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Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity
Zhaomiao LIU, Chengyin ZHANG, Feng SHEN
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 359-368 doi: 10.1007/s11465-011-0222-2
The flow, bearing, and carrying capacity of the cycloidal hydrostatic oil cavity in hydrostatic turntable systems are numerically simulated, considering the rotation speeds of a turntable from 0 to 5 m/s and different boundary conditions. The vortex effect is weakened, and the stability of the oil cavity is enhanced with the increase in lubricant viscosity. However, the increase in inlet speed, depth, and inlet radius of the oil cavity causes the vortex effect to increase and the stability of oil cavity to reduce. With the increase in the oil film thickness, the carrying capacity of the oil cavity diminishes. The oil cavity pressure increases along the direction of the motion of the turntable; it is distributed unevenly because of the rotation of the turntable. With the increase in turntable speed, the location and size of the vortex scope in the oil cavity flow field and the strength of the vortex near the entrance gradually weaken and move away from the entry. The distribution of pressure is determined by the locations of the vortex. When the vortex is close to the wall, the wall pressure increases at its location. Otherwise, the wall pressure decreases first and then increases after the center of the vortex.
关键词: hydrostatic oil cavity flow state oil cavity pressure stability vortex
Numerical study of internal flow field and flow passage improvement of an inlet particle separator
Florian PAOLI, Tong WANG
《能源前沿(英文)》 2011年 第5卷 第4期 页码 386-397 doi: 10.1007/s11708-011-0156-8
关键词: streamlines pressure losses flow passage improvement inlet particle separator (IPS)
Advances in tissue state recognition in spinal surgery: a review
Hao Qu, Yu Zhao
《医学前沿(英文)》 2021年 第15卷 第4期 页码 575-584 doi: 10.1007/s11684-020-0816-3
关键词: spinal surgery tissue state recognition image force sensing bioelectrical impedance
Effectiveness of state incentives for promoting wind energy: A panel data examination
Deepak SANGROYA,Jogendra NAYAK
《能源前沿(英文)》 2015年 第9卷 第3期 页码 247-258 doi: 10.1007/s11708-015-0364-8
关键词: India wind energy development state incentives econometric analysis panel data
Digital image correlation-based structural state detection through deep learning
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 45-56 doi: 10.1007/s11709-021-0777-x
关键词: structural state detection deep learning digital image correlation vibration signal steel frame
Biological pretreatment of corn stover by solid state fermentation of
Jian ZHANG, Xin REN, Wenqun CHEN, Jie BAO
《化学科学与工程前沿(英文)》 2012年 第6卷 第2期 页码 146-151 doi: 10.1007/s11705-012-1220-6
关键词:
biological pretreatment
陆钟武
《中国工程科学》 2006年 第8卷 第1期 页码 18-25
流动,是物质(如铜、铝等)流动和流体流动二者所具有的基本特征,基于这个论点,简要地回顾了流体力学中研究流体流动的两种方法,即拉格朗日法和欧拉法;相应地提出了物质流分析的两种方法,即跟踪观察法和定点观察法。由于前者在文献中未见报道,因此对它进行了重点说明。强调了物质流的跟踪观察法既适用于稳态物质流(产品产量不变),也适用于非稳态物质流(产品产量增长或下降)。以钢铁产品生命周期的铁流图为例,说明了物质流的跟踪模型。在引入了物质流的非稳度后,提出了物质流各项指标的计算式,以及它们之间的相互关系。以瑞典铅酸电池系统为对象,计算了其中铅流的各项指标,并进行了必要的分析。
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
《能源前沿(英文)》 2023年 第17卷 第1期 页码 165-175 doi: 10.1007/s11708-020-0686-z
关键词: active power loop flow (APLF) unified power flow controller (UPFC) wind power uncertainty interval power flow (IPF)
Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 365-378 doi: 10.1007/s11709-012-0178-2
关键词: constitutive model granular material rockfill plasticity disturbed state concept stress level
A novel flow electrode capacitive deionization device with spindle-shaped desalting chamber
《环境科学与工程前沿(英文)》 2023年 第18卷 第4期 doi: 10.1007/s11783-024-1800-y
● A spindle-shaped influent chamber was designed and equipped in FCDI system.
关键词: Spindle-shaped chamber Desalination performance Flow electrode capacitive deionization
《能源前沿(英文)》 doi: 10.1007/s11708-023-0891-7
关键词: machine learning lithium-ion battery state of health neural network artificial intelligence
Simulation of horizontal slug-flow pneumatic conveying with kinetic theory
GU Zhengmeng, GUO Liejin
《能源前沿(英文)》 2007年 第1卷 第3期 页码 336-340 doi: 10.1007/s11708-007-0050-6
关键词: velocity distribution detailed slug-flow gas-solid theory
《化学科学与工程前沿(英文)》 2023年 第17卷 第9期 页码 1221-1230 doi: 10.1007/s11705-023-2298-8
关键词: vanadium redox flow battery functional groups organic additives energy density stability
Firm Innovation Systems: Perspectives of Researches on State-owned Key Enterprises
Jin Chen,Shu-fang Huang,Qing-rui Xu
《工程管理前沿(英文)》 2015年 第2卷 第1期 页码 64-70 doi: 10.15302/J-FEM-2015017
关键词: firm innovation system state-owned key enterprises ecology evolution
Modeling and analysis of steady-state vibration induced by backlash in servo rotary table
Xiao YANG,Dun LU,Sanli LIU,Jun ZHANG,Wanhua ZHAO
《机械工程前沿(英文)》 2015年 第10卷 第1期 页码 43-47 doi: 10.1007/s11465-015-0327-0
Backlash cannot be always avoided in mechanical systems because of wear or looseness. Steady-state vibration may be induced by backlash in closed loop feed drive systems. This paper presents a mathematical model of a servo rotary table, considering the effect of backlash. The accuracy of this model is verified by an experiment. The influences of the parameters, such as position controller gain, velocity controller gain, load and the magnitude of backlash, on steady-state vibration are discussed. The steady-state vibration amplitude increases with the position controller gain, load and the magnitude of backlash. The steady-state vibration frequency increases with the position controller gain and the velocity controller gain, while an increase in load leads to a decrease in the frequency.
标题 作者 时间 类型 操作
Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity
Zhaomiao LIU, Chengyin ZHANG, Feng SHEN
期刊论文
Numerical study of internal flow field and flow passage improvement of an inlet particle separator
Florian PAOLI, Tong WANG
期刊论文
Effectiveness of state incentives for promoting wind energy: A panel data examination
Deepak SANGROYA,Jogendra NAYAK
期刊论文
Biological pretreatment of corn stover by solid state fermentation of
Jian ZHANG, Xin REN, Wenqun CHEN, Jie BAO
期刊论文
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
期刊论文
Development of a constitutive model for rockfills and similar granular materials based on the disturbed state
Mehdi VEISKARAMI, Ali GHORBANI, Mohammadreza ALAVIPOUR
期刊论文
Machine learning and neural network supported state of health simulation and forecasting model for lithium-ion
期刊论文
Simulation of horizontal slug-flow pneumatic conveying with kinetic theory
GU Zhengmeng, GUO Liejin
期刊论文
Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium redox flow
期刊论文
Firm Innovation Systems: Perspectives of Researches on State-owned Key Enterprises
Jin Chen,Shu-fang Huang,Qing-rui Xu
期刊论文