland and Antarctic ice sheets, which has increased dramatically over the last two decades. Through their displacement and progressive melt, icebergs can impact both the regional and large-scale ocean circulation and marine ecosystems by affecting its stratification and nutrient and carbon cycling. Freshwater input due to iceberg melt has the potential to impact regional sea ice distribution and the global overturning circulation. Notwithstanding their importance, our understanding of where and how icebergs melt is limited and their representation in ocean and climate models is oversimplistic, in part because they are informed by only a handful of observations. As a result, model-based predictions of iceberg melt rates, of the fate of the meltwater, and of its impact on the ocean are highly uncertain. New observational, modeling, and experimental studies are needed to improve our understanding of iceberg melting and hence, the forecasting power of climate models. 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":" ","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48942596","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: 7

Evaporation of Sessile Droplets 固定液滴的蒸发

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-13 DOI: 10.1146/annurev-fluid-031822-013213

S. Wilson, Hannah-May D'Ambrosio

引用次数: 26

Fluid Dynamics of Polar Vortices on Earth, Mars, and Titan 地球、火星和泰坦极地涡旋的流体动力学

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-13 DOI: 10.1146/annurev-fluid-120720-032208

D. Waugh

引用次数: 3

Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions 气液泡沫动力学:从结构元素到连续体描述

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-13 DOI: 10.1146/annurev-fluid-032822-125417

P. Stewart, S. Hilgenfeldt

{"title":"Gas-Liquid Foam Dynamics: From Structural Elements to Continuum Descriptions","authors":"P. Stewart, S. Hilgenfeldt","doi":"10.1146/annurev-fluid-032822-125417","DOIUrl":"https://doi.org/10.1146/annurev-fluid-032822-125417","url":null,"abstract":"Gas-liquid foams are important in applications ranging from oil recovery and mineral flotation to food science and microfluidics. Beyond their practical use, they represent an intriguing prototype of a soft material with a complex, viscoelastic rheological response. Crucially, foams allow detailed access to fluid-dynamical processes on the mesoscale of bubbles underlying the large-scale material behavior. This review emphasizes the importance of the geometry and interaction of mesoscale structural elements for the description of the dynamics of entire foams. Using examples including bulk flow of foam under steady shear, interfacial instabilities, and foam fracture through bubble rupture, this article highlights the wide variety of available theoretical descriptions, ranging from network modeling approaches coupling structural element equations of motion to full continuum models with elastoviscoplastic constitutive relations. Foams offer the opportunity to develop rigorous links between such disparate descriptions, providing a blueprint for physical modeling of dynamical multiscale systems with complex structure. 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":" ","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45629701","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: 6

The Fluid Mechanics of Deep-Sea Mining 深海采矿的流体力学

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-13 DOI: 10.1146/annurev-fluid-031822-010257

T. Peacock, R. Ouillon

{"title":"The Fluid Mechanics of Deep-Sea Mining","authors":"T. Peacock, R. Ouillon","doi":"10.1146/annurev-fluid-031822-010257","DOIUrl":"https://doi.org/10.1146/annurev-fluid-031822-010257","url":null,"abstract":"Fluid mechanics lies at the heart of many of the physical processes associated with the nascent deep-sea mining industry. The evolution and fate of sediment plumes that would be produced by seabed mining activities, which are central to the assessment of the environmental impact, are entirely determined by transport processes. These processes, which include advection, turbulent mixing, buoyancy, differential particle settling, and flocculation, operate at a multitude of spatiotemporal scales. A combination of historical and recent efforts that combine theory, numerical modeling, laboratory experiments, and field trials has yielded significant progress, including assessing the role of environmental and operational parameters in setting the extent of sediment plumes, but more fundamental and applied fluid mechanics research is needed before models can accurately predict commercial-scale scenarios. Furthermore, fluid mechanics underpins the design and operation of proposed mining technologies, for which there are currently no established best practices. 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":" ","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49660354","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: 7

Motion in Stratified Fluids 分层流体中的运动

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-10-05 DOI: 10.1146/annurev-fluid-120720-011132

R. More, A. Ardekani

引用次数: 4

The Flow Physics of Face Masks 口罩的流动物理

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-09-28 DOI: 10.1146/annurev-fluid-120720-035029

R. Mittal, K. Breuer, J. Seo

{"title":"The Flow Physics of Face Masks","authors":"R. Mittal, K. Breuer, J. Seo","doi":"10.1146/annurev-fluid-120720-035029","DOIUrl":"https://doi.org/10.1146/annurev-fluid-120720-035029","url":null,"abstract":"Although face masks have been used for over a century to provide protection against airborne pathogens and pollutants, close scrutiny of their effectiveness has peaked in the past two years in response to the COVID-19 pandemic. The simplicity of face masks belies the complexity of the physical phenomena that determine their effectiveness as a defense against airborne infections. This complexity is rooted in the fact that the effectiveness of face masks depends on the combined effects of respiratory aerodynamics, filtration flow physics, droplet dynamics and their interactions with porous materials, structural dynamics, physiology, and even human behavior. At its core, however, the face mask is a flow-handling device, and in the current review, we take a flow-physics-centric view of face masks and the key phenomena that underlie their function. We summarize the state-of-the-art in experimental measurements, as well as the growing body of computational studies that have contributed to our understanding of the factors that determine the effectiveness of face masks. The review also lays out some of the important open questions and technical challenges associated with the effectiveness of face masks. 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":" ","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44996260","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: 9

Advancing Access to Cutting-Edge Tabletop Science 推进访问尖端桌面科学

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-09-28 DOI: 10.1146/annurev-fluid-120720-025348

M. Schatz, Pietro Cicuta, V. Gordon, T. Pilizota, B. Rodenborn, M. Shattuck, H. Swinney

引用次数: 2

Immersed Boundary Methods: Historical Perspective and Future Outlook 浸没边界法:历史与未来展望

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-09-23 DOI: 10.1146/annurev-fluid-120720-022129

R. Verzicco

{"title":"Immersed Boundary Methods: Historical Perspective and Future Outlook","authors":"R. Verzicco","doi":"10.1146/annurev-fluid-120720-022129","DOIUrl":"https://doi.org/10.1146/annurev-fluid-120720-022129","url":null,"abstract":"Immersed boundary methods (IBMs) are versatile and efficient computational techniques to solve flow problems in complex geometric configurations that retain the simplicity and efficiency of Cartesian structured meshes. Although these methods became known in the 1970s and gained credibility only in the new millennium, they had already been conceived and implemented at the beginning of the 1960s, even if the early computers of those times did not allow researchers to exploit their potential. Nowadays IBMs are established numerical schemes employed for the solution of many complex problems in which fluid mechanics may account for only part of the multiphysics dynamics. Despite the indisputable advantages, these methods also have drawbacks, and each problem should be carefully analyzed before deciding which particular IBM implementation is most suitable and whether additional modeling is necessary. High–Reynolds number flows constitute one of the main limitations of IBMs owing to the resolution of thin wall shear layers, which cannot benefit from anisotropic grid refinement at the boundaries. To alleviate this weakness, researchers have developed IBM-compliant wall models and local grid refinement strategies, although in these cases possible pitfalls must also be considered. 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":"1 1","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41583864","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: 21

Submesoscale Dynamics in the Upper Ocean 上层海洋的亚中尺度动力学

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2022-09-23 DOI: 10.1146/annurev-fluid-031422-095147

John R. Taylor, A. Thompson

{"title":"Submesoscale Dynamics in the Upper Ocean","authors":"John R. Taylor, A. Thompson","doi":"10.1146/annurev-fluid-031422-095147","DOIUrl":"https://doi.org/10.1146/annurev-fluid-031422-095147","url":null,"abstract":"Oceanic motions with spatial scales of 200 m–20 km, called submesoscales, are ubiquitous in the upper ocean and serve as a key intermediary between larger-scale balanced dynamics and unbalanced turbulence. Here, we introduce the fluid dynamics of submesoscales and contrast them with motions at larger and smaller scales. We summarize the various ways in which submesoscales develop due to instabilities that extract potential or kinetic energy from larger-scale balanced currents; some instabilities have counterparts at larger scales, while others are distinct to the submesoscale regime. Submesoscales modify the density stratification in the upper ocean and redistribute energy between scales. These energy transfers are complex, having both up-scale and down-scale components. Submesoscale eddies and fronts also contribute to a spatially heterogeneous distribution of shear and restratification that leave an imprint on upper ocean turbulence. The impact of submesoscales on the Earth's climate remains an exciting frontier. 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":" ","pages":""},"PeriodicalIF":27.7,"publicationDate":"2022-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46758975","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: 11