中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共6条,第1-6条 帮助

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龙虾眼光路在软X射线与极紫外波段成像性能仿真研究 学位论文  OAI收割
硕士: 中国科学院国家空间科学中心, 2016
作者:  
刘晶晶
收藏  |  浏览/下载:24/0  |  提交时间:2016/07/15
Schmidt和Angel结构的龙虾眼X射线成像系统性能对比研究 期刊论文  OAI收割
科学技术与工程, 2016, 卷号: 16, 期号: 5, 页码: 116-121+131
作者:  
刘晶晶;  韦飞
收藏  |  浏览/下载:49/0  |  提交时间:2016/04/11
Optical Path Difference Analysis and Simulation of Four Typical Rotary Type Interferometer 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 卷号: 35
作者:  
Feng MC(冯明春);  Liu WQ(刘文清);  Xu L(徐亮);  Gao MG(高闽光);  Wei XL(魏秀丽)
  |  收藏  |  浏览/下载:17/0  |  提交时间:2020/10/26
Simulations and experimental studies of diffuser/nozzle pumps (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Precision Mechanical Measurements, August 25, 2008 - August 29, 2009, Hefei/Jiuhua Mountain, Anhui, China
作者:  
Li W.;  Li W.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
An investigation of diffuser/nozzle micropumps is presented. Numerical simulations are done using CFD program ANSYS/Flotran. The simulations show when the opening angel is small  the flow in the diffuser/nozzle is steady  the mass flow is increasing with the adding opening angle. But when the opening angel continues increasing  the pressure grads will be bigger than zero. It means that the static pressure is gradually going up along the diverging direction. The fluid near the wall stops flowing because the velocity decreases rapidly and the dynamic pressure is not big enough to overcome the increasing of the static pressure. Finally the fluid flows reversely from the backward position of higher pressure area  this makes the separation flow of fluid  the diffuser is full of reverse fluid. And this results in the dropping of mass flow at last. The simulations also show that the performance of diffuser with a round inlet is better than that with a sharp inlet. The mass flow of micropumps with different opening angles  different inlets are measured. The experimental results agree well with the simulations. 2008 SPIE.  
Identification of the Angel-related elements in cyprinid fishes and their phylogenetic implications 期刊论文  OAI收割
PROGRESS IN NATURAL SCIENCE, 2007, 卷号: 17, 期号: 2, 页码: 168-171
作者:  
Wang Li;  He Shunping;  Chen Yiyu
收藏  |  浏览/下载:66/0  |  提交时间:2010/10/13
鲤科鱼类Angel相关元件的鉴定及其系统发育意义 期刊论文  OAI收割
自然科学进展, 2007, 期号: 4
王莉; 何舜平; 陈宜瑜
收藏  |  浏览/下载:374/52  |  提交时间:2010/10/13