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Journal of Fluid Mechanics最新文献

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Fully developed flow through shrouded-fin arrays: exact and asymptotic solutions 流经遮蔽鳍阵列的完全展开流：精确和渐近解
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.505
Hiroyuki Miyoshi, Toby L. Kirk, Marc Hodes, Darren G. Crowdy
{"title":"Fully developed flow through shrouded-fin arrays: exact and asymptotic solutions","authors":"Hiroyuki Miyoshi, Toby L. Kirk, Marc Hodes, Darren G. Crowdy","doi":"10.1017/jfm.2024.505","DOIUrl":"https://doi.org/10.1017/jfm.2024.505","url":null,"abstract":"<p><img href=\"S0022112024005056_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005056/resource/name/S0022112024005056_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"32 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207635","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}
引用次数: 0
Effect of pitch on nonlinear dynamics of helical vortex disturbed by long-wave instability 螺距对受长波不稳定性干扰的螺旋涡旋非线性动力学的影响
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.529
Yuji Hattori, Akihiro Hirano
{"title":"Effect of pitch on nonlinear dynamics of helical vortex disturbed by long-wave instability","authors":"Yuji Hattori, Akihiro Hirano","doi":"10.1017/jfm.2024.529","DOIUrl":"https://doi.org/10.1017/jfm.2024.529","url":null,"abstract":"<p><img href=\"S0022112024005299_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005299/resource/name/S0022112024005299_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"50 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207636","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}
引用次数: 0
Transport scaling in porous media convection 多孔介质对流中的传输缩放
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.528
Xiaojue Zhu, Yifeng Fu, Marco De Paoli
{"title":"Transport scaling in porous media convection","authors":"Xiaojue Zhu, Yifeng Fu, Marco De Paoli","doi":"10.1017/jfm.2024.528","DOIUrl":"https://doi.org/10.1017/jfm.2024.528","url":null,"abstract":"<p><img href=\"S0022112024005287_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005287/resource/name/S0022112024005287_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"7 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207634","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}
引用次数: 0
Numerical study of a generic ship's airwake for understanding bi‐stability mechanism 为了解双稳态机制而对一般船舶气浪进行的数值研究
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.511
Kewei Xu, Xinchao Su, Isak Jonsson, Rickard Bensow, Sinisa Krajnovic
{"title":"Numerical study of a generic ship's airwake for understanding bi‐stability mechanism","authors":"Kewei Xu, Xinchao Su, Isak Jonsson, Rickard Bensow, Sinisa Krajnovic","doi":"10.1017/jfm.2024.511","DOIUrl":"https://doi.org/10.1017/jfm.2024.511","url":null,"abstract":"<p><img href=\"S0022112024005111_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005111/resource/name/S0022112024005111_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"5 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207632","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}
引用次数: 0
Thermoelectrohydrodynamic convection in a finite cylindrical annulus under microgravity 微重力条件下有限圆柱环内的热电流体动力对流
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.538
Changwoo Kang, Innocent Mutabazi, Harunori N. Yoshikawa
{"title":"Thermoelectrohydrodynamic convection in a finite cylindrical annulus under microgravity","authors":"Changwoo Kang, Innocent Mutabazi, Harunori N. Yoshikawa","doi":"10.1017/jfm.2024.538","DOIUrl":"https://doi.org/10.1017/jfm.2024.538","url":null,"abstract":"<p><img href=\"S002211202400538X_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS002211202400538X/resource/name/S002211202400538X_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"28 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207637","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}
引用次数: 0
Three-dimensional generative adversarial networks for turbulent flow estimation from wall measurements 根据壁面测量结果估算湍流的三维生成对抗网络
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.432
Antonio Cuéllar, Alejandro Güemes, Andrea Ianiro, Óscar Flores, Ricardo Vinuesa, Stefano Discetti
{"title":"Three-dimensional generative adversarial networks for turbulent flow estimation from wall measurements","authors":"Antonio Cuéllar, Alejandro Güemes, Andrea Ianiro, Óscar Flores, Ricardo Vinuesa, Stefano Discetti","doi":"10.1017/jfm.2024.432","DOIUrl":"https://doi.org/10.1017/jfm.2024.432","url":null,"abstract":"<p><img href=\"S0022112024004324_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024004324/resource/name/S0022112024004324_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"10 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226608","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}
引用次数: 0
Numerical validation of scaling laws for stratified turbulence 分层湍流比例定律的数值验证
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.531
Pascale Garaud, Gregory P. Chini, Laura Cope, Kasturi Shah, Colm-cille P. Caulfield
{"title":"Numerical validation of scaling laws for stratified turbulence","authors":"Pascale Garaud, Gregory P. Chini, Laura Cope, Kasturi Shah, Colm-cille P. Caulfield","doi":"10.1017/jfm.2024.531","DOIUrl":"https://doi.org/10.1017/jfm.2024.531","url":null,"abstract":"<p><img href=\"S0022112024005317_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005317/resource/name/S0022112024005317_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"17 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207638","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}
引用次数: 0
Jet mixing enhancement with Bayesian optimization, deep learning and persistent data topology 利用贝叶斯优化、深度学习和持久数据拓扑增强喷气混合效果
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.525
Yiqing Li, Bernd R. Noack, Tianyu Wang, Guy Y. Cornejo Maceda, Ethan Pickering, Tamir Shaqarin, Artur Tyliszczak
{"title":"Jet mixing enhancement with Bayesian optimization, deep learning and persistent data topology","authors":"Yiqing Li, Bernd R. Noack, Tianyu Wang, Guy Y. Cornejo Maceda, Ethan Pickering, Tamir Shaqarin, Artur Tyliszczak","doi":"10.1017/jfm.2024.525","DOIUrl":"https://doi.org/10.1017/jfm.2024.525","url":null,"abstract":"<p><img href=\"S0022112024005251_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024005251/resource/name/S0022112024005251_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"2017 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207633","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}
引用次数: 0
Transition delay in a Mach 6 boundary layer using steady blowing and suction strips 利用稳定吹气和吸气条在马赫数 6 边界层中的过渡延迟
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-20 DOI: 10.1017/jfm.2024.468
Christoph Hader, Hermann F. Fasel
{"title":"Transition delay in a Mach 6 boundary layer using steady blowing and suction strips","authors":"Christoph Hader, Hermann F. Fasel","doi":"10.1017/jfm.2024.468","DOIUrl":"https://doi.org/10.1017/jfm.2024.468","url":null,"abstract":"<p><img href=\"S0022112024004683_figAb.png\" mimesubtype=\"png\" mimetype=\"image\" orientation=\"\" position=\"\" src=\"https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0022112024004683/resource/name/S0022112024004683_figAb.png?pub-status=live\" type=\"\"/></p>","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"17 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207639","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}
引用次数: 0
Inertial particle focusing in fluid flow through spiral ducts: dynamics, tipping phenomena and particle separation 流体流经螺旋管道时的惯性颗粒聚焦：动力学、倾倒现象和颗粒分离
IF 3.7 2区 工程技术
Journal of Fluid Mechanics Pub Date : 2024-08-14 DOI: 10.1017/jfm.2024.487
Rahil N. Valani, Brendan Harding, Yvonne M. Stokes
{"title":"Inertial particle focusing in fluid flow through spiral ducts: dynamics, tipping phenomena and particle separation","authors":"Rahil N. Valani, Brendan Harding, Yvonne M. Stokes","doi":"10.1017/jfm.2024.487","DOIUrl":"https://doi.org/10.1017/jfm.2024.487","url":null,"abstract":"Small finite-size particles suspended in fluid flow through an enclosed curved duct can focus to points or periodic orbits in the two-dimensional duct cross-section. This particle focusing is due to a balance between inertial lift forces arising from axial flow and drag forces arising from cross-sectional vortices. The inertial particle focusing phenomenon has been exploited in various industrial and medical applications to passively separate particles by size using purely hydrodynamic effects. A fixed size particle in a circular duct with a uniform rectangular cross-section can have a variety of particle attractors, such as stable nodes/spirals or limit cycles, depending on the radius of curvature of the duct. Bifurcations occur at different radii of curvature, such as pitchfork, saddle-node and saddle-node infinite period (SNIPER), which result in variations in the location, number and nature of these particle attractors. By using a quasi-steady approximation, we extend the theoretical model of Harding <jats:italic>et al.</jats:italic> (<jats:italic>J. Fluid Mech.</jats:italic>, vol. 875, 2019, pp. 1–43) developed for the particle dynamics in circular ducts to spiral duct geometries with slowly varying curvature, and numerically explore the particle dynamics within. Bifurcations of particle attractors with respect to radius of curvature can be traversed within spiral ducts and give rise to a rich nonlinear particle dynamics and various types of tipping phenomena, such as bifurcation-induced tipping (B-tipping), rate-induced tipping (R-tipping) and a combination of both, which we explore in detail. We discuss implications of these unsteady dynamical behaviours for particle separation and propose novel mechanisms to separate particles by size in a non-equilibrium manner.","PeriodicalId":15853,"journal":{"name":"Journal of Fluid Mechanics","volume":"57 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207753","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}
引用次数: 0
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