中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共3条,第1-3条 帮助

条数/页: 排序方式:
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.  
在MM5中实现IKAWA参数自适应选择 期刊论文  OAI收割
数值计算与计算机应用, 2007, 卷号: 28, 期号: 3, 页码: 215-220
姜金荣; 迟学斌; 陆忠华; 刘洪利
  |  收藏  |  浏览/下载:10/0  |  提交时间:2011/07/01
梯度补偿法控温晶体的高功率绿光激光器 期刊论文  OAI收割
中国激光, 2007, 卷号: 34, 期号: 5, 页码: 623, 627
赵智亮; 朱健强; 陈立华; 王勇; 王宪涛; 崔俊文; 李永春
收藏  |  浏览/下载:1242/247  |  提交时间:2009/09/18