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四流"L型"中间包控流装置优化的水模拟研究 杨明生1,马昱2,李京社2,杨树峰2,常国平2 (1.新兴铸管集团公司,河北,武安,056300;2.北京科技大学冶金与生态工程学院,北京,100083) 摘要:以新兴铸管炼钢部四流"L型"中间包为研究对象,根据相似原理建立了1∶ 2的四流中间包水模型,研究了不同结构的中间包的流体流动特性.试验结果表明:原型中间包内部结构不合理,存在较大死区,最大死区比例为66.2%,中间包四流之间的流体流动特性差异很大;各种优化方案中,"挡墙+单吹气"(方案C)与"挡墙+单吹气+湍流器"(方案D)较理想,其中方案D死区比例最小,平均停留时间最长,其死区比例为......
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of energy storage and conversion devices.At present,various energy storage and conversion devices,i.e.,potassium-ion batteries (PIBs),sodium-ion batteries关键词:......
device with the structure of ITO/SiO2/ ZnS:TmF3 /SiO2/ZnS:TmF3/SiO2/Al was prepared by e-beam evaporation method. Th e EL emission spectra show that the brightness of the novel structure devices gr eatly increases compared with that of devices with traditional double insulat or structure, and the ratio of blue emission to red emission of the novel structure device is also improved. The improvement......
="ChDivSummary">Luminescence materials have shown promise as display apparatus and lighting devices. The particularly interesting systems are photoluminescence materials that are capable of reversible...-polyacrylic acid(PS-b-PAA)induced by metal ions. Notably, when applied in photoluminescence devices, these photoluminescence films exhibit not only red, green, blue colors(RGB) light, but also other tuned......
" name="ChDivSummary">Transport of charge carriers in percolating nanocluster devices based on bimetallic PdCu nanoclusters was investigated in this work.The device was fabricated by self-assembly... investigation helps understanding the nature of the interface between the nanoclusters and the charge carrier transport within those devices to be utilized for optimizing gas sensing properties of PdCu......
="ChDivSummary" name="ChDivSummary">Tin oxide(SnO2) is a promising wide bandgap semiconductor for next generation ultraviolet(UV) nonpolar optoelectronic devices applications.The development of SnO2-based optoelectronic devices is obsessed by its low exciton emission efficiency.In this study,quantum confined SnO2 nanocrystals have been fabricated via pulsed laser ablation in water.The SnO2 quantum dots(QDs......
of the focused laser beam setup as a valuable tool in the study of the origins and photoresponse mechanism of the 1D nanomaterial devices.关键词:......
and portable devices,significant efforts have been devoted to the development of energy storage and conversion technologies.Nowadays,remarkable progress has been made in the field of various energy storage and conversion devices,i.e.,lithium-ion batteries (LIBs),lithium-metal batteries (LMBs),lithium-sulfur batteries(LSBs),sodium-ion batteries (SIBs),sodium-metal batteries (SMBs),magnesium-ion batteries......
materials are of great interest for the development of low cost electronic and optoelectronic devices. Although majority of research on organic materials is concerned with synthesis of novel compounds... and optoelectronic devices.关键词:......