Study on the velocity of droplet at steady state in contraction microchannels by numerical simulation

Thanh Tung Nguyen, Van Thanh Hoang, Duc Binh Luu, Ngoc Hai Tran, Minh Sang Tran, Le Hung Toan Do
Author affiliations

Authors

  • Thanh Tung Nguyen Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam https://orcid.org/0009-0003-4164-9033
  • Van Thanh Hoang Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam
  • Duc Binh Luu Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam
  • Ngoc Hai Tran Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam
  • Minh Sang Tran Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam https://orcid.org/0009-0008-1455-1328
  • Le Hung Toan Do Department of Mechanical Engineering, The University of Danang - University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam

DOI:

https://doi.org/10.15625/0866-7136/18918

Keywords:

droplet dynamics, droplet-based microfluidic, contraction microchannel, numerical simulation, velocity of droplets

Abstract

The droplet-based microfluidic system is increasingly advancing and widely applied in various fields of analytical techniques and experiments. To optimize and advance this system, droplet dynamics is of utmost concern. The velocity of droplets is highly significant as it aids in precise droplet control and manipulation, ultimately leading to the optimization of device design and performance. This paper utilizes numerical simulations to explore the influence of flow characteristics, fluid properties, and geometric parameters of the contraction microchannel on the velocity of droplets while they are in a stable state. The findings indicate that the droplet velocity is influenced by factors such as viscosity ratio (λ), capillary number (Ca), and contraction ratio (C).

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Published

05-12-2023

Issue

Vol. 45 No. 4 (2023)

Section

Research Article

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