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Numerical Investigation of Flow around a Triangle Cylinder Using a Multiscale Turbulence Model He Dong1,*, Ge Gao1, Zhiqiang Li1, Yangyang Tang1, Huan Xu1 and Jian Guo2 1National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China 2Beijing Institute of Aeronautical Materials, Aviation Industry Corporation of China, Beijing 100095, China *Corresponding author.
Journal of Aerospace Power.
Journal of Aerospace Power.

The study of Optimization design numerical simulation on variable spacing pile -raft foundation Wang Weiyu1,a, Zhao Tuo2,b 1 .Research Institute of Architecture Science of Hebei, Shijiazhuang 2.
The parameters of model material was shown on table 2, The finite element numerical model was shown on figure 1 to figure 2.
Table 1 The list of pile raft foundation numerical simulation parameter project Pile diameter /mm Pile length /m Pile number Pile distance Uniform cloth pile 150 2.0 61 3d-3.8d Variable pile distance cloth pile 150 2.0 44 3d-5.3d Table 2 The pile raft foundation finite element model parameters Material Elastic modulus /MPa Poisson's ratio Density /kN·m-3 Element type The 1st layer 38.5 0.40 1860 C3D8R The 2nd layer 84 0.35 1920 C3D8R The 3th layer 154.24 0.25 1750 C3D8R The 4th layer 188 0.20 1650 C3D8R The 5th layer 91 0.30 2000 C3D8R Shear wall, beam and column 30000 0.17 2500 C3D8R raft 30000 0.17 2500 C3D8R Note: the Elastic modulus of 3-5 layer were referenced in literature [6].
CHINA CIVIL ENGINEERING JOURNAL, 2000, 34(4).
Thesis of TONGJI University .1999(in chinese) [4] Cunha, R P, Poulos, H.G. and Small, J.C. (2001).Investigation of Design Alterna-tives for a Piled Raft Case History [J].Journal of Geotechnical Geoenvironmen-tal Engineering, ASCE.

This heat facilitates the melting and bonding of the two materials [3].
Advances in Materials Science and Engineering. (2019). 1-9
Journal of Engineering Science and Technology Review. 5 (2003). 10-19
Key Engineering Materials, 975 (2024), 71-77
Materials Research, 25 (2022), e20210583.

Development of a Feed Drive Simulator Ryuta Sato Organization of Advanced Science and Technology, Kobe University, 1-1, Rokko-dai, Nada, Kobe, 657-8501, Japan sato@mech.kobe-u.ac.jp Keywords: NC machine tools, feed drive system, simulator, parameter identification Abstract.
In the case of simulation without actual machines, the unpredictable parameters, such as friction parameters and damping have to be determined in empirical materials.
Tsutsumi, Development of a mathematical model of feed drive system for NC machine tools, International Journal of Manufacturing Science and Technology, 6-1 (2005) 31-39
Tsutsumi, Mathematical model of linear motor stage with non-linear friction characteristics, Journal of Advanced Mechanical Design, Systems, and Manufacturing 2-4 (2008) 675-684.

Indirect loss means loss of non-material form which was caused by urban disasters, such as destruction of social order and security, chaos of production and life, people's panic, psychological damage of affected people, and so on.
There is a big requirement of material and financial resources in post-disaster relief and reconstruction.
Integrated Governance of Natural Disaster Risk. submitted to Journal of Beijing Normal University(Social Sciences)( 2006) , in Chinese
Study on the Comprehensive Disaster Prevention and Mitigation Planning Method:A Case Study of Langfang City. submitted to China Safety Science Journal(2008) , in Chinese

Though the stresses are not more than the material yield limit, the fatigue failure of the frame can also be caused.
From table 2, it is known that the maximum stresses of these five nodes are not more than the material yield limit 345MPa.
Journal of Nanjing University of Science and Technology, 2001, 12 [3] A.D Gupta.
Journal of Jiamusi University(Natural Science Edition), 2011 [12] Sun Wei.

The sensor adopts 6H-SiC materials, it can be used in high electromagnetic field and high temperature, special applications.
In China, the development of science and technology of China group g score high piezoresistive MEMS acceleration sensor, the maximum range can reach 30000g to 50000g of overload ability is greater than 100000g, sensitivity up to 50/g, the frequency response is 2k ~20k, working temperature -80~ +40℃[3].
[4] Liu Baolin, Ma Xihong, The piezoresistive pressure with high g value acceleration sensor reliability research, Chinese students learn to test the 14 th annual meeting and China's higher education technology to the second measure and control technology and instrument science conference on, pp.775-778
[5] Bai Yuxian, Cui Zhanzhong, Li Yinlin, Passive electrostatic fuze directional detection electrode research, Journal of Detection and Control, 2002, pp.45-47.in Chinese
[7] Zhang Yanjun, Zhang Ya, Yan Honghong, Li Jianfei, The missile vane electrostatic detection methods, The arrow and guidance journal, 2008, pp.259-260.in Chinese.

The Analysis of Vegetation Phenology and Climate Change in the North-South Transect of Eastern China Zhi Wang1, a*, Shirong Liu2,b 1 Institute of Agricultural Integrated Development Beijing Agriculture and Forestry Academy of Science,Beijing,China 2 Chinese Academy of Forestry, Beijing,China a* angelwang1009@163.com, b Liusr@caf.ac.
Materials and methods A Study area Weather conditions, vegetation cover show a distribution strip and significant change in NDVI on the North-South Transect of Eastern China(NSTEC).
Vegetation data from the Institute of Botany, Chinese Academy of Sciences of 1:100 million Chinese Vegetation Map (2000).
Journal of Northeast Forestry University. 2005,33(5):59-61
Journal of Shenyang Agricultural University ,2007,9(3):350-353

According to the related estimates, a solar energy building with an area of 100m2 can save 1.5 tons of heating materials such as firewood or straw each year, compared with a common building with the same area.
Fund Project: This Paper is supported by the Fund Project of Qingdao Municipal Science and Technology Commission (No. 09-1-1-91nsh).
Journal of Anhui Agricultural Sciences, 2007, 28
Journal of Luoyang Institute of Technology, 2001, 22 (4): 35-37

Thermal Efficiency of Domestic Cooking-gas Burner Using Open-Cellular Porous Media in the Case of Varied Outlet Diameter of Mixing Tube Bundit Krittacoma* and Suradech Sinjapob Development in Technology of Porous Materials Research Laboratory (DiTo-Lab), Department of Mechanical Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Muang, Nakhonratchasima, 30000, Thailand a,*bundit.kr@rmuti.ac.th and bauto013_rmuti@hotmail.com Keywords: Cooking-gas Burner, Open-cellular, Mixing Tube, Liquefied Petroleum Gas.
Sinjapo, in: Proceeding of the 7th Engineering, Science, Technology and Architecture Conference (ESTACon2016), Dusit Princess Hotel, Nakhonratchasima, Thailand, 25-26 July, (2016)
Energy Journal Vol. 8 (2007), p. 139
Janjitt: Journal of Engineering and Technology Rungsit University Vol. 12 (2009), p.34.
Puri: Combustion Science and Engineering, First Edition (CRC Press Taylor & Francis Group, Singapore 2007).