Search results

The Theoretical Analysis and Experimental Study on Heat-Transfer in Cryogenic Pneumatic Mist Jet Cooling Jialong Ren1,a , Xiaoyan Guan1,b 1 Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China azjrenjialong@yahoo.com.cn , bguanxiaoyankb@163.com Keywords: Cryogenic pneumatic mist jet cooling, heat-transfer coefficient, cooling experiment.
It can be concluded by transient test in cryogenic pneumatic mist jet cooling high temperature titanium surface with different water flow, that when reaching the best cooling effect, the water flow of cryogenic pneumatic mist jet cooling as well as the materials vaporizing and involving phase change heat-transfer under certain temperature must be equivalent, and at that time, the heat transfer coefficient of cryogenic pneumatic mist jet cooling will reach the maximum.
So we need to build experimental platform such as: Simulation of the materials generating cutting heat continuously in practice cutting, feeding heat to one end of the test sample, cooling the other end of the test sample with different water density in cryogenic pneumatic mist jet cooling, and we should minimize the impact of environmental factors as far as possible , check the changes of the temperature real-timely and transmit it to the Data Acquisition Instrument.
Similarly , when at the temperature of 150 ℃, 200 ℃, 250 ℃ on the titanium alloy test sample surface, Water5, Water6 and Water8 can all be vaporized and processed phase transformation heat-transfer, it is indicated that the best heat transfer coefficient corresponding to materials and temperature must be found for getting the best heat transfer effect.
It is indicated that when reaching the best cooling effect, the water flow of cryogenic pneumatic mist jet as well as the materials vaporizing and involving phase change heat-transfer under certain temperature must be equivalent, and at that time, the heat transfer coefficient of cryogenic pneumatic mist jet cooling will reach the maximum Acknowledgements This work was supported by the Natural Science Foundation of Jiangsu Province (No. 50845064) References [1] Ren Jialong The Study on Sub-dry Cutting GCr1.Chinese Journal of Mechanical Engineering[J], VOL. 15, No.1, 2002 40-42 [2] Xu Hongjun,Fu Yucan,SunFanghong．A basic study on heat affect mechanism and enhancing heat transfer in Contact Zone in efficient Grinding ．Science in China(Series E)，2002，32（3 ）：297-307 [3] Deb S, Yao S C, analysis on Film Boling Heat Transfer of Impacting Spray [J] .Int J Heat Mass Transfer 1989, 32(11): 2099～2112 [4] MeiGuohui MengHongji WuRongyang Analysis of spray cooling heat

Yang 2,c 1 Central South University, Changsha 410083,China 2 Hunan University of Science and Technology, Xiangtan 411201,China a zjwen732@163.com bliudeshun@hnust.edu.cn cysy822@126.com Keywords: Failure probability, good-lattice point, number theoretical net, side impact bar Abstract: According to poor computational accuracy at small to median sample sizes of Monte Carlo ( MC ) simulation techniques in estimating the probability failure of mechanical structures, the number theoretical net ( NT-net ) simulation method is proposed to reduce computing effort.
Introduction As the needs of highly competitive products, the increasing complexities of engineering design, and the uncertain nature of engineering world, over the last 10 years there has been an increasing trend for analysing mechanical structures using probabilistic information of loads, geometry, material properties, and boundary conditions.
Acknowledgments The authors gratefully acknowledge the financial support by Hunan Provincial Natural Science Foundation of China ( Grant No. 07JJ5074 ) , Scientific Research Fund of Hunan Provincial Education Department of China (Grant No. 07A018) and Hunan Provincial Natural Science Foundation of China(Grant No. 09JJ3093) References [1] D.
Papadopoulos: Optimum design of shell structures with random geometric, material and thickness imperfections , International Journal of Solids and Structures, Vol.43-5 (2006), p. 6948 [2] H. kahn: Application of Monte Carlo, (AECU-3259, 1954)
Ceglarek,W.Huang, and Z.Zhou: Tolerance Analysis for Design of Multistage Manufacturing Processes Using Number-Theoretical Net Method (NT-net), The International Journal of Flexible Manufacturing Systems, Vol. 16-1 (2004), p.65 [6] Y.

Under the unified planning of the operation, all members of the business chain collaboratively procures materials, collaboratively design and produce products, distributes and delivers, and through synergy forecasts, explore potential markets.
Acknowledgment This research is supported by Zhejiang Technology(2008C14061), Zhejiang Natural Science Foundation(2008C14061), Research Project of Department of Education (1130KZ710018G) Zhejiang Graduate Innovation Foundation. (1130XJ1509043) References [1] Wu Chunguo, Liang Yanchun, Lee Heow Pueh, et al.
Progress in Natural Science, 2004,14(3):257-261
Fox, Capturing and modeling coordination knowledge for multi-agent systems, International Journal of Cooperative Information Systems 5 (2-3) (1996) 275-314
Norrie, Multi-agent planning and coordination for distributed concurrent engineering, International Journal of Cooperative Information Systems 5 (2- 3) (1996) 153-179.

Materials and Methods The objective is to study influences of sensor structure and seed velocity on capacitance sensor accuracy and sensitivity in seed flow detection, and to determine reasonable sensor structure and seed flow operation velocity range.
This work is sponsored by the National Science and Technology Support Project (No. 2011BAD20B09-13) and the science and technology project of Changchun city (Contract No. 2011106).
Journal of Shenyang Agricultural University.
Science Technology and Engineering.
Chinese Journal of Scientific Instrument.

II. materials and method A.
Acknowledgments This researches are supported by National Science Foundation of China (31070754), Beijing talent cultivation plan (2010D005015000006), Doctor Start-up Foundation of Beijing University of Technology (X0015999201101) and the Furtherance Program of 11 Beijing University of Technology on Strengthening Talents Education (015000543111503).
Journal of modern oncology. 16. 3 (2008) 473-475
Journal of clinical rehabilitative tissue engineering research. 13. 4 (2009) 731-734
Beijing: Science Press. 131-133. (1997)

The first one is the basic part information such as its name, classification and identification code etc; the second one is template part and browsing model information such as its path, type, file creation time, file size and so on; The third one the parameter information of part which is stored in matching strings; At last but not least one is additional attributes information, materials for example.
Acknowledgements This work was financially supported by Major Science and Technology Planning Project of Xinjiang Uighur Autonomous Region, China (Project Number: 201130110), National Natural Science Foundation of China (Project Number: 51065026), Research Fund for the Doctoral Program of Higher Education of China (Project Number: 201065001110002), and Natural Science Foundation of Xinjiang Uighur Autonomous Region, China (Project Number: 2011211A002).
Guo: Chinese Journal of Mechanical Engineering, Vol.43 (2007) No.8, pp. 91-96 [2] J.
Qi: Chinese Journal of Mechanical Engineering, Vol.46 (2010) No.21, pp.149-155 [3] X.H.

Materials and Methods Sample collection and sample preparation for metal analysis From June to July 2012, a number of samples were selected from bivalves and the edible fish by random sampling in Dandong market and were sent to a laboratory for analysis including 5 species of fish ((Aristichthysnobilis, Hypophthalmichthysmolitrix, Carassiusauratus, Carp, Clariasfuscus) and 3 species of bivalves (Mactra.Veneriformis reeve, Ruditapes philippinarum, Pernaviridis).
Heavy metal concentration and its evaluation in the organisms from Meizhou bay [J], Marine Environmental Science, 1994, 13(1), 39-45
Journal of Environmental Sciences, 2001, 13(2), 210-217
Chinese Journal of Public Health, 1998,14(1), 24-25
Evaluation of heavy metals in edible fishes and bivalves available in a market in Guangzhou City [J], Environmental Science and Technology, 2002, 25( 6), 15-17.

Materials and Methods Toxicity Datasets.
Acknowledgements This study was supported by the Key Projects in the National Science & Technology Pillar Program in the Eleventh Five-Year Plan Period (2008BAC43B01).
Vol. 74 (2011), p. 1036 [5] H.T Wolterbeek and T.G Verburg: Science of the Total Environment.
Shi: Journal of Anhui Agricultural Sciences.
Wang: International Journal of Human and Ecological Risk Assessment.

Material constants for concrete are obtained from the tests: E0=31.35 GPa for Young’s modulus; fc=35.1 MPa for peak compressive strength; ε0=0.002 for peak compressive strain; fu=28 MPa for ultimate compressive strength and εu=0.004 for ultimate compressive strain.
Acknowledgements This work was financially supported by t the National Basic Research Program of China (973 Program) (2011CB013602), Beijing Natural Science Foundation (8111001) and the Natural Science Foundation of China (90715035).
Journal of Geotechnical and Geoenvironmental Engineering, Vol. 131, issue 12, 1522-1533, 2005
Dynamic centrifuge model test of a soil-structure interaction system, China civil engineering journal, Vol. 43, issue11, 114-121, 2010
Science in China (Series E), Vol.35, issue 9, 966-980, 2005.

Analysis of the course scheduling results of teachers The course scheduling result of teacher 28 is selected randomly as an example, as shown in the following Table 4： Time Monday Tuesday Thursday Thursday Friday 1-2 Civil engineering materials, 1-16, B404, Civil engineering1001 3-4 steel structure, 1-12, B309, Civil engineering 1001 5-6 structural mechanics, 1-12, B309, Civil engineering1001 As shown in Table 4, it can be seen that the time of the courses of teacher 28 is arranged reasonably, with intervals between two courses, which can meet the course preparation arrangements of teacher 28, so the course scheduling result meets the available and reasonable conditions. 5 Conclusions The experiment results show that the method of course scheduling presented in the paper is feasible and effective.
Satisfactory course scheduling results are achieved using the method presented in this paper, which solves the hard conflicts mentioned in the paper, and also meets some soft constraints to the largest extent. 6 Acknowledgment This Article was Supported by for Basic Scientific Research of Central Colleges, Chang’an University and the Support Plan Special Fund of Chang’an University Basic Research CHD2011JC116(2011209); Ministry of housing and Urban-Rural Construction Soft Science Fund(2011-R1-26;20ll-R3-19); Shaanxi Soft Science Fund (20llKRM20);Shaanxi Social Sciences 2012 major theoretical and practical issues research project (2012C008); Highway Maintenance under Low Carbon Economy (2171-20130186).Thanks for professor Yi-fan Tang’s kindness and help, and assistant professor Hai-yan xie (university of Arkansas Little Rock, USA)’s constructive suggestion. 7 References [1] Xia Xiao-yun, Gao Wu-Jun.The Making Class Schedule System of High School Based on Genetic Algorithms[J].
Journal of Jingchu University of Technology, 9(2010): p. 27-29
Journal of Nanchang College of Education, 11(2010): p. 38-39