Numerical Investigation of Drag Force on Micro-sized Magnetic Beads in Microchannel with Chamber Design

Authors

  • Muhammad Asnawi Vaea
  • Ummikalsom Abidin Department of Thermofluids Engineering, School of Mecahnical Engineering, Faculty of Engineering,Universiti Teknologi Malaysia, 81310 Skudai, Johor,Malaysia
  • Natrah Kamaruzaman Department of Thermofluids Engineering, School of Mecahnical Engineering, Faculty of Engineering,Universiti Teknologi Malaysia, 81310 Skudai, Johor,Malaysia
  • Fazila Mohd Zawawi Department of Thermofluids Engineering, School of Mecahnical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor,Malaysia
  • Muhammad Noor Afiq Witri Muhammad Yazid Department of Thermofluids Engineering, School of Mecahnical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor,Malaysia

Keywords:

Drag force, micro-sized bead, flow rate, microchannel, trapping chamber, microfluidics

Abstract

Biological cells or bioparticles separation is a primary step in most biological studies. One of the microfluidic bioparticles separation methods is the magnetic-based method. Integrated microfluidic magnetic bioparticle separation device is made up of a microfluidicschannel and a magnetic system. From past studies, the design of the microfluidic channel is least discussed in comparison with the magnetic system. To fill this gap, this study has focused on numerical simulation of a microfluidic channel with chamber design and the drag forces experienced by the magnetic beads. Simulation of the microfluidics channelwas donewithANSYS Fluent software. The width ratios of trapping chamber and main channel ranged from 1 to 20, the flow rates ranged from 1 μL/min to 100 μL/min, and the bead sizes ranged from 5 μm to 25 μmwere used in the numerical investigation. It was discovered that as the width ratio between the trapping chamber and main channel increases, the maximum velocity decreases, causing the Reynold’s number to decrease. The pressure drop becomegreater athigher flow rate. Higher width ratio causedthe drag force to reduceat a constant microbead size. At a constant width ratio between the trapping chamber and main channel, larger microbead sizes caused larger drag force. The microfluidic system with width ratio of 20 and flow rate of 1 μL/min produced the lowest drag force, 3.64 x 104pN. Since particle trapping would occur when the magnetic force is larger than the drag force, therefore ahigh gradient magnetic system which offered high magnetic force was proposedto be integrated with the microfluidics system.

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Published

2024-03-28

How to Cite

Muhammad Asnawi Vaea, Ummikalsom Abidin, Natrah Kamaruzaman, Fazila Mohd Zawawi, & Muhammad Noor Afiq Witri Muhammad Yazid. (2024). Numerical Investigation of Drag Force on Micro-sized Magnetic Beads in Microchannel with Chamber Design. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 57(2), 186–201. Retrieved from https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/3148

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