What is it about?

Spreading of microdropets on surfaces is important for applications such as inkjet printing, spray coating, electronics cooling and bioprinting. Computational fluid dynamics (CFD) simulations offer a faster alternative to experimental studies and reduce turnaround time for design and development of novel fluids and microfluidic devices. Precise modelling of dynamics of the contact angle is essential for effective CFD simulations. A systematic approach to parameterize the dynamic contact angle model is proposed for enabling accurate simulation of droplet impingement and spreading on surfaces of diverse wettability under different flow conditions.

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Why is it important?

Accurate prediction of droplet dynamics is important, particularly across diverse flow conditions, to design and optimize devices and novel fluids used in applications like inkjet printing, spray coating, electronics cooling, chemical etching, bioprinting and point-of-contact diagnostic devices. This work is expected to help researchers to substitute expensive and complex experimental measurements with CFD simulations to streamline the design and optimization of a wide range of devices and fluids.


The systematic approach for estimating parameters in the dynamic contact angle model will help reduce the number of computationally intensive CFD simulations by trial and error for applications in inkjet printing, microfluidics, and bioprinting.

Venkataramana Runkana
TCS Research

Read the Original

This page is a summary of: Droplet impingement on a solid surface: Parametrization and asymmetry of dynamic contact angle model, Physics of Fluids, June 2023, American Institute of Physics, DOI: 10.1063/5.0147849.
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