共搜索到49444条信息,每页显示10条信息,共4945页。用时:0小时0分0秒636毫秒
of moving atoms in direct dynamics simulations. We employ a monodromy matrix to propose a tool for evaluating the accuracy of integrators in the trajectory calculation. We choose a general velocity... simulations. Hessian-based predictor-corrector integrator with Hessian update has a strong performance when the integrating step of the velocity Verlet approach is tripled for the predicting step......
, CHAO Run-ze, LIAN Chao, WEN Jing-lin. Simulation of temperature field and metal flow during continuous semisolid extending extrusion process of 6201 alloy tube [J]. Transactions of Nonferrous Metals... Xin-bing, YOU Wei, ZHAO Ying, LI Bing, FAN Zhi-xin. Continuous extrusion and rolling forming velocity of copper strip [J]. Transactions of Nonferrous Metals Society of China, 2013, 23(4): 1108-1113......
on the electromagnetic field of round billet continuous casting moulds in electromagnetic stirring process[J]. Journal of University of Science and Technology Beijing, 2006, 28(2): 119-123. [7] 于 洋, 李宝.... Numerical simulation and test analysis of F-EMS for continuous casting bloom[J]. Metal Heat Treatment, 2007, 32(8): 69-71. [12] TAKEDA Y. Measurement of velocity profile of mercury flow by ultrasound......
板坯连铸新型浸入式水口研究林晓川1,2,李京社1,杨树峰3,孙丽媛3,李娇3(1.北京市北京科技大学 冶金与生态工程学院2.北京市北京科技大学生态与循环冶金教育部重点实验室3.北京科技大学 冶金与生态学院,北京 100083)摘 要:采用1∶1水力学模拟方法研究了板坯连铸结晶器内流场,探讨了双侧4孔水口出口方向对结晶器内液面波动,表面流速和注流冲击深度的影响趋势,得到了双侧4孔水口出口方向对板坯连铸结晶器内流场的影响规律.研究结果表明:4个孔都向下(α<β,α与β都向下)的双侧4孔水口的方案较优,此水口的......
......
the continuous casting process. the thermo-physical properties of 13Cr steel added some rare metals, such as Mo, V, Nb, are measured to better understand the solidification structure of 13Cr bloom. A computational model using CA-FE (cellular automation-finite element) method coupled with heat transfer model is developed to describe the solidification structure in continuous casting process......
J. Cent. South Univ. (2020) 27: 3320-3333 DOI: https://doi.org/10.1007/s11771-020-4549-x Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy... and semi-arid areas. The objective of this study was to evaluate the potential of soybeans crude extract induced calcium carbonate precipitation (SICP) on reducing wind erosion risk of sandy soil. Field......
steel in the tundish was established by using the fluid dynamics package Fluent. The velocity field, concentration field, and the resi-dence time distribution (RTD) curves of molten steel flow before...Optimization of flow control devices in a single-strand slab continuous casting tundishNing Ding1,2), Yan-ping Bao1), Qi-song Sun2), and Li-feng Wang2) 1) School of Metallurgical and Ecological......
of welding speed on temperature field Fig.6 shows the effect of welding velocity on the heat input. As shown in Fig.6, both the welding width and the welding depth decrease with the increasing... Simulation on temperature field of TIG welding of copper without preheating LEI Yu-cheng(雷玉成), YU Wen-xia(郁雯霞), LI Cai-hui(李彩辉), CHENG Xiao-nong(程晓农) School of Materials Science and Engineering......
of the flow field before adjusting other operation parameters to improve the dust removal performance of WESP. QIU et al [17] modeled the velocity profile in ESP for four conditions under the self-similarity principle and found that the dust removal efficiency can be obviously improved by optimizing the flow field. HAQUE et al [18] studied the influence of the velocity profile at the inlet boundary......