排序方式: 共有14条查询结果,搜索用时 31 毫秒
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近年来,为了从事在超高压力下的物态方程研究,人们发展了许多加载技术,如:多级驱动、多级爆轰、激光驱动、磁驱动等,这些技术均突破了传统加载装置(化爆、气体炮等)的能力极限。但是,在实验中也出现了一个比较严峻的问题,即飞片在撞击样品(待测材料)前的驱动过程中被加热至较高的温度。飞片作为标准材料,在实验数据处理中需要引入其Hugoniot参数,而这些参数一般是在常温下测量的,称为主Hugoniot参数。飞片被加热后,初始状态偏离了常温态,其Hugoniot参数是未知的。在数据处理中, 相似文献
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随着纳米技术的发展以及Pickering乳液在食品、化妆品、医药等领域的潜在应用前景,人们对Pickering乳液给予了关注。本文全面总结了近些年来Pickering乳液的研究进展,对本课题组在Pickering乳液研究领域所取得的成果进行了介绍。本文主要分为4个部分:第一部分概述了Pickering乳液的研究现状;第二部分全面考察了Pickering乳液的各种影响因素;第三部分介绍了Pickering乳液的转相特性;最后综述了颗粒和表面活性物质协同稳定乳液的研究进展。这些研究成果促进了乳液基础理论的发展,并且拓展了乳液的应用范围。 相似文献
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Zi-jie Zhu 《中国物理 B》2022,31(10):104301-104301
Underwater acoustic models are effective tools for simulating underwater sound propagation. More than 50 years of research have been conducted on the theory and computational models of sound propagation in the ocean. Unfortunately, underwater sound propagation models were unable to solve practical large-scale three-dimensional problems for many years due to limited computing power and hardware conditions. Since the mid-1980s, research on high performance computing for acoustic propagation models in the field of underwater acoustics has flourished with the emergence of high-performance computing platforms, enabling underwater acoustic propagation models to solve many practical application problems that could not be solved before. In this paper, the contributions of research on high-performance computing for underwater acoustic propagation models since the 1980s are thoroughly reviewed and the possible development directions for the future are outlined. 相似文献
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Analytical Method to Evaluate Hugoniot of Metallic Materials with Different Initial Temperatures 下载免费PDF全文
An analytical method is proposed to evaluate the Hugoniot parameters of preheated metallic materials by relating to its principal Hugoniot. Modelling calculations for 1100 Al, Cu and Ta show that the preheating lowers to a certain extent the shock impedance and the degree of lowering the shock impedance increases with increasing preheating temperature. The Hugoniots of 6061-T6 Al and TC4 preheated flyers at known preheating temperatures are evaluated, and are utilized to calculate the particle velocity and shock pressure using the impedance-match method based on the measured shock wave velocity and impact velocity reported in Z pinch-driven and three-stage gun-driven Hugoniot experiments. The presented method allows a reasonable evaluation for Hugoniot of the preheated metallic flyers. 相似文献