Annual Review of Fluid Mechanics最新文献_第3页

Fluid-Elastic Interactions near Contact at Low Reynolds Number 低雷诺数下近接触流体-弹性相互作用

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-10-10 DOI: 10.1146/annurev-fluid-120720-024426

Bhargav Rallabandi

引用次数: 1

Large-Scale Eddy-Mean Flow Interaction in the Earth's Extratropical Atmosphere 地球温带大气中大尺度涡旋-平均流相互作用

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-10-03 DOI: 10.1146/annurev-fluid-121021-035602

Noboru Nakamura

引用次数: 0

The Dynamics of Jupiter's and Saturn's Weather Layers: A Synthesis After Cassini and Juno 木星和土星天气层的动力学:卡西尼号和朱诺号之后的综合

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-10-03 DOI: 10.1146/annurev-fluid-121021-040058

Peter L. Read

{"title":"The Dynamics of Jupiter's and Saturn's Weather Layers: A Synthesis After Cassini and Juno","authors":"Peter L. Read","doi":"10.1146/annurev-fluid-121021-040058","DOIUrl":"https://doi.org/10.1146/annurev-fluid-121021-040058","url":null,"abstract":"Until recently, observations of the giant planets of our Solar System were confined to sampling relatively shallow regions of their atmospheres, leaving many uncertainties as to the dynamics of deeper layers. The Cassini and Juno missions to Saturn and Jupiter, however, have begun to address these issues, for example, by measuring their gravity and magnetic fields. The results show that the zonally coherent jets and cloud bands extend to levels where the electrical conductivity of the fluid becomes significant, whereas large-scale vortices, such as the Great Red Spot, are relatively shallow but may have deep-seated roots. The polar regions also exhibit intense cyclonic vortices that, on Jupiter, arrange themselves into remarkably regular “vortex crystals.” Numerical models seem able to capture some of this complexity, but many issues remain unresolved, suggesting a need for models that can represent both deep and shallow processes sufficiently realistic ally to compare with observations.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. 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":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697134","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: 0

Building Ventilation: The Consequences for Personal Exposure 建筑物通风:个人暴露的后果

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-10-03 DOI: 10.1146/annurev-fluid-120720-015857

Rajesh K. Bhagat, Stuart B. Dalziel, M.S. Davies Wykes, P.F. Linden

{"title":"Building Ventilation: The Consequences for Personal Exposure","authors":"Rajesh K. Bhagat, Stuart B. Dalziel, M.S. Davies Wykes, P.F. Linden","doi":"10.1146/annurev-fluid-120720-015857","DOIUrl":"https://doi.org/10.1146/annurev-fluid-120720-015857","url":null,"abstract":"Ventilation is central to human civilization. Without it, the indoor environment rapidly becomes uncomfortable or dangerous, but too much ventilation can be expensive. We spend much of our time indoors, where we are exposed to pollutants and can be infected by airborne diseases. Ventilation removes pollution and bioaerosols from indoor sources but also brings in pollution from outdoors. To determine an appropriate level of ventilation and an appropriate way of providing it, one must understand that the needs for ventilation extend beyond simple thermal comfort; the quality of indoor air is at least as important. An effective ventilation system will remove unwanted contaminants, whether generated within the space by activities or by the simple act of breathing, and ensure that the ventilation system does not itself introduce or spread contaminants from elsewhere. This review explores how ventilation flow in buildings influences personal exposure to indoor pollutants and the spread of airborne diseases.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. 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":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697131","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: 0

Bubble Plumes in Nature 自然界中的气泡羽流

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-10-03 DOI: 10.1146/annurev-fluid-120720-011833

Silvana S.S. Cardoso, Julyan H.E. Cartwright

引用次数: 0

The Fluid Mechanics of Female Reproduction: A Review of the Biofluid Mechanics of Pregnancy and Delivery 女性生殖的流体力学:妊娠和分娩的生物流体力学综述

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-09-27 DOI: 10.1146/annurev-fluid-121021-033738

Megan C. Leftwich, Alexa C. Baumer

{"title":"The Fluid Mechanics of Female Reproduction: A Review of the Biofluid Mechanics of Pregnancy and Delivery","authors":"Megan C. Leftwich, Alexa C. Baumer","doi":"10.1146/annurev-fluid-121021-033738","DOIUrl":"https://doi.org/10.1146/annurev-fluid-121021-033738","url":null,"abstract":"Reproductive biomechanics, a broad and developing field, contains fluid mechanics problems at every stage. In particular, the human female reproductive system is a complex and dynamic fluid-structure system. Until recently, the majority of this research focused on the early moments of reproduction—namely, the transport phenomena that dominate fertilization and implantation. However, in the past two decades, fluid mechanics has begun to be used in investigations of all aspects surrounding pregnancy, labor, and delivery. In this review, we discuss human reproduction starting with the nonpregnant uterus through implantation, delivery, and lactation and breastfeeding. We cover physiologic changes from the transformation of the uterus and the cervical remodeling process to the development of the placenta and the beginning of lactation. We examine the role of reproductive fluids such as amniotic fluid and vernix caseosa, and how force is transferred during labor.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. 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":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697176","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: 0

Vortices and Forces in Biological Flight: Insects, Birds, and Bats 生物飞行中的涡旋和力:昆虫、鸟类和蝙蝠

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-09-22 DOI: 10.1146/annurev-fluid-120821-032304

Hao Liu, Shizhao Wang, Tianshu Liu

{"title":"Vortices and Forces in Biological Flight: Insects, Birds, and Bats","authors":"Hao Liu, Shizhao Wang, Tianshu Liu","doi":"10.1146/annurev-fluid-120821-032304","DOIUrl":"https://doi.org/10.1146/annurev-fluid-120821-032304","url":null,"abstract":"Insects, birds, and bats that power and control flight by flapping their wings perform excellent flight stability and maneuverability by rapidly and continuously varying their wing motions. This article provides an overview of the state of the art of vortex-dominated, unsteady flapping aerodynamics from the viewpoint of diversity and uniformity associated with dominant vortices, particularly of the relevant physical aspects of the flight of insects and vertebrates in the low- and intermediate-Reynolds-number ( Re) regime of 100 to 106. After briefly describing wing morphology and kinematics, we discuss the main vortices generated by flapping wings and the aerodynamic forces associated with these structures, focusing on leading-edge vortices (LEVs), wake vortices, and vortices generated by wing motions over a broad Re range. The LEVs are intensified by dynamic wing morphing in bird and bat flight, producing a significantly elevated vortex lift. The complex wake vortices are the footprints of lift generation; thus, the time-averaged vortex lift can be estimated from wake velocity data. Computational fluid dynamics modeling, quasi-steady models, and vortex lift models are useful tools to elucidate the intrinsic relationships between the lift and the dominant vortices in the near- and far-fields in flapping flight.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. 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":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697551","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: 0

Fluid Dynamics of Squirmers and Ciliated Microorganisms 蠕动体和纤毛微生物的流体动力学

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-09-22 DOI: 10.1146/annurev-fluid-121021-042929

Takuji Ishikawa

{"title":"Fluid Dynamics of Squirmers and Ciliated Microorganisms","authors":"Takuji Ishikawa","doi":"10.1146/annurev-fluid-121021-042929","DOIUrl":"https://doi.org/10.1146/annurev-fluid-121021-042929","url":null,"abstract":"The fluid dynamics of microswimmers has received attention from the fields of microbiology, microrobotics, and active matter. Microorganisms have evolved organelles termed cilia for propulsion through liquids. Each cilium periodically performs effective and recovery strokes, creating a metachronal wave as a whole and developing a propulsive force. One well-established mathematical model of ciliary swimming is the squirmer model, which focuses on surface squirming velocities. This model is also useful when studying active colloids and droplets. The squirmer model has been recently used to investigate the behaviors of microswimmers in complex environments, their collective dynamics, and the characteristics of active fluids. Efforts have also been made to broaden the range of applications beyond the assortment permitted by the squirmer model, which was established to specifically represent ciliary flow and incorporate biological features. The stress swimmer model imposes stresses above the cell body surface that enforce the no-slip condition. The ciliated swimmer model precisely reproduces the behaviors of each cilium that engages in mutual hydrodynamic interactions. Mathematical models have improved our understanding of various microbial phenomena, including cell–cell and cell–wall interactions and energetics. Here, I review recent advances in the hydrodynamics of ciliary swimming and then discuss future challenges.Expected final online publication date for the Annual Review of Fluid Mechanics, Volume 56 is January 2024. 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":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49697550","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: 0

Flows Over Rotating Disks and Cones 流动在旋转的圆盘和锥上

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-09-15 DOI: 10.1146/annurev-fluid-121021-043651

P. Henrik Alfredsson, Kentaro Kato, R.J. Lingwood

引用次数: 0

Turbulent Drag Reduction by Streamwise Traveling Waves of Wall-Normal Forcing 沿流行波的壁法向力减少湍流阻力

IF 27.7 1区工程技术

Annual Review of Fluid Mechanics Pub Date : 2023-08-24 DOI: 10.1146/annurev-fluid-120720-021445

K. Fukagata, K. Iwamoto, Y. Hasegawa

引用次数: 1