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UNSTEADY SUPERCAVITATING FLOW PAST CONES

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Journal of Hydrodynamics 2006年第3期18卷 262-272页

作者： HU Chao YANG Hong-lan ZHAO Cun-bao huang Wen-hu institute of Aerospace Engineering and Applied mechanics Tongji Universtity Shanghai 200092 China Department of Aerospace Engineering and Mechanics Harbin Institute of Technology Harbin 150001 China Department of Aerospace Engineering and Mechanics Harbin Institute of Technology Harbin 150001 China

Based on integral equation method, the study of unsteady supercavitating flow past cones is presented. The shape and length of supercavity are calculated respectively using the finite difference time discretization method. The characteristics of the shape and length of supercavities, which vary with the cone＇s angle and cavitation number, are investigated respectively, the varied features of some supercavity scales are analyzed when the flow field is perturbed periodically. The curves relationship between cavity length and cavitation number, which are based respectively on present method and other theories, are discussed and compared. It is obviously shown that the supercavity changes have two characteristics： retardance and wave. These results obtained would be useful in the case of design and analysis of cavitator under water.

关键词： supercavitation cavitator unsteady flow,slender body theory integral equation method

STUDY ON RESTRAINING THE RESIDUAL VIBRATION OF FLEXIBLE ARM BY planning ACCELERATION

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Chinese Journal of Mechanical Engineering 2000年第4期13卷 245-250页

作者： Zhu Jian (Centre for Intelligent design ,Automation and Manufacturing， City University of Hong Kong, Hong Kong) Shao Hao Wang Xingsong (harbin institute of Technology Southeast University) 香港城市大学香港哈尔滨工业大学黑龙江哈尔滨东南大学江苏南京

The method of planning acceleration is discussed to restrain the residual vibration of flexible arm. Based on the built mathematical model of the flexible arm, the equations of vibration with acceleration,vibration frequency,damping and time are obtained *** to the vibration frequency and damping, the suitable acceleration is executed experimentally to the flexible arm at the corresponding time. The result shows that this way can give rise to good effect to restrain the residual vibration.

关键词： Flexible arm Restraining vibration control Acceleration

Transpositional Thinking: City planning for the Unprivileged Groups

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China City planning Review 2006年第1期15卷 66-71页

作者： CHEN Jun, Beijing City planning & design institute, Beijing, P. R, China. huang Wenjing

1. Thoughts from Gini coefficient The Gini coefficient is an index that reflects the economic income gap in a society. Inequity will appear and some unstable factors will start to emerge in a society when the economic income gap between the rich and the unprivileged group is over 0.4. Beijing is the capital city of China, whose socio-economic stability shoulders

关键词： income unstable emerge housing houses instead adju

RAIN INTENSITY DISTRIBUTION IN THE SPLASH REGION OF ATOMIZED FLOW

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Journal of Hydrodynamics 2006年第3期18卷 362-366页

作者： DUAN Hong-dong LIU Shi-he LUO Qiu-shi huang Wei School of Water Resource and Hydropower Wuhan University Wuhan 430072China Water Resources and Hydropower planning and design General institute MWR Beijing 100011 China

Atomized flow is an unnatural two-phase flow produced while water discharges in water release structures. This flow might threaten the normal operation of hydraulic and hydroelectric installations owing to the unnatural and high-density rain as well as the unnatural and dirty mist. The splash region, the region with the highest rain intensity, hence should receive much attention during the design and operation of the hydraulic and hydroelectric installations. In this paper rain intensity distribution in the splash region of the atomized flow is investigated experimentally, and the method of random simulation is used to predict the rain intensity distribution in the splash region.

关键词： atomized flow splash rain intensity

Renovation Project of Dangerous Old Houses in Xiao Hou Cang Lane——A probe into an urban renewal project

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China City planning Review 1991年第2期8卷 46-52页

作者： huang Hui Shi Jian Beijing institute of Architectural design

In the past,Xiao Hou Cang Lane looked like a large miscellaneous compound,tattered *** renovation project must on the one hand preserve the characteristics of houses inBeijing,and on the other hand meet the demand for housing of all the residents living in the laneand overcome the funding *** article gives a brief account of how these problem wereresolved when this project was *** the purpose of the redevelopment project in Long Xu Gou launched by the Beijing Muni-cipality in 1940s was to rescue the poor residents from the slum,the renovation of dangerous oldhouses in the old town of Beijing must not only ease the shortage of housing,but also raise theliving standard and improve the living *** renovation project of dangerous housesin Xiao Hou Cang lane is an important attempt by West District Authority of Beijing to improvethe housing standard in the old town.

关键词：合用

Concept of the Detailed Scheme for Wangjing New District

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China City planning Review 1989年第1期6卷 69-78页

作者： huang Fuxiang Shao Zhangsheng Shanghai Municipal design institute

Through the process of urban design,statutory control and comprehensivedevelopment,the Shanghai Municipaldesign institute conceived a scheme whichprovides a new district of high—capacity,high-quality environment,andh... 详细信息

关键词：二滩典型

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居住区小型污水处理论析

四川理工学院学报（自然科学版） 2004年第3期17卷 155-158页

作者：黄康蚌埠市规划设计研究院安徽蚌埠233000

随着城市建设发展,居住区环境保护、污水治理日益被重视。其污水依照排放标准的不同对处理深度和工艺有不同的要求。文章概述了居住区小型污水处理、中水回用常用的工艺及其本质,探讨了各工艺关键反应池的控制性参数。

关键词：居住区污水处理再生利用生物接触氧化活性污泥法 SBR MBR

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煤层气井地应力评价图的编制方法

天然气工业 1998年第4期18卷 9-12页

作者：黄景诚段春节王伟中国新星石油公司华北石油局规划设计研究院

地应力研究结果可为煤层气评价选区提供重要的资料。对于井下某一煤层，通过测试和计算可得到地应力、地层压力、解吸压力以及据以上基础数据而得出的许多推算值。它们构成了一个复杂的力学系统从而影响煤层气的储存和产出。通常对上述... 详细信息

地应力研究结果可为煤层气评价选区提供重要的资料。对于井下某一煤层，通过测试和计算可得到地应力、地层压力、解吸压力以及据以上基础数据而得出的许多推算值。它们构成了一个复杂的力学系统从而影响煤层气的储存和产出。通常对上述数值进行分析时，特别是涉及到不同煤层和不同井的煤层之间的对比时，显得相当麻烦。介绍了一种煤层气井地应力评价图解法，既可对同一井的不同煤层，又可对不同地区不同井的煤层按深度将有关的各项力学参数在图上直观地表示出来，在图上进行煤层间各种数值对比十分方便。对美国、中国的５口代表井进行了作图分析，并结合各煤层的产气量，说明了地应力评价的重要性和作图法评价的有效性。

关键词：煤成气地质评价应力分析地层压力气井产能

Management of Tourism Group and Technology of the Personalized Tour Based On RFID

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Management of Tourism Group and Technology of the Personaliz...