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ENSTROPHY: 作品数：21被引量：18H指数：3; 导出分析报告; 相关领域：理学天文地球更多>>; 相关期刊：《Journal of Ocean University of China》《Journal of Meteorological Research》《Applied Mathematics and Mechanics(English Edition)》《Journal of Hydrodynamics》更多>>; 相关基金：国家自然科学基金中国博士后科学基金国家重点基础研究发展计划国家教育部博士点基金更多>>

Physical structures of boundary fluxes of orbital rotation and spin for incompressible viscous flow: 《Applied Mathematics and Mechanics(English Edition)》2025年第4期745-762,共18页Tao CHEN Tianshu LIU; Project supported by the National Natural Science Foundation of China(No.12402262)。; Vorticity is locally generated on a boundary at a rate measured by the boundary vorticity flux(BVF),which can be further decomposed into the sum of the orbital rotation and the generalized spin(specifically,the sum of...; 关键词：boundary vorticity flux(BVF) orbital rotation SPIN boundary enstrophy dynamics Lyman vorticity dynamics

Numerical investigation on compressible flow around a cylinder in proximity to the heated wall被引量：1: 《Journal of Hydrodynamics》2024年第3期519-533,共15页Yu-lu Liu Jun-wang Qu Yi-zhou Tao Yong-guang Lyu Xiang Qiu; supported by the National Natural Science Foundation of China(Grant Nos.12032016,12372277).; In this study,direct numerical simulations were conducted to investigate the compressible flow around a circular cylinder near a heated wall at a Reynolds number(Re)of 500 and a Mach number(Ma)of 0.4.The heating ratio...; 关键词：Compressible flow wall proximity heating effect stability ENSTROPHY

Can lift be generated in a steady inviscid flow?被引量：1: 《Advances in Aerodynamics》2023年第1期108-125,共18页Tianshu Liu; This paper presents a critical evaluation of the physical aspects of lift generation to prove that no lift can be generated in a steady inviscid flow.Hence,the answer to the recurring question in the paper title is ne...; 关键词：LIFT Drag Airfoil Circulation Viscosity VORTICITY Vortex Lamb vector Vortex lift Boundary enstrophy flux D’Alembert’s paradox Kutta-Joukowski theorem Kutta condition Variational formulation

Reconstruction of skin friction topology in complex separated flows: 《Advances in Aerodynamics》2023年第1期579-613,共35页Tianshu Liu; This paper describes a theoretical method for reconstruction of the skin friction topology in complex separated flows,which is developed based on the exact relation between skin friction and surface pressure through t...; 关键词：Skin friction Surface pressure Boundary enstrophy flux Flow separation TOPOLOGY Inverse problem Variational method Euler-Lagrange equation Taylor-series-expansion solution Navier-Stokes equations Poincare-Bendixson index formula Shock-wave/boundary-layer interaction Pressure sensitive paint Aerodynamics

Investigation on the relationship between hydraulic loss and vortex evolution in pump mode of a pump-turbine被引量：6: 《Journal of Hydrodynamics》2022年第4期555-569,共15页Yong-lin Qin De-you Li Hong-jie Wang Zhan-sheng Liu Xian-zhu Wei Xiao-hang Wang; the National Natural Science Foundation of China(Grant No.51876047);the China Postdoctoral Science Foundation Funded Projection(Grant No.2018M630353);the Industrial Prospect and Key Core Technology of Jiangsu Province(Grant No.BE2019009-1).; Hydraulic loss and vorticity are two most common methods in analyzing the flow characteristics in hydro-machine,i.e.,centrifugal pump,Francis turbine,etc.While the relationship and correlation between hydraulic loss a...; 关键词：Hydraulic loss ENSTROPHY vorticity transportation pearson correlation coefficient

Effects of Lewis and Karlovitz numbers on transport equations for turbulent kinetic energy and enstrophy: 《Acta Mechanica Sinica》2022年第7期29-44,I0001,共17页Hsu-Chew Lee Xiaoyu Liu Peng Dai Zheng Chen Abouelmagd Abdelsamie Minping Wan; supported by the National Natural Science Foundation of China(Grant Nos.91752201 and 11672123);Shenzhen Science and Technology Program(Grant Nos.JCYJ20170412151759222,JCYJ20180302173952945,and KQTD20180411143441009);Department of Science and Technology of Guangdong Province(Grant No.2019B21203001);Project No.LCH-2019011 under the Joint Program of Shenzhen Clean Energy Research Institute and SUSTech through contract CERI-KY-2019-003.; A three-dimensional Direct numerical simulation(DNS)with complex chemistry was employed to examine the statistical behavior of turbulent kinetic energy(TKE)and enstrophy transport equations in hydrogen(Lewis number(Le...; 关键词：Direct numerical simulations Turbulent premixed flames Lewis number Complex chemistry

Evolutionary understanding of airfoil lift被引量：3: 《Advances in Aerodynamics》2021年第1期649-672,共24页Tianshu Liu; This review attempts to elucidate the physical origin of aerodynamic lift of an airfoil using simple formulations and notations,particularly focusing on the critical effect of the fluid viscosity.The evolutionary deve...; 关键词：LIFT Drag AIRFOIL Circulation Kutta condition Taylor-Sears condition Viscosity Boundary layer VORTICITY Vortex Lamb vector Boundary enstrophy flux

Hurricane Florence Makes Landfall in the Southeast USA: Sensitive Dependence on Initial Conditions, Parameterizations, and Integrated Enstrophy被引量：1: 《Atmospheric and Climate Sciences》2020年第2期101-124,共24页Sarah S. Balkissoon Jonathan T. Bongard Thomas Cain Dominic M. Candela Corey Clay Bahtiyar Efe Qiuping Ji Emily M. Klaus Alex P. Korner Kenna Mitchell Jane M. Niemeyer Jordan L. Rabinowitz Samuel P. Ritter Katherine Rojas Paula Sumrall Patrick S. Market Anthony R. Lupo; The overall purpose of this paper is to post-evaluate the predictability of Hurricane Florence using the Advanced Research Weather Research Forecast (WRF) (ARW) version of a mesoscale model. This was performed over th...; 关键词：Predictability Model Behavior INTEGRATED Entrophy Precipitation Tropical Cyclone

PULLBACK EXPONENTIAL ATTRACTORS FOR THE NON-AUTONOMOUS MICROPOLAR FLUID FLOWS: 《Acta Mathematica Scientia》2018年第4期1370-1392,共23页Wenlong SUN Yeping LI; partially supported by the Natural Science Foundation of China(11671134); This paper investigates the pullback asymptotic behaviors for the non-autonomous micropolar fluid flows in 2D bounded domains. We use the energy method, combining with some important properties of the generated proces...; 关键词：micropolar fluid flow pullback exponential attractor global pullback attractor fractal dimension enstrophy equality

Evaluation of the Momentum Closure Schemes in MPAS-Ocean: 《Journal of Ocean University of China》2018年第2期227-243,共17页ZHAO Shimei LIU Yudi LIU Wei; sponsored by the National Natural Science Foundation of China Program (No.41175089); In order to compare and evaluate the performances of the Laplacian viscosity closure, the biharmonic viscosity closure, and the Leith closure momentum schemes in the MPAS-Ocean model, a variety of physical quantities,...; 关键词：3D BAROCLINIC eddy MOMENTUM closure grid REYNOLDS number the reference potential energy(RPE) BAROCLINIC adjustment kinetic ENERGY ENSTROPHY

ENSTROPHY