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Experimental Study on Conversion Characteristics of Dual-Mode OWC Models Appropriate for Voyaging

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China Ocean Engineering 2023年第2期37卷 247-257页

作者： WU Bi-jun zhang fu-ming QIN Zi-zhen WU Heng-yu RAO Xiang Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Key Laboratory of Renewable Energy CASGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China South China Normal University Guangzhou 510631China University of Science and Technology of China Hefei 230026China

Freely movable wave energy converters(WECs) will greatly improve their adaptability to the marine *** this paper, a dual-mode oscillating water column(OWC) WEC with potential sailing capability is proposed. By opening and closing a gate on the side facing the waves, the WEC converts wave energy in the vertical duct(called VD mode) with low sailing resistance or in the backward bend duct(called BBD mode) with high sailing resistance.A small model and a medium model were designed and manufactured. The capture width ratio(CWR) of the small model in the two modes was experimentally studied. The CWR under bidirectional airflow and conversion characteristics under unidirectional airflow of the medium model in the BBD mode were obtained. Tests of the small model show that the peak CWR is 145.2% under regular waves and 90.1% under random waves in BBD mode, and in VD mode the peak CWR is about 60% of that in the BBD mode. Tests of the medium model show that the peak CWR is 228.96% under regular waves, the maximum wave-to-battery efficiency is 63.36% under regular waves and 30.17%under random waves, respectively.

关键词： wave energy oscillating water column(OWC) capture width ratio(CWR) wave-to-battery conversion efficiency

Study on Inclusions in Large Sapphire Optical Crystal Grown by SAPMAC Method

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Chinese Journal of Aeronautics 2006年第B12期19卷 31-35页

作者： WANG Gui-gen zhang ming-fu ZUO Hong-bo HE Xiao-dong HAN Jie-cai Center for Composite Structure Harbin Instime of Technology Harbin 150080 China

The sapphire （Al2O3） single crystal is a kind of excellent infrared transmission window materials. A large-sized sapphire （Ф225 mm×205 mm, 27.5 kg） was grown by SAPMAC method （sapphire growth technique with micro-pulling and shoulder-expanding at cooled center）. Several kinds of inclusion in the large sapphire crystal were investigated by means of an optical microscopy （OM）, scanning electron microscopy （SEM） and electron probe microanalysis （EPMA）. The experimental results show that most inclusions are consisted of solid metallic and non-metallic particles as well as gas pores caused by the impurity of alumina as the raw material, the thermal dissociation of aluminum oxide melt and the reaction of the melt to the crucible material （Mo） at high temperatures. It is also found that in different crystal regions the inclusions are of varied sizes, morphology and chemical compositions. Finally, the measures to reduce and eliminate the inclusions are proposed to improve the crystal quality.

关键词： sapphire single crystal inclusions bubbles SAPMAC method

Optical Temperature Sensor Using Infrared-to-Visible-Frequency Upconversion in Er ^(3+)/Yb ^(3+)−Codoped Bi3TiNbO9 Ceramics

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Chinese Physics Letters 2011年第8期28卷 311-313页

作者： CHEN Heng-Zhi YANG Bin SUN Yan zhang ming-fu WANG Zhu zhang Rui zhang Zhi-Guo CAO Wen-Wu Center for Condensed Matter Science and Technology Department of PhysicsHarbin Institute of TechnologyHarbin 150001 Center for Composite Materials Harbin Institute of TechnologyHarbin 150001 Materials Research Institute The Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA

An optical temperature sensor based on infrared-to-visible upconversion emission in Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbØ9(BTN)ceramics is *** fluorescence intensity ratio of the green upconversion photoluminescence(UC−PL)around 524 nm and 545 nm depends on *** operating temperature range and the maximum sensitivity of Er ^(3+)/Yb ^(3+)co−doped Bi_(3)TiNbO_(9) ceramics are 123–693 K and 0.0032 K^(−1),***:Er3+/Yb3+ceramic has good thermal,physical and chemical stability,great UC−PL intensity and low cost *** results imply that Er ^(3+)/Yb ^(3+)co−doped Bi3TiNbO9 ceramic is promising for applications in wide-temperature-range sensors.

关键词： ceramics ceramic temperature

Study on the Anisotropy of Meniscus in the Growing Sapphire

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Chinese Journal of Aeronautics 2006年第B12期19卷 78-81页

作者： YAO Tai ZUO Hong-bo HANJie-cai MENG Song-he zhang ming-fu LI Chang-qing Grigoryan Benik Center for Composite Materials Harbin Institute of Technology Harbin 150006 China

This study is aimed at predicting the relationship between the meniscus and the quality of the sapphire crystals produced by the micro-pulling and shoulder at cooled center （SAPMIC） technique. As with different orientations, the shapes of the meniscus vary, so an investigation into the anisotropy of the meniscus shapes is very important for the final quality of the sapphire crystal. An effective model to describe meniscus shapes and their formation process has been presented. The model has been applied to a sapphire crystal of 200 mm diameter in order to check its reliability. The results show that the model proves to be useful for forecasting the final shapes of the sapphire crystal made by the SAPMIC technique.

关键词： anisotropy meniscus simulation sapphire

Construction of High-Efficiency and Low-Cost Clean Steel Production System in Shougang Jingtang

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Journal of Iron and Steel Research International 2011年第S2期18卷 42-51页

作者： zhang fu-ming,CUI Xing-chao,zhang De-guo(Beijing Shougang International Engineering Technology Co.,Ltd.,Beijing 100043,China) Beijing Shougang Int Engn Technol Co Ltd Beijing 100043 Peoples R China

This paper analyzes the technology for clean steel production in modern iron and steel plant,a philosophy with production efficiency,manufacturing cost and product performance in its *** also makes a review on functions of high-efficiency,low-cost and high-quality steel products manufactured by the new generation iron and steel plant,in combination with the study on design of steelmaking-continuous casting process of Shougang Jingtang iron and steel *** applying precise and dynamic design system to optimize and allocate systems and working procedures of hot metal pretreatment,converter smelting,secondary refining,continuous casting process,etc,a platform of high-efficiency,low-cost and high-quality clean steel production is built.

关键词： steelmaking continuous casting clean steel hot metal pretreatment secondary refining

A New Matlab De-noising Algorithm for Signal Extraction

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International Journal of Plant Engineering and Management 2007年第1期12卷 18-23页

作者： zhang fu-ming WU Song-lin Institute of Engineering Air Force Engineering University Xi＇an 710038 P. R. China

The goal of a de-noising algorithm is to reconstruct a signal from its noise-corrupted observations. Perfect reconstruction is seldom possible and performance is measured under a given fidelity criterion. In a recent work, the authors addressed a new Matlab algorithm for de-noising. A key method of the algorithm is selecting an optimal basis from a library of wavelet bases for ideal de-noising. The algorithm with an optimal basis from a library of wavelet bases for de-noising was created through making use of Matlab＇s Wavelet Toolbox. The experimental results show that the new algorithm is efficient in signal de-nosing.

关键词： wavelet de-noising Matlab

Dome Combustion Hot Blast Stove for Huge Blast furnace

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Journal of Iron and Steel Research International 2012年第9期19卷 1-7页

作者： zhang fu-ming , MAO Qing-wu , MEI Cong-hua , LI Xin , HU Zu-rui ( Beijing Shougang International Engineering Technology Co Ltd , Beijing 100043 , China ) Beijing Shougang International Engineering Technology Co Ltd Beijing 100043 China

In Shougang Jingtang 5 500m 3 huge blast furnace ( BF ) design , dome combustion hot blast stove ( DCHBS ) technology is *** process is optimized and integrated , and reasonable hot blast stove ( HBS ) technical parameters are *** model is established and adopted by computational fluid dynamics ( CFD ) .The transmission theory is studied for hot blast stove combustion and gas flow , and distribution results of HBS velocity field , CO density field and temperature field are *** test model and hot trail unit are established , and the numeral calculation result is verified through test and investigation.3-D simulation design is *** process flow and process layout are optimized and *** air two-stage high temperature preheating technology is designed and *** sets of small size DCHBSs are adopted to preheat the combustion air to 520-600℃.With the precondition of BF gas combustion , the hot blast stove dome temperature can exceed 1 420 ℃. According to DCHBS technical features , reasonable refractory structure is *** technical measures are adopted to prevent hot blast stove shell intercrystalline stress *** blast stove hot pipe and lining system are optimized and *** blowing in , the blast temperature keeps increasing , and the monthly average blast temperature reaches 1 300℃ when burning single BF gas.

关键词： dome combustion hot blast stove high blast temperature ceramic burner high temperature combustion air preheating CFD

新文学语境中的名著翻译与现代审美形态的本土化确立

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复旦学报（社会科学版） 2011年第4期53卷 135-140页

作者：张芙鸣复旦大学中文系上海200433

在20世纪初的文化再造中,体现语言之关联的翻译活动具有破旧立新的关键性作用。在这一过程中,新文学作家和译者并不单纯以"拿来主义"的热情被动接受西方文学经典,而是本着"为我所用"的功利心态对西方名著进行挑选和功能转换,甚至是有意... 详细信息

在20世纪初的文化再造中,体现语言之关联的翻译活动具有破旧立新的关键性作用。在这一过程中,新文学作家和译者并不单纯以"拿来主义"的热情被动接受西方文学经典,而是本着"为我所用"的功利心态对西方名著进行挑选和功能转换,甚至是有意地误读或歪曲,其目的是建构既与世界文学相融合又与其保持一定距离的具有本土现代色彩的审美叙述。

关键词：新文学翻译现代审美形式本土化

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智能化钢铁制造流程信息物理系统的设计研究

钢铁 2021年第6期56卷 1-9页

作者：张福明首钢集团有限公司北京100041 北京市冶金三维仿真工程技术研究中心北京100043

现代钢铁制造流程是集成烧结、球团、焦化、炼铁、炼钢和轧钢等多工序过程的耗散结构体系。钢铁制造流程是在物质流、能量流和信息流协同运行的条件下,完成一系列复杂的冶金过程和转变。探讨了对钢铁制造过程物理本质以及运行特征的认... 详细信息

现代钢铁制造流程是集成烧结、球团、焦化、炼铁、炼钢和轧钢等多工序过程的耗散结构体系。钢铁制造流程是在物质流、能量流和信息流协同运行的条件下,完成一系列复杂的冶金过程和转变。探讨了对钢铁制造过程物理本质以及运行特征的认识和研究,提出了现代钢铁制造流程物理系统的设计理念和方法。阐述了流程工程动态精准设计体系在钢铁冶金工程设计中的应用,讨论了智能化钢铁制造流程的系统层次和构建理念。着重论述了钢铁制造流程信息物理系统的内涵和架构,提出了静态物理系统与信息系统集成、耦合、协同的设计理念和方法,论证了现代钢铁制造流程信息物理系统的智能化设计思路、程序和应用实践。

关键词：钢铁制造流程智能化信息物理系统设计耗散结构