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Journal of Hydrodynamics 2013年第1期25卷 27-38页

作者： zeng xiao-hui TANG Si-yi Institute of Mechanics Chinese Academy of Sciences

An analytical method based on the eigenfunction expansion and the Graf＇s addition theorem for Bessel functions is developed to study the hydrodynamic interactions of an array of truncated circular cylinders with each cylinder oscillating independently in different prescribed modes. The hydrodynamic radiation and diffraction of linear waves by such an array of cylinders are investigated and the analytical solutions of the velocity potentials are obtained. After comparisons for degenerated cases and program verifications, several cases for an array of truncated cylinders with each cylinder oscillating independently in surge, sway, heave, roll, and pitch modes with different prescribed amplitudes, are studied and the hydrodynamic forces and moments acting on the cylinders are obtained.

关键词： array of truncated circular cylinders independent oscillation radiation hydrodynamic interaction

The Re-occurrence and Reconstruction of History in Ian McEwan’s Machines Like Me

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Journal of Literature and Art Studies 2022年第11期12卷 1127-1132页

作者： zeng xiao-hui University of Shanghai for Science and Technology ShanghaiChina

Ian McEwan’s Machines Like Me,published in 2019,depicts the parallel world of London in 1982,when artificial intelligence field was well beyond our current level of *** Britain’s defeat in the Falklands War,Tony Benn was elected Prime *** Alan Turing,the father of artificial intelligence,did not commit *** storyline is full of intertextual expressions,with the setting beyond the British Isles and the narrative structure abandoning the coherence in the traditional novel in favour of a fragmented feature that closely integrates the individual with the society and the *** paper analyses McEwan’s textual presentation of Britain’s post-World War II history from three perspectives:textual truth,historical fiction,and historical reflection,in the context of the New Historicism,and explores how McEwan approaches the deconstruction of power discourses and *** paper aims to achieve reflection on the past,concern for the present and early warning for the future under textuality of histories and historicity of text.

关键词： new historicism Machines Like Me textual truth historical fiction

NONLINEAR FLUID DAMPING IN STRUCTURE-WAKE OSCILLATORS IN MODELING VORTEX-INDUCED VIBRATIONS

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Journal of Hydrodynamics 2009年第1期21卷 1-11页

作者： LIN Li-ming LING Guo-can WU Ying-xiang zeng xiao-hui Division of Engineering Sciences Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China The State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

A Nonlinear Fluid Damping （NFD） in the form of the square-velocity is applied in the response analysis of Vortex-Induced Vibrations （VIV）. Its nonlinear hydrodynamic effects on the coupled wake and structure oscillators are investigated. A comparison between the coupled systems with the linear and nonlinear fluid dampings and experiments shows that the NFD model can well describe response characteristics, such as the amplification of body displacement at lock-in and frequency lock-in, both at high and low mass ratios. Particularly, the predicted peak amplitude of the body in the Griffin plot is in good agreement with experimental data and empirical equation, indicating the significant effect of the NFD on the structure motion.

关键词： Vortex-Induced Vibration (VIV) Nonlinear Fluid Damping (NFD) wake oscillator

A NEW WAKE OSCILLATOR MODEL FOR PREDICTING VORTEX INDUCED VIBRATION OF A CIRCULAR CYLINDER

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Journal of Hydrodynamics 2010年第3期22卷 381-386页

作者： XU Wan-hai WU Ying-xiang, zeng xiao-hui ZHONG Xing-fu YU Jian-xing Key Laboratory of Port and Ocean Engineering Tianjin University Tianjin 300072 China Key Laboratory for Hydrodynamics and Ocean Engineering Institute of Mechanics Chinese Academy ofSciences Beijing 100190 China Key Laboratory of Port and Ocean Engineering Tianjin University Tianjin 300072 China

This article proposes a new wake oscillator model for vortex induced vibrations of an elastically supported rigid circular cylinder in a uniform current. The near wake dynamics related with the fluctuating nature of vortex shedding is modeled based on the classical van der Pol equation, combined with the equation for the oscillatory motion of the body. An appropriate approach is developed to estimate the empirical parameters in the wake oscillator model. The present predicted results are compared to the experimental data and previous wake oscillator model results. Good agreement with experimental results is found.

关键词： vortex induced vibration wake oscillator model circular cylinder van der Pol equation

An Interpretation of Multi-pole Sonic Logging Data Mining Based on Rough Sets

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通讯和计算机（中英文版） 2007年第1期4卷 8-10页

作者： zeng xiao-hui SHI Yi-bing LIAN Yi Department of Communication Chengdu University of Information Technology Chengdu 610225 China School of Automation Engineering University of Electronic Science and Technology of China Chengdu 610054 China Department of Communication Chengdu Electromechanical College Chengdu 610031 China

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高坝洲溢流坝表孔液压启闭机设计

人民长江 2001年第6期32卷 14-15,25页

作者：方杨曾晓辉长江水利委员会设计院湖北武汉430010

高坝洲水利枢纽表孔弧形闸门采用双吊点液压启闭机操作。溢流孔口宽度较大 ,弧形闸门的启闭过程中双吊点的同步运行控制精度要求较高。根据表孔溢流坝段的布置特点以及启闭机的运行特点 ,在液压控制系统中采用高精度的比例 (伺服 )电磁... 详细信息

高坝洲水利枢纽表孔弧形闸门采用双吊点液压启闭机操作。溢流孔口宽度较大 ,弧形闸门的启闭过程中双吊点的同步运行控制精度要求较高。根据表孔溢流坝段的布置特点以及启闭机的运行特点 ,在液压控制系统中采用高精度的比例 (伺服 )电磁方向阀同步闭环控制、活塞杆防压保护以及安全保护等措施。通过优化设计 ,使该液压启闭机具有系统精度高 ,安全可靠 ,操作简单等特点。对整个设计作了详细介绍 ,可供其它类似工程借鉴。

关键词：液压启闭机弧形闸门表孔设计特点高坝洲水利枢纽

Experimental Study on Geometry Characteristics of Turbulent Premixed Flames for Natural Gas/Air Mixtures

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Journal of Thermal Science 2025年第1期34卷 268-282页

作者： ZHENG Weilin WANG Qijiao xiao Huahua CHEN xiaoxiao XIE Fan zeng Wen Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System Shenyang Aerospace University State Key Laboratory of Fire Science University of science and Technology of China AVIC Shenyang Aircraft Design and Research Institute

In this study,focusing on the geometry characteristics of spherical expanding flame,the turbulent premixed flames of natural gas/air mixtures were investigated in a fan-stirred turbulent *** effects of initial temperature（T=300-400 K）,initial pressure（P=0.1-0.3 MPa）,turbulence intensity（u'=1.0-2.7 m/s）,oxygen volumetric percentage(φ（O2）=15%-21%) and carbon dioxide volumetric percentage(φ（CO2）=0-20%)were delved *** flame profile under the Cartesian coordinate system was derived from the schlieren images taken by the high-speed ***,from both macroscopic and microscopic perspectives,the influence of experimental conditions on the flame geometry characteristics was explored through flame front extraction,wavelet decomposition and network *** results demonstrate that for significant flame wrinkling,changes in species concentrations and turbulence intensity have more pronounced effects on the flame wrinkling *** wrinkling of the flame front maintains a certain degree of similarity,as evidenced by the locally concentrated distribution of the angles of the maximum fluctuation *** disturbance energy under large-scale（D6-D8） disturbances exhibits relatively high values with a similar trend,exerting a significant impact on the geometry characteristics of the flame *** peaks of correlation degree are scattered either with the decomposition scale or the development of flame radius,indicating no linear correlation between different detail ***,the probability distribution of node degrees in key wrinkled regions exhibits different trends with that of large-scale wrinkling and disturbance energy,especially with changes in initial *** occurs because the number of key wrinkles varies based on the perturbation's strength or the region's ***,an increase in the fluctuation frequency of the flame's local radius may not necessarily lead to an increase in the number of key folded regions.

关键词： fan-stirred turbulent combustor geometry characteristics large-scale wrinkling network topology wavelet decomposition

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水泥乳化沥青砂浆力学性能的能量机制

华南理工大学学报（自然科学版） 2014年第6期42卷 107-113页

作者：傅强谢友均曾晓辉中南大学土木工程学院湖南长沙410075 西南交通大学土木工程学院四川成都610031

研究了CRTS I型水泥乳化沥青砂浆(CA砂浆)在不同应变率加载条件下的总应变能、耗散应变能和弹性应变能的演变规律,结果表明:应变率越大,CA砂浆内部积聚的弹性应变能越多,峰值应力越大;弹性应变能在峰值应力前大量积聚,之后不断释放转化... 详细信息

研究了CRTS I型水泥乳化沥青砂浆(CA砂浆)在不同应变率加载条件下的总应变能、耗散应变能和弹性应变能的演变规律,结果表明:应变率越大,CA砂浆内部积聚的弹性应变能越多,峰值应力越大;弹性应变能在峰值应力前大量积聚,之后不断释放转化为破裂面贯通的表面能;应变率越大,弹性应变能占总应变能的比例(We/W)减小的幅度越小,但弹性应变能的释放量越大,释放的速率也越高,CA砂浆强度衰减越快,脆性越明显;耗散应变能随应变增大而不断增加,耗散应变能主要以裂纹的扩展与错位摩擦的方式产生;应变率越大,CA砂浆内部产生的细小裂纹越多,裂纹的扩展受到变形速率的限制,耗散应变能占总应变能的比例(Wd/W)越小.

关键词：水泥乳化沥青砂浆应变率峰值应力弹性应变能耗散应变能

降低劳动报酬是“降成本”的合理有效手段吗?

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现代财经（天津财经大学学报） 2017年第12期37卷 97-109页

作者：战岐林曾小慧山东工商学院经济学院山东烟台264005

在"降成本"的背景下,降低劳动报酬是不是"降成本"的合理有效手段?基于1995-2011年41个经济体的投入产出数据和经济社会核算数据进行计算和国际比较,发现了中国经济之中的数量扩张型技术进步(QETP)。QETP的推论认为中国的劳动报酬份额取... 详细信息

在"降成本"的背景下,降低劳动报酬是不是"降成本"的合理有效手段?基于1995-2011年41个经济体的投入产出数据和经济社会核算数据进行计算和国际比较,发现了中国经济之中的数量扩张型技术进步(QETP)。QETP的推论认为中国的劳动报酬份额取决于劳资双方议价能力,而非要素边际贡献;如果劳动的议价能力受到抑制,企业会扩张数量,而非提升质量和效益。本文丰富了中国的经济理论,有助于解决中国的劳动报酬和增加值率偏低问题,从而提升国家的经济质量和效益。

关键词：劳动报酬份额降成本数量扩张型技术进步增加值率

Metabolic syndrome in patients with atrial fibrillation in the absence of structural heart disease from a tertiary hospital in China

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Chinese Medical Journal 2009年第22期122卷 2744-2747页

作者： TANG Ri-bo GAO Ling-yun DONG Jian-zeng LIU xiao-hui LIU Xing-peng WU Jia-hui LONG De-yong YU Rong-hui DU Xin MA Chang-sheng Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing 100029 China

Background Metabolic syndrome （MetS） and atrial fibrillation （AF） are causally related. This study aimed to determine the prevalence of MetS in patients with AF in the absence of structural heart disease from a tertiary hospital in China. Methods In a single center, 741 inpatients with AF in the absence of structural heart disease prior to catheter ablation were retrospectively reviewed. Among them, 588 （79.4%） patients had paroxysmal AF. Subgroup analyses were performed in paroxysmal AF and persistent/permanent AF.Results MetS was found in 343 （46.3%） patients （200 males, 143 females）; 0, 1, 2, 3, 4, 5 components of the MetS were found in 59 （8.0%）, 140 （18.9%）, 199 （26.9%）, 203 （27.4%）, 103 （13.9%） and 37 （5.0%） patients, respectively. The prevalences of overweight/obesity, high blood pressure, high glucose level, high triglyceride level and low high density lipoproteins cholesterol level were 53.8%, 47.6%, 23.2%, 40.6% and 72.1%, respectively. The prevalence of MetS was not significantly different between the paroxysmal AF group and the persistent/permanent AF group （44.6% vs 52.9%, P=0.064）. The five components of MetS except overweight/obesity （69.3% vs 49.8%, P 〈0.001） were not significantly different between the aforementioned two groups. The left atrium diameter increased with the sum of the MetS components. The left atrium diameter in the MetS group was significantly higher than that in the non-MetS group both in patients with paroxysmal AF and in patients with persistent/permanent AF.Conclusions The prevalence of MetS in patients with AF prior to catheter ablation is high. Further study and prevention are needed.

关键词： metabolic syndrome atrial fibrillation catheter ablation