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Grid Generation and Numerical Analysis of Multi-Stream Flow in the Complex Channel with a Forced Mixer Lobe

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Journal of Thermal Science 2004年第2期13卷 167-173页

作者： Suofang Wang liguo li Jingzhou Zhang Nanjing Univ Aeronaut & Astronaut Coll Energy & Power Engn Nanjing 210016 Jiangsu Peoples R China

The co-located grid, SIMPLEC and Chen-Kim modified k - E turbulence model are applied to investigate numerically the multi-stream flow and temperature fields in the complex channel with a forced mixer lobe at room temperature and at elevated temperature. The body-fitted coordinate grids are generated respectively in sub-domains according to the shapes of the channel by solving Poisson’s equations to compose the whole grid of the domain. The large viscosity, linear and simultaneous under-relaxation factors are used to solve the coupling of fluid and solid. The solid grid is complemented at the upper inlet of the secondary flow to keep the same node number at the inlet and at double-wall sub-domains. The numerical results and experimental data show good agreement at room temperature. It is illustrated that the cooling air ejected into the slot between the double plates decreases the temperature of the wall.

关键词： body-fitted coordinate multi-stream flow lobe ejector double-wall.

Further Promoting Self-Governance in

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Qiu Shi 2013年第1期5卷 26-34页

作者： li liguo

Promoting Innovations in Social Governance

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Qiu Shi 2014年第2期6卷 118-128页

作者： li liguo Minister of Civil Affairs of the People's Republic of China

fChinas Progress in Coping with Major Natural Disasters

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Qiu Shi 2013年第4期5卷 74-82页

作者： li liguo National Commission for Disaster Reduction and Minister of Civil Affairs of the People's Republic of China

CUTTING TEMPERATURE OF TEMPERING BEARING STEEL GCr15 CUT BY PCBN CUTTER

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Chinese Journal of Mechanical Engineering 1999年第4期12卷 254-259页

作者： liu Xianli Chen Bo Meng An Chen liguo li Zhenjia Dept.of Mechanism Engineering, Harbin University of Science and Technology Yuan Zhejun Harbin Institure of Technology Harbin Univ of Science and Technology Harbin China

A thermoelectric curve of GCr15 BN500 is acquired by rapid label way. The study on measuring the cutting temperature with PCBN cutter is done and the calculation formula is achieved. A series of experiments about cutting temperature are made for different hardness tempering bearing steel at the same time. The rule that cutting temperature increases with increasing of the cutting speed, feed, back engagement of the cutting edge is gained. It is known that the cutting temperature is highest under the condition that back engagement of the cutting edge a p≥2.5 mm and the machined material hardness equals to 50HRC.

关键词： PCBN cutter Cutting temperature Bearing steel

APPROACH OF IMPROVING PRECISION IN ULTRASONIC DOPPLER BLOODSTREAM SPEED MEASUREMENT BY CHAOS-BASED FREQUENCY DETECTING

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Journal of Electronics(China) 2006年第3期23卷 457-460页

作者： Zhang Shuqing Jin Shijiu Lv Jiangtao Zhang liguo li Jun Electrical Engineering Institute Yanshan University Qinhuangdao 066004 China Precision Instrument and Photoelectric Engineering Institute Tianjin University Tianjin 300072 China

It is critical for cerebral vascular disease diagnosis through Doppler to detect the maximum and the minimum of the carotid blood flow speed accurately. A kind of Duffing system under an external periodic power with dump is introduced in the letter, numerical analysis is carried out by four-order Runge-Kutta method. An oscillator array is designed according to the frequency of the ultrasonic wave. When the external signals are inputted, computational algorithm is used to scan the array in turn and analyze the result, and the frequency can be determined. Based on the methods above, detecting the carotid blood flow speed accurately is realized. The Signal-to-Noise Ratio (SNR) of-20.23dB is obtained by the result of experiments. In conclusion, the SNR has been improved and the precision of the measured bloodstream speed has been increased, which can be 0.069% to 0.13%.

关键词： Chaos Frequency detecting Bloodstream speed measuring Ultrasonic Doppler Signal-to-Noise Ratio (SNR) Measuring precision

Mining the Essence of Chinese Traditional Culture; To Strengthen College Students＇ Ideological and Moral Education

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International English Education Research 2015年第2期 1-2页

作者： liguo,li Jinglei, Zhang Hongxia,Yu CangZhou Vocational and Technical College Cang Zhou He Bei China 061001 Hebei cangzhou 13 middle school Cang Zhou He Bei China 061001

This paper discusses how to excavate the essence of Chinese traditional culture, In contemporary college moral education make some discussion from the historical and cultural educational ideas and way of education, Fo... 详细信息

关键词： Traditional Culture Essence College Students Education

Civil Affairs Authorities Bent on Protecting People's Basic Rights

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The Journal of Human Rights 2010年第3期9卷 2-4页

作者： li liguo Vice-Minister of Ministry of Civil Affairs civil affairs

In response to the global financial crisis,China’s civil affairs au-thorities redoubled their effort in 2009 to improve the livelihood of the Chinese people and protect their basic rights and interests under the cons... 详细信息

关键词： Bent Civil Affairs Authorities Bent on Protecting People’s Basic Rights Basic

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一流大学建设视野下的高校综合改革

国家教育行政学院学报 2016年第2期 3-9页

作者：李立国中国人民大学北京100872

一流大学和一流学科建设与高校综合改革有何关系?高校综合改革是统筹推进一流大学与一流学科建设的必要途径;综合改革就是要探索世界一流大学发展模式,注入"中国特色"新内涵;综合改革通过人才培养模式和科研体制创新为核心、教师队伍建... 详细信息

一流大学和一流学科建设与高校综合改革有何关系?高校综合改革是统筹推进一流大学与一流学科建设的必要途径;综合改革就是要探索世界一流大学发展模式,注入"中国特色"新内涵;综合改革通过人才培养模式和科研体制创新为核心、教师队伍建设和高校治理体系完善为关键的改革提升办学水平,推进一流大学建设。要遵循教育规律,推进高校综合改革与一流大学建设。

关键词：一流大学一流学科高校综合改革教育规律