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Numerical Study on the Effect of Dynamic Contact Angle on Air Entrapment and Spreading of a Hollow Droplet Impacting on a Surface by Virendra Patel; Anshul Yadav; Seshadev Sahoo; Dhirendranath Thatoi is a Engineering article available to read on EtoBox.

What is Numerical Study on the Effect of Dynamic Contact Angle on Air Entrapment and Spreading of a Hollow Droplet Impacting on a Surface about?

The computational analysis of the importance of dynamic contact angle on the dynamic of air entrapped and spreading factor of hollow droplet impact is presented in this paper. The transient fluid flow of the impacting droplet is considered in this numerical work. The Semi-Implicit Method for Pressure Linked Equations (SIMPLE) method has been used for solving the governing equations numerically. Through the continuum surface force model, the surface tension force of the droplet is represented. The computational model for droplet simulation is well in line with the experimental findings available in the literature. The parameters of dynamic contact angle for the liquid droplet have been found by comparing with experimental data available in the literature. The findings from this paper suggest that modelling the dynamic contact angle accurately is critical in simulating droplet impact behaviour. The numerical simulation quantitatively captures the experimentally observed spreading behaviour when we use a dynamic contact angle model based on experimental findings. It has been numerical found that the splat size of the hollow droplet impact is independent of cavity size at Eu ˂˂ 1. With

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Author

Virendra Patel; Anshul Yadav; Seshadev Sahoo; Dhirendranath Thatoi

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Engineering (Physical Sciences)