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Numerical analysis of aerodynamic noise radiated from cross flow fan
CHEN Anbang, LI Song, HUANG Dongtao
《能源前沿(英文)》 2008年 第2卷 第4期 页码 443-447 doi: 10.1007/s11708-008-0063-9
关键词: predicted aerodynamic Williams-Hawkings calculated pressure aerodynamic performance unsteady Reynolds-averaged
URANS simulation of the turbulent flow in tight lattice bundle
Yiqi YU, Yanhua YANG
《能源前沿(英文)》 2011年 第5卷 第4期 页码 404-411 doi: 10.1007/s11708-011-0165-7
关键词: tight rod bundle flow structure unsteady Reynolds averaged Navier Stokes (URANS)
Optimum design of a channel roughened by dimples to improve cooling performance
Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,
《能源前沿(英文)》 2010年 第4卷 第2期 页码 262-268 doi: 10.1007/s11708-010-0012-2
关键词: Staggered three-dimensional Reynolds-averaged multi-objective optimization reference transfer
Numerical analysis of 3-D unsteady flow in a vaneless counter-rotating turbine
ZHAO Qingjun, WANG Huishe, ZHAO Xiaolu, XU Jianzhong
《能源前沿(英文)》 2007年 第1卷 第3期 页码 352-358 doi: 10.1007/s11708-007-0053-3
关键词: unsteady flow three-dimensional pressure distribution similar result unsteady simulation
Measurement and analysis of tip clearance unsteady flow spectrum in axial-flow fan rotor
LIU Bo, HOU Weimin, MA Changyou, WANG Yangang, ZHOU Qiang
《能源前沿(英文)》 2008年 第2卷 第4期 页码 448-452 doi: 10.1007/s11708-008-0088-0
关键词: development endwall unsteady pressure pressure measurement experiment
Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over
Krishnendu Bhattacharyya
《化学科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 376-384 doi: 10.1007/s11705-011-1121-0
关键词: MHD boundary layer unsteady flow heat transfer thermal radiation heat source/sink shrinking sheet suction/injection
Xiyan GUO, Yongping YANG
《能源前沿(英文)》 2011年 第5卷 第1期 页码 69-74 doi: 10.1007/s11708-010-0117-7
关键词: thermodynamic model energy distribution boiler unsteady conditions
Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model
Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG
《化学科学与工程前沿(英文)》 2010年 第4卷 第4期 页码 506-514 doi: 10.1007/s11705-010-0508-7
关键词: stirred tank fluid dynamics numerical simulation SSG Reynolds Stress Model MRF
Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG
《能源前沿(英文)》 2010年 第4卷 第4期 页码 546-552 doi: 10.1007/s11708-010-0116-8
关键词: convective heat transfer helical coils high Reynolds number supercritical pressure variable property
Study on wave rotor refrigerators
Yuqiang DAI, Dapeng HU, Meixia DING
《化学科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 83-87 doi: 10.1007/s11705-009-0075-y
关键词: wave rotor refrigeration unsteady flow theory wave diagram
通过一个等价雷诺数揭示层流到湍流的转捩区域 Article
陈晓东
《工程(英文)》 2019年 第5卷 第3期 页码 576-579 doi: 10.1016/j.eng.2018.09.013
Flow transition from laminar to turbulent mode (and vice versa)—that is, the initiation of turbulence—is one of the most important research subjects in the history of engineering. Even for pipe flow, predicting the onset of turbulence requires sophisticated instrumentation and/or direct numerical simulation, based on observing the instantaneous flow structure formation and evolution. In this work, a local Reynolds number equivalence γ (ratio of local inertia effect to viscous effect) is seen to conform to the Universal Law of the Wall, where γ = 1 represents a quantitative balance between the abovementioned two effects. This coincides with the wall layer thickness (y+ = 1, where y+ is the dimensionless distance from the wall surface defined in the Universal Law of the Wall). It is found that the characteristic of how the local derivative of γ against the local velocity changes with increasing velocity determines the onset of turbulence. For pipe flow, γ ≈ 25, and for plate flow, γ ≈ 151.5. These findings suggest that a certain combination of γ and velocity (nonlinearity) can qualify the source of turbulence (i.e., generate turbulent energy). Similarly, a re-evaluation of the previous findings reveals that only the geometrically narrow domain can act locally as the source of turbulence, with the rest of the flow field largely being left for transporting and dissipating. This understanding will have an impact on the future large-scale modeling of turbulence.
Iteration framework for solving mixed lubrication computation problems
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 635-648 doi: 10.1007/s11465-021-0632-8
关键词: mixed lubrication discretization formula relative error Reynolds equation asperity
How far have we been? ―Summary of investigations on rotating cavity at IDG, RWTH Aachen University
Dieter BOHN, Jing REN,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 489-497 doi: 10.1007/s11708-009-0040-y
Investigation of vortical flows over oscillating body using fast Lagrangian vortex method
Baoshan ZHU ,
《能源前沿(英文)》 2009年 第3卷 第3期 页码 297-306 doi: 10.1007/s11708-009-0010-4
关键词: unsteady vortical flows fast vortex method vortex shedding rotational oscillation thin cambered blade
Experiment and surge analysis of centrifugal two-stage turbocharging system
HE Yituan, MA Chaochen
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 365-368 doi: 10.1007/s11465-008-0073-7
关键词: auto-modeling compressor Reynolds number characteristic standard condition
标题 作者 时间 类型 操作
Numerical analysis of aerodynamic noise radiated from cross flow fan
CHEN Anbang, LI Song, HUANG Dongtao
期刊论文
Optimum design of a channel roughened by dimples to improve cooling performance
Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,
期刊论文
Numerical analysis of 3-D unsteady flow in a vaneless counter-rotating turbine
ZHAO Qingjun, WANG Huishe, ZHAO Xiaolu, XU Jianzhong
期刊论文
Measurement and analysis of tip clearance unsteady flow spectrum in axial-flow fan rotor
LIU Bo, HOU Weimin, MA Changyou, WANG Yangang, ZHOU Qiang
期刊论文
Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over
Krishnendu Bhattacharyya
期刊论文
Thermodynamic models and energy distribution of single-phase heated surface in a boiler under unsteady
Xiyan GUO, Yongping YANG
期刊论文
Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model
Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG
期刊论文
Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds
Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG
期刊论文
How far have we been? ―Summary of investigations on rotating cavity at IDG, RWTH Aachen University
Dieter BOHN, Jing REN,
期刊论文
Investigation of vortical flows over oscillating body using fast Lagrangian vortex method
Baoshan ZHU ,
期刊论文