A distributed parameter model for the solvent evaporation from a saline droplet including internal solute diffusion and heat conduction DOI Creative Commons
Benjamin Mignot, Tariq Mahmud, Peter J. Heggs

et al.

Aerosol Science and Technology, Journal Year: 2024, Volume and Issue: 58(8), P. 942 - 956

Published: June 13, 2024

The study of respiratory droplets evaporation and formation crystalline solid residues has become more important with the spread diseases such as COVID-19. Evaporation time droplet sizes greatly influence dispersion aerosols their subsequent airborne transmission to susceptible hosts. In this study, a saline is used surrogate for mathematical model developed its evaporation. Predictions agree well experimental data reported in literature. includes partial differential equations (PDEs) diffusion dissolved solute heat conduction within water from surface. internal domain discretized space using finite volume method, transforming into set ordinary time, which are solved Rosenbrock method. calculation terminates when concentration at surface reaches value corresponding critical supersaturation level on-set crystallization. radial profiles different intervals highlight enrichment it dries, by rate solvent affected. also applied free-falling evaporating under room temperature relative humidity. outcome reveals strong dependency initial on ratio final size. Lastly, capability predictions demonstrated high humidity, where condensation occurs, broadening model's applicability.

Language: Английский

Modeling and simulation of droplet-to-particle formation during spray pyrolysis DOI
Shengfeng Luo, Lun’ang Li,

Mengzhao Chang

et al.

International Journal of Thermal Sciences, Journal Year: 2023, Volume and Issue: 197, P. 108818 - 108818

Published: Dec. 8, 2023

Language: Английский

Citations

5
Evaporation Affects the In Vitro Deposition of Nebulized Droplet in an Idealized Mouth-Throat Model DOI Creative Commons
Xueying Xia, Ting Ding, Xiaole Chen

et al.

Atmosphere, Journal Year: 2022, Volume and Issue: 14(1), P. 93 - 93

Published: Dec. 31, 2022

Nebulizer is one of inhalation therapy’s most widely used aerosol generation devices. Nowadays, the vibrating mesh nebulizer has become popular owing to its compactness and noiselessness. In this study, an experimental system proposed measure deposition fraction (DF) nebulized sodium chloride (NaCl) droplets in idealized mouth-throat airway model. The results show that before DF increases 58.6% with increasing flow rate 60 L/min, there a decrease from 42.4% 15.5% when 15 22.5 L/min for normal saline solution. These substantially differ conclusions dry powder or particle experiments simulations, which monotonously rate. This suggests droplet evaporation during transport plays important role. experiment also showed generated solutions higher NaCl concentration have DFs.

Language: Английский

Citations

7
Prediction of transmission routes of respiratory infectious diseases in indoor environment: Based on droplet evaporation and sedimentation analysis DOI
Luyao Guo, Cheng Zhu, Xingchi Jiang

et al.

Indoor and Built Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 19, 2024

Many respiratory infectious diseases are believed to be transmitted from person through droplet nuclei in the air or contact with droplet-contaminated surfaces. Most studies related evaporation only focus on process, without dividing transmission routes of caused by evaporation. In this paper, actual size was analyzed, and changes component content were predicted. Especially considering dynamic effect droplets change, a more realistic sedimentation model established, probability pathogen different corresponding distribution range analyzed. The results showed that rate process together determined time required for number still suspended after end is much higher than settling ground. addition, differences during may affect inactivation pathogens droplets. This study provided reference prevention control strategies indoor environments.

Language: Английский

Citations

1
Control oriented modeling for particle size distributions in a spray drying process DOI Open Access

A. Lepsien,

Angelika Jüptner,

Regina Scherließ

et al.

IFAC-PapersOnLine, Journal Year: 2024, Volume and Issue: 58(15), P. 438 - 443

Published: Jan. 1, 2024

Language: Английский

Citations

1
The morphology of dryout nanofluid droplet and underlying mechanisms based on coarse-grained molecular dynamic simulations DOI
Xiao Jin, Ruijin Wang, Lizhong Huang

et al.

Journal of Molecular Liquids, Journal Year: 2023, Volume and Issue: 383, P. 122064 - 122064

Published: May 11, 2023

Language: Английский

Citations

3
Wet-core temperature and concentration profiles in a single skim milk droplet drying process DOI
Ali M. Sefidan, Mathieu Sellier, James N. Hewett

et al.

Applied Thermal Engineering, Journal Year: 2022, Volume and Issue: 212, P. 118571 - 118571

Published: May 5, 2022

Language: Английский

Citations

5
Effect of the Air Coflow Temperature and Spinneret Position on the Solution Blow Spinning Technique DOI
A. Rubio, Francisco J. Martínez‐Vázquez, M.G. Cabezas

et al.

Fibers and Polymers, Journal Year: 2022, Volume and Issue: 23(8), P. 2299 - 2305

Published: Aug. 1, 2022

Language: Английский

Citations

5
On-demand evaporation mode of sessile droplet by designing substrate surface wettability patterns DOI
Yongshuai Wen, Yongshou Liu

Physics of Fluids, Journal Year: 2021, Volume and Issue: 33(12)

Published: Dec. 1, 2021

A conceptual strategy of controlling the evaporation mode sessile droplet that is demonstrated by variation its contact angle and radius through designing surface wettability pattern substrate proposed. theoretical model established based on geometry shape minimization total free energy droplet-substrate system. The implemented to predict during used determine time evolutions radius. With this theory, a relationship between patterns modes established. Comprehensive molecular dynamics simulations are employed validate predictions, agree well with predictions. proposed technique control droplets further deposition nanoparticles liquid evaporation, which manifests herein could explain underlying mechanism such method has potential applications in inkjet printing, nano-assembly, nano-device manufacturing.

Language: Английский

Citations

6
Controlled ultrasonic nebulization: A physical vapor deposition variant for low temperature and low growth rate of small molecule thin films DOI
Lucas Polesi, Everton Pereira-Andrade, Ângelo Malachias

et al.

Organic Electronics, Journal Year: 2023, Volume and Issue: 122, P. 106890 - 106890

Published: July 10, 2023

Language: Английский

Citations

1
A porous-crust drying model for a single dairy droplet DOI Creative Commons

Ken O’Connell,

Akeem K. Olaleye, H.E.A. van den Akker

et al.

Process Safety and Environmental Protection, Journal Year: 2023, Volume and Issue: 200, P. 741 - 752

Published: Nov. 22, 2023

The development of a novel numerical model for droplet drying is the topic this paper. three main stages are distinguished, viz. unhindered evaporation 'wet' particle (the droplet), restricted at falling rate due to formation crust around wet core, and inert heating dry porous particle. Each stage mathematically detailed replicate all phenomena occurring throughout process. focus, however, on regime which described in terms Stefan diffusion water vapour through pores thickening crust. To end, needs material properties. This permits characteristics be determined by composition rather than single-droplet experiments. Finally, validated against five such experiments from literature using skim milk. Good agreement found each comparative case mass temperature various regimes providing that good reasons cases lower air applied reported capable predicting entire process low computational cost without requiring empirical input.

Language: Английский

Citations

1