中国科学院机构知识库网格
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Steady Euler flows with large vorticity and characteristic discontinuities in arbitrary infinitely long nozzles 期刊论文  OAI收割
ADVANCES IN MATHEMATICS, 2019, 卷号: 346, 页码: 946-1008
作者:  
Chen, Gui-Qiang G.;  Huang, Fei-Min;  Wang, Tian-Yi;  Xiang, Wei
  |  收藏  |  浏览/下载:44/0  |  提交时间:2019/12/13
Period ratios for standing kink and sausage modes in magnetized structures with siphon flow on the Sun 期刊论文  OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2016, 卷号: 16, 期号: 6
作者:  
Yu Hui;  Chen ShaoXia;  Li Bo;  Xia LiDong
  |  收藏  |  浏览/下载:20/0  |  提交时间:2021/12/06
Numerical investigation on three-dimensional shock wave reflection over two perpendicularly intersecting wedges 期刊论文  OAI收割
SHOCK WAVES, 2012, 卷号: 22, 期号: 2, 页码: 151-159
作者:  
Yang Y(杨旸);  Teng HH(滕宏辉);  Jiang ZL(姜宗林);  Takayama K;  Yang, Y
收藏  |  浏览/下载:24/0  |  提交时间:2013/01/18
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.