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
    
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）
Download:   PDF(804KB) HTML
Export: BibTeX | EndNote (RIS)      

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.

Published: 29 November 2009
CLC:  TN 271  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:

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.

URL:

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


Y-sensor中两相层流交界面位置及分子扩散

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.

［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!