scholarly journals Active chaotic mixing in a channel with rotating arc-walls

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Kamal El Omari ◽  
Eliane Younes ◽  
Teodor Burghelea ◽  
Cathy Castelain ◽  
Yann Moguen ◽  
...  
Keyword(s):  
Chaotic Mixing ◽  
Rotating Arc

Chaotic mixing and heat transfer in time-periodic 3-D Stokes flows

2002 ◽  
Author(s):  
Antonio Jose Silveiro Rodrigo ◽  
Jose Paulo Barbosa Mota ◽  
Esteban Saatdjian
Keyword(s):  
Heat Transfer ◽  
Chaotic Mixing ◽  
Stokes Flows ◽  
Time Periodic

scholarly journals Scalar Signatures of Chaotic Mixing in Porous Media

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
J. Heyman ◽  
D. R. Lester ◽  
T. Le Borgne
Keyword(s):  
Porous Media ◽  
Chaotic Mixing

Chaotic mixing by oscillating a Stokeslet in a circular Hele-Shaw microfluidic device

2016 ◽  
Vol 5 (1) ◽  
pp. 1-8
Author(s):  
Yasser Aboelkassem
Keyword(s):  
Mathematical Modeling ◽  
Stream Function ◽  
Microfluidic Device ◽  
Fourier Expansion ◽  
Expansion Method ◽  
Small Oscillation ◽  
Chaotic Mixing ◽  
Mixing Efficiency ◽  
Induced Flow ◽  
Mixing Patterns

AbstractChaotic mixing by oscillating a Stokeslet in a circular Hele-Shaw microffluidic device is presented in this article. Mathematical modeling for the induced flow motions by moving a Stokeslet along the x-axis is derived using Fourier expansion method. The solution is formulated in terms of the velocity stream function. The model is then used to explore different stirring dynamics as function of the Stokeslet parameters. For instance, the effects of using various oscillation amplitudes and force strengths are investigated. Mixing patterns using Poincaré maps are obtained numerically and have been used to characterize the mixing efficiency. Results have shown that, for a given Stokeslet’s strength, efficient mixing can be obtained when small oscillation amplitudes are used. The present mixing platform is expected to be useful for many of biomicrofluidic applications.

Effects of Wire Rotating Frequency on Metal Transfer Process in Rotating Arc Narrow Gap Horizontal GMAW

2011 ◽  
Vol 189-193 ◽  
pp. 3395-3399 ◽  
Author(s):  
Ning Guo ◽  
Yan Fei Han ◽  
Chuan Bao Jia ◽  
Yong Peng Du
Keyword(s):  
Transfer Process ◽  
High Speed ◽  
Stable Process ◽  
Welding Process ◽  
Metal Transfer ◽  
Welding Parameters ◽  
High Speed Photography ◽  
Narrow Gap ◽  
Weld Formation ◽  
Rotating Arc

The metal transfer process with different welding parameters in rotating arc narrow gap horizontal welding is successfully observed by the high-speed photography system. The effects of wire rotating frequency on metal transfer process in rotating arc narrow gap horizontal welding are novelly explored. The metal transfer with different wire rotating frequency presents different modes. The results indicate that the droplet transfer has stable process with the rotating frequency of 5-20 Hz. And the weld formation is quite shapely. But with the high rotating frequency of 50 Hz, the metal transfer process is not acceptable and the weld formation is very pool. Metal transfer process is one of the most important factors of effecting the weld formation in rotating arc horizontal welding process besides the molten pool behavior and welding thermal circles.

scholarly journals Chaotic mixing using source–sink microfluidic flows in a PDMS chip

2010 ◽  
Vol 10 (4) ◽  
pp. 749-759 ◽  
Author(s):  
H. Cumhur Tekin ◽  
Venkataragavalu Sivagnanam ◽  
A. Tuna Ciftlik ◽  
Abdeljalil Sayah ◽  
Caroline Vandevyver ◽  
...  
Keyword(s):  
Chaotic Mixing ◽  
Microfluidic Flows ◽  
Pdms Chip ◽  
Source Sink
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