Work

Experimental Analysis of Electrohydrodynamic Jet Actuation Modes Based on the Phase Doppler Technique

Year: 2025

Type: article

Abstract: Electrosprays have garnered significant interest across various fields, from automotive painting to aerospace propulsion, due to their versatility and precision. This study aims to explore the formation and behavior of the Taylor cone in electrospray systems through the observation of the different characteristics of the produced droplets, in a way to enhance the control of the electrohydrodynamic jet. To obtain these results, the SpraySpy equipment was used, based on the phase Doppler technique, obtaining several characteristics of the droplets, such as velocity, size and distribution for a single liquid, acetone. These characteristics were acquired by varying parameters, namely the distance between the emitter and the collector, the liquid flow rate and the diameter of the emitter. Additionally, a high-speed camera was used to capture the cone angle, in the same operating conditions. The findings revealed a considerable decrease in particle velocity with an increase in the flow rate, while droplet size exhibited a noticeable tendency to grow under the increase in the emitter diameter. These insights aim to provide a deeper understanding of the relationship between these operational parameters and droplet behavior, contributing to the improvement of electrospray applications.

Source: Actuators

DOI: 10.3390/act14030141

Authors: Gustavo Nunes, Miguel Moreira, Frederico Rodrigues, José Páscoa

Institution: University of Beira Interior

Language: English

Topic: Electrohydrodynamics and Fluid Dynamics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Fundação para a Ciência e a Tecnologia