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, an ideal condition that the frictional coefficient is zero is considered. Fig.1 Finite element analysis model Table 1 Parameters of material[17-18] Table 2 Flow stress model of materials[18-19... plastic strain εp. The plastic wave velocity vp can be obtained by applying the material parameters and flow stress model to Eqn.(7), as shown in Fig.8. The plastic wave velocity vp decreases......
applications developed at the Industrial Materials Institute[5]. Simulation results with the two phase mixture model are depicted in Fig.5 where the flow of the semi-solid material is shown... fraction near the billet walls. This "skin" is then carried away by the flow. In the early stages, the skin material accumulates on the diaphragm wall, as shown in Fig.5(b). Part of the skin......
Effect of welding speed on the material flow patterns in friction stir welding of AZ31 magnesium alloyZHANG Hua1), Wu Huiqiang2), Huang Jihua1), LIN Sanbao3), and WU Lin3) 1) Materials Science... to explain the formation mechanism of the weld nugget when friction stir welded AZ31 magnesium alloy without any other insert material is used as mark. It provides a simple and useful method to research......
ARTICLE J. Cent. South Univ. (2019) 26: 1294-1305 DOI: https://doi.org/10.1007/s11771-019-4088-5 Flow and natural convection heat transfer characteristics of non-Newtonian nanofluid flow bounded... GmbH Germany, part of Springer Nature 2019 Abstract: The main goal of this paper is to investigate natural convective heat transfer and flow characteristics of non-Newtonian nanofluid streaming between......
Effects of argon gas flow rate and guide shell on oxygen concentration in Czochralski silicon growthREN Bingyan ZHAOLong,ZHAO Xiuling, WANG Huixian, CAO Zhongqian, ZHU Huimin,and FU Hongbo School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China Hebei Ningjin Jinglong Semiconductor Factory, Ningjin 055550, China Yunnan Semiconductor Device Factory, Kunming......
temperature of 350-500 ℃. Key words: 5083 aluminum alloy; hot compression; flow stress; dynamic material parameter; constitutive model 在金属热加工过程中,材料流变应力因微观组织的变化而产生变化,流变应力将影响加工设备载荷与能耗,准确的流变应力本构模型(CM)可为加工设备的选...)05-1072-08 Constitutive model of 5083 aluminum alloy based on dynamic material parameters DAI Qingsong1, DENG Yunlai1, OU Shisheng1, FU Ping2 (1. School of Materials Science and Engineering, Central......
Trans. Nonferrous Met. Soc. China 22(2012) 157-163 Numerical calculation of flow field inside TiAl melt during rectangular cold crucible directional solidification YANG Jie-ren, CHEN Rui-run, DING... January 2011 Abstract: Numerical investigations on the flow field in Ti-Al melt during rectangular cold crucible directional solidification were carried out. Combined with the experimental results, 3-D......
J. Cent. South Univ. (2019) 26: 501-514 DOI: https://doi.org/10.1007/s11771-019-4022-x Finite element modeling of convective pore-fluid flow in fluid-saturated porous rocks within upper crust..., the University of Western Australia, Crawley, WA 6009, Australia Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Convective pore-fluid flow (CPFF) plays......
of the pipe (with no porous medium) and the low porosity of the porous material, which in turn causes a reduced resistance against the nanofluid flow. In the second geometry and for a porosity of 0.9... J. Cent. South Univ. (2019) 26: 1976-1999 DOI: https://doi.org/10.1007/s11771-019-4146-z Numerical investigation of laminar heat transfer and nanofluid flow between two porous horizontal concentric......
Flow field simulation of double layer atomizer ZHAO Wen-jun(赵文军), CAO Fu-yang(曹福洋), NING Zhi-liang(宁志良), SUN Jian-fei(孙剑飞) School of Materials Science and Engineering, Harbin Institute... and the secondary atomizer, on gas flow field were investigated by simulation. The effects of primary pressure on gas velocity at the centerline were compared. Water atomizing experiment was carried out to validate......