What is it about?
The article explores the behavior of deformable compound droplet within a confined channel under pulsatile flow. The research examines how these droplets move and change shape in response to pulsatile fluid velocities using a numerical approach with an in-house solver based on the level-set method. The key parameters investigated include the effects of the Strouhal number, pulsatile flow amplitude, and physical properties such as density ratio, size ratio, and viscosity ratio on the dynamics of the compound droplets. The study shows that a low Strouhal number leads to significant oscillations in flow velocity and greater droplet deformation, while a high Strouhal number results in smoother droplet motion with less deformation. Additionally, it finds that off-centered compound droplets tend to migrate toward the center of the channel.
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Why is it important?
Pulsatile flow mimics natural biological systems, such as blood flow in arteries, making this study relevant for biomedical applications. Understanding how compound droplets behave under pulsatile conditions can lead to better control and efficiency in applications that require precise manipulation of particles or substances within droplets.
Perspectives
The insights from this study can improve drug delivery systems by optimizing how drugs are encapsulated and released from compound droplets, enhancing their efficacy and targeting. The findings can also assist in the synthesis of advanced materials and improve processes in the food industry by ensuring better mixing, stability, and controlled release of ingredients. Furthermore, the ability to manipulate droplet behavior ensures safer encapsulation and transport of hazardous substances, minimizing risks. Lastly, this research contributes to the design and functionality of microfluidic devices, which are crucial for various scientific and industrial applications. Overall, this study advances our understanding of droplet dynamics and provides practical benefits across multiple fields.
Sundari Ramji
BITS Pilani K K Birla Goa Campus
Read the Original
This page is a summary of: Dynamics of a deformable compound droplet under pulsatile flow, Physics of Fluids, August 2024, American Institute of Physics,
DOI: 10.1063/5.0219512.
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