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A Passive Micromixer with Koch Snowflakes Fractal Obstacle in Microchannel

عنوان مقاله: A Passive Micromixer with Koch Snowflakes Fractal Obstacle in Microchannel
شناسه ملی مقاله: JR_JAFM-15-5_004
منتشر شده در در سال 1401
مشخصات نویسندگان مقاله:

L. Hasanah - Departement of Physics Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
D. F. Nurvadila - Departement of Physics Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
R. E. Pawinanto - Departement of Electrical Engineering Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
B. Mulyanti - Departement of Electrical Engineering Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
C. Wulandari - Departement of Physics Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
A. Aminudin - Departement of Physics Education, Universitas Pendidikan Indonesia, Bandung, Jawa Barat, ۴۰۱۵۴, Indonesia
J. Yunas - Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor, ۴۳۶۰۰, Malaysia

خلاصه مقاله:
The passive micromixer is one of the essential devices that can be integrated into the Lab on Chip (LoC) system. Micromixer is needed to increase mixing efficiency. In this paper, two Koch fractal obstacle-based micromixer models of Secondary Snowflakes Fractal Micromixer (SSFM) and Tertiary Snowflakes Fractal Micromixer (TSFM) were designed. The effect of the Koch fractal resistance angles (۱۵o, ۳۰o, ۴۵o, ۳۱۵o, ۳۳۰o, ۳۴۵o) and the influence of the inlet (T and T-vortex) were studied in this paper using COMSOL Multiphysics numerical simulations. The results showed that the TSFM structure with a ۳۰o angle on the T-vortex inlet is optimal. The deflection phenomena generated by the TSFM obstacle enhance the contact area between the two fluids and chaotic convection can be increased at Reynolds Number (Re) ۰.۰۵ and Re ۱۰۰. This paper examines concentration curves along the channel ranging from ۱ mol/L to ۵ mol/L. This clearly shows that the fluid flow direction changes within the microchannel. This work provides a new design for the micromixer.

کلمات کلیدی:
Secondary snowflakes fractal micromixer, Tertiary snowflakes fractal, Micromixer, obstacle, Lab on chip, Microchannel, T-vortex inlet structure

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1477790/