Two-Dimensional Theoretical Study on Flow Characteristics of a Spiral-Channel Viscous Micropump

2018 ◽  
Vol 11 (4) ◽  
pp. 374-386
Author(s):  
Donghyuk Kang ◽  
Koichi Nishibe ◽  
Kotaro Sato ◽  
Kazuhiko Yokota
Author(s):  
Yutaka Asako ◽  
Kenji Nakayama

The product of friction factor and Reynolds number (f·Re) of gaseous flow in the quasi-fully developed region of a micro-tube was obtained experimentally and numerically. The tube cutting method was adopted to obtain the pressure distribution along the tube. The fused silica tubes whose nominal diameters were 100 and 150 μm, were used. Two-dimensional compressible momentum and energy equations were solved to obtain the flow characteristics in micro-tubes. The numerical methodology is based on the Arbitrary-Lagrangian-Eulerian (ALE) method. The both results agree well and it was found that (f·Re) is a function of Mach number.


2021 ◽  
Vol 33 (21) ◽  
pp. 215803
Author(s):  
Wen-Qiang Xie ◽  
Zhi-Wei Lu ◽  
Chang-Chun He ◽  
Xiao-Bao Yang ◽  
Yu-Jun Zhao

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