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NUMERICAL: 作品数：1547被引量：3932H指数：19; 导出分析报告; 相关领域：理学更多>>; 相关作者：王文均张明福刘洋韩杰才闫润泽更多>>; 相关机构：北京航空航天大学上海交通大学清华大学天津大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

Numerical and analytical models for prediction of the local scour under pipelines: 《Journal of Hydrodynamics》2024年第6期1130-1141,共12页Andrey Epikhin Igor Potapov Aleksandr Petrov Aleksandr Kukharskii; supported by the Russian Science Foundation(Grant No.23-71-10091).; This paper considers local scour around a pipeline under turbulent flow.The Navier-Stokes equations are solved with a shear stress turbulence model.The original bed deformation equation based on an analytical sediment...; 关键词：Pipelines numerical simulation sediment transport SCOUR HYDRODYNAMICS self-similar behavior OPENFOAM

A numerical study of hydrodynamic influence on collision of brash ice with a structural plate被引量：3: 《Journal of Hydrodynamics》2022年第1期43-51,共9页Li Zhou Zhi Zong Jia-nan Li; supported by the Major Project of National Natural Science Foundation of China(Grant No.52192692);the National Natural Science Foundation of China(Grant No.52171294).; The ice-structure collision is a transient process, which is further complicated by the presence of the water. It remains unclear how important the hydrodynamic influences are during the collision. This problem is par...; 关键词：Ice-structure collision hydrodynamic influence NUMERICAL rigid mode elastic mode

Simulations of helicopter ditching using smoothed particle hydrodynamics被引量：3: 《Journal of Hydrodynamics》2020年第4期653-663,共11页G.Oger A.Vergnaud B.Bouscasse J.Ohana M.Abu Zarim M.De Leffe A.Bannier L.Chiron Y.Jus M.Gamier S.Halbout D.Le Touze; Supported by the European Union Horizon 2020 Research and Innovation Program(Grant No.724139);The authors thank the Pole de Calcul et de Donnees Marines(PCDM)for providing DATARMOR storage and computational resources(http://www.ifremer.fr/pcdm),and the Institut de Calcul Intensif(ICI)(Grant No.2018-P1804060).; The present work has been performed in the context of the European H2020 project increased SAfety and Robust certification for ditching of Aircrafts and Helicopters(SARAH)dedicated to improving the safety during aircr...; 关键词：Helicopter ditching smoothed particle hydrodynamics(SPH) Free surface impact wave impact numerical vs experimental solutions

Liutex (vortex) core definition and automatic identification for turbulence vortex structures被引量：22: 《Journal of Hydrodynamics》2019年第5期857-863,共7页Hongyi Xu Xiao-shu Cai Chaoqun Liu; As a milestone research in vortex identification(VI),the physical quantity of Liutex,including its forms of scalar,vector and tensor,was systematically explored and rigorously obtained as the third-generation(3G)of th...; 关键词：Direct NUMERICAL simulation TURBULENCE structure VORTEX CORE identification and AUTOMATION

Analysis and correlation of fluid acceleration with vorticity and Liutex(Rortex)in swirling jets被引量：5: 《Journal of Hydrodynamics》2019年第5期864-872,共9页Nan Gui Hou-bo Qi Liang Ge Peng-Xin Cheng Hao Wu Xing-tuan Yang Ji-yuan Tu Sheng-yao Jiang; Project supported by the National Natural Science Foundations of China(Grant No.51576211);the Science Fund for Creative Research Groups of National Natural Science Foundation of China(Grant No.51621062);the National High Technology Research and Development Program of China(863 Program,Grant No.2014AA052701);the Foundation for the Author of National Excellent Doctoral Dissertation of China(FANEDD,Grant No.201438).; The characteristics of the acceleration a and its correlation with the vortex core in the swirling flow are analyzed in this paper.The swirling flows of four swirl numbers(Sn=n S 0,0.10,0.20 and 0.36)are simulated by ...; 关键词：swirling flow ACCELERATION correlation VORTEX Rortex Liutex direct NUMERICAL simulation

Evaluation of the hemolysis and fluid dynamics of a ventricular assist device under the pulsatile flow condition被引量：1: 《Journal of Hydrodynamics》2019年第5期965-975,共11页Huan Li Zhe Gou Feng Huang Xiao-dong Ruan Wen-wei Qian Xin Fu; Project supported by the National Natural Science Foundation of China(Grant No.51505455);the Science Fund for Creative Research Groups of the National Natural Science Foundation of China(Grant No.51221004).; When the rotary blood pumps are used as ventricular assist devices,the pump flow rate will have a pulsatile component even at a constant impeller rotational speed due to the remaining beating of the natural heart.Howe...; 关键词：VENTRICULAR assist DEVICES HEMOLYSIS PULSATILE flow CARDIOVASCULAR system NUMERICAL simulation

A numerical piston-type wave-maker toolbox for the open-source library OpenFOAM被引量：5: 《Journal of Hydrodynamics》2019年第4期800-813,共14页Dong-xu Wang Jia-wen Sun Jin-song Gui Zhe Ma De-zhi Ning Ke-zhao Fang; Project supported by the National Natural Science Foundation of China (Grant No. 51579034;the Public Science and Technology Research Funds Projects of Ocean (Grant No. 201405025).; A novel numerical piston-type wave-maker toolbox for the OpenFOAM is developed and demonstrated in this paper. This toolbox is implemented in C++ for improving the solutions of nonlinear wave problems in the field of ...; 关键词：Piston-type wave-maker OPENFOAM nonlinear wave HYDRODYNAMICS

Comparative assessment and analysis of Rortex vortex in swirling jets被引量：5: 《Journal of Hydrodynamics》2019年第3期495-503,共9页Nan Gui Liang Ge Peng-xin Cheng Xing-tuan Yang Ji-yuan Tu Sheng-yao Jiang; National Natural Science Foundations of China(Grant No.51576211);the Science Fund for Creative Research Groups of National Natural Science Foundation of China(Grant No.51621062);the National High Technology Research and Development Program of China(863 Program,Grant No.2014AA052701);the Foundation for the Author of National Excellent Doctoral Dissertation of China(FANEDD,Grant No.201438).; Recently, a new definition, called Rortex, was proposed to quantify the purely rotational motion of fluids. In this work, based on the DNS data, the Rortex is used to assess and visualize the rotational motion and str...; 关键词：Swirling flow VORTEX Rortex direct NUMERICAL simulation RIGID ROTATION non-rotational SHEAR

Third generation of vortex identification methods:Omega and Liutex/Rortex based systems被引量：99: 《Journal of Hydrodynamics》2019年第2期205-223,共19页Chaoqun Liu Yi-sheng Gao Xiang-rui Dong Yi-qian Wang Jian-ming Liu Yu-ning Zhang Xiao-shu Cai Nan Gui; A vortex is intuitively recognized as the rotational/swirling motion of fluids,but a rigorous and universally-accepted definition is still not available.Vorticity tube/filament has been regarded equivalent to a vortex...; 关键词：VORTEX DEFINITION VORTEX identification OMEGA Liutex/Rortex direct NUMERICAL simulation TURBULENCE

Direct numerical simulation of the viscoelastic channel flow using Giesekus model with variable parameters: 《Journal of Hydrodynamics》2019年第2期326-332,共7页Wei-guo Gu Yu Li De-zhong Wang; by National Natural Science Foundation of China(Grant Nos.51106095,11575113).; The paper presents a direct numerical simulation(DNS)for the drag-reducing channel flow using the Giesekus model with variable parameters.It is assumed that the relaxation time in the constitutive equation is varied d...; 关键词：VISCOELASTIC FLUID Giesekus model direct NUMERICAL simulation(DNS) VARIABLE parameters

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