Please wait a minute...
浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (10): 1757-1760    DOI: 10.3785/j.issn.1008-973X.2009.10.002
机械工程     
Y-sensor中两相层流交界面位置及分子扩散
郑毅,谢海波,傅新,杨华勇
（浙江大学 流体传动及控制国家重点实验室,浙江 杭州 310027）
Interface position and molecule diffusion of two-phase laminar flow in Y-sensor
ZHENG Yi, XIE Hai-bo, FU Xin, YANG Hua-yong
（State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China）
 全文: PDF(804 KB)   HTML
摘要：

采用实验和仿真的手段,对“Y-sensor”内压力驱动的两束层流的交界面位置以及不同组分分子扩散现象进行了定量研究.在保持其中一个入口的流量为20 mL/h,另一个入口的流量分别为2、4、8、12、16、20 mL/h的情况下对交界面位置进行了实验和数值仿真.在两个入口的流量均为2 mL/h的条件下,对交界面分子扩散距离进行了数值仿真；并且利用可视化实验验证了仿真结果.结果表明,“Y-sensor”中两束流体流束宽度之比基本与流量之比相等；两束层流交界面分子扩散距离与下游位移成1/3次方的关系.
Abstract:

The experimental and emulational analysis of the interface position and molecule diffusion across two aqueous liquids in pressure-driven flow in “Y-sensor” were introduced. Experiments and numerical simulation on the interface location were conducted under the condition of keeping the flow rate at one inlet 20 mL/h and the flow rate at the other inlet 2,4,8,12,16,20 mL/h respectively. The numerical simulation on the interface diffusion was verified by visualized experiments when the flow rates at the inlets are both 2 mL/h. Results show that the ratio of stream width and the ratio of flow rates are almost equal in “Y-sensor”; the diffusion extent at the interface between two streams scales as one third power of the down stream distance.
出版日期: 2009-11-29
:  TN 271  
基金资助:

国家自然科学基金资助项目（50705081）.
通讯作者: 谢海波，男，副研究员.     E-mail: hbxie@zju.edu.cn
作者简介: 郑毅（1983-），男，辽宁葫芦岛人，硕士生，从事微机电及微流控系统等方面的研究.
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

郑毅, 谢海波, 傅新, 等. Y-sensor中两相层流交界面位置及分子扩散[J]. J4, 2009, 43(10): 1757-1760.

ZHENG Yi, XIE Hai-Bei, FU Xin, DENG. Interface position and molecule diffusion of two-phase laminar flow in Y-sensor. J4, 2009, 43(10): 1757-1760.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2009.10.002    或    http://www.zjujournals.com/eng/CN/Y2009/V43/I10/1757

［1］ MANZ A, GRABER N, WIDMER H M. Miniaturized total chemical analysis systems: a novel concept for chemical sensing［J］. Sensors and Actuators B, 1990, 1(1): 244248．
［2］ 冯颖,王敏. 微流控层流技术的研究［J］.化学进展,2006,18(7/8)：966973．
FENG Ying, WANG Min. Development of multiphase laminar flow on microfluidic analysis［J］.Progress in Chemistry, 2006,18(7/8)：966973．
［3］ KENIS P J A, ISMAGILOV R F, TAKAYAMA S, et al. Microfabrication, inside capillaries using multiphase laminar flow patternning［J］. Science, 1999, 285: 8385．
［4］ 谢海波,傅新,刘玲,等.基于玻璃湿法刻蚀的微流控器件加工工艺研究［J］. 机械工程学报,2003,39(11): 123129．
XIE Hai-bo, FU Xin, LIU Ling, et al.Research on glass wet etching for micro fluidic devices［J］. Chinese Journal of Mechanical Engineering, 2003,39(11): 123129．
［5］ ISMAGILOV R F, STROOCK A D, KENIS P J A, et al. Experimental and theoretical scaling laws for transverse diffusive broadening in two-phase laminar flows in microchannels［J］. Applied Physics Letters, 2000, 16(17): 23762378．
No related articles found!