Special Issue "Trends in Spray Atomization"

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Mathematical and Computational Fluid Mechanics".

Deadline for manuscript submissions: 30 May 2021.

Special Issue Editors

Dr. Sadegh Poozesh
Website
Guest Editor
Mechanical Engineering Department, Tuskegee University, Tuskegee, AL 36088, USA
Interests: spray atomization; computational fluid dynamics; multiphase physics; particle dispersion systems
Dr. Nelson Akafuah
Website
Co-Guest Editor
Mechanical Engineering Department, University of Kentucky, Lexington, KY 40506, USA
Interests: Spray Painitng, Heat Transfer & Combustion, Manufacturing Processes & Systems
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Spray technology and concepts are encountered in our day-by-day lives, from advanced propulsion systems to human respiratory emissions. This special issue covers the state-of-the-art developments in various spray atomization aspects focused on coating, combustion, powder formulation, and respiratory events-with a special emphasis on the latter. New atomization techniques, characterization means, and novel liquid breakup concepts to unravel pathogen carrier droplet transmission routes, in the face of Covid-19 pandemic, are highly encouraged.

Dr. Sadegh Poozesh
Guest Editor
Dr. Nelson Akafuah
Co-Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fluids is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Spray atomization
  • Respiratory events
  • Liquid injection
  • Break-up phenomena
  • Droplet formation

Published Papers (1 paper)

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Research

Open AccessArticle
Numerical Study of the Effects of Twin-Fluid Atomization on the Suspension Plasma Spraying Process
Fluids 2020, 5(4), 224; https://doi.org/10.3390/fluids5040224 - 28 Nov 2020
Abstract
Suspension plasma spraying (SPS) is an effective technique to enhance the quality of the thermal barrier, wear-resistant, corrosion-resistant, and superhydrophobic coatings. To create the suspension in the SPS technique, nano and sub-micron solid particles are added to a base liquid (typically water or [...] Read more.
Suspension plasma spraying (SPS) is an effective technique to enhance the quality of the thermal barrier, wear-resistant, corrosion-resistant, and superhydrophobic coatings. To create the suspension in the SPS technique, nano and sub-micron solid particles are added to a base liquid (typically water or ethanol). Subsequently, by using either a mechanical injection system with a plain orifice or a twin-fluid atomizer (e.g., air-blast or effervescent), the suspension is injected into the high-velocity high-temperature plasma flow. In the present work, we simulate the interactions between the air-blast suspension spray and the plasma crossflow by using a three-dimensional two-way coupled Eulerian–Lagrangian model. Here, the suspension consists of ethanol (85 wt.%) and nickel (15 wt.%). Furthermore, at the standoff distance of 40 mm, a flat substrate is placed. To model the turbulence and the droplet breakup, Reynolds Stress Model (RSM) and Kelvin-Helmholtz Rayleigh-Taylor breakup model are used, respectively. Tracking of the fine particles is continued after suspension’s fragmentation and evaporation, until their deposition on the substrate. In addition, the effects of several parameters such as suspension mass flow rate, spray angle, and injector location on the in-flight behavior of droplets/particles as well as the particle velocity and temperature upon impact are investigated. It is shown that the injector location and the spray angle have a significant influence on the droplet/particle in-flight behavior. If the injector is far from the plasma or the spray angle is too wide, the particle temperature and velocity upon impact decrease considerably. Full article
(This article belongs to the Special Issue Trends in Spray Atomization)
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