A new model for a drying droplet

Sergei Sazhin; Oyuna Rybdylova; Ananth Pannala; S. Somavarapu; Shamil Zaripov

doi:10.1016/j.ijheatmasstransfer.2018.01.094

A new model for a drying droplet

Sergei Sazhin, Oyuna Rybdylova, Ananth Pannala, S. Somavarapu, Shamil Zaripov

Research output: Contribution to journal › Article › peer-review

Abstract

A new model for droplet drying is suggested. This model is based on theanalytical solutions to the heat transfer and species di usion equations insidespherical droplets. Small solid particles dispersed in an ambient evaporatingliquid, or a non-evaporating substance dissolved in this liquid, are treatedas non-evaporating components. Three key sub-processes are involved in theprocess of droplet drying within the new model: droplet heating/cooling, diffusionof the components inside the droplets, and evaporation of the volatilecomponent. The model is used to analyse the drying of a spray consistingof chitosan dissolved in water. After completion of the evaporation process,the size of the residual solid ball predicted by the model is consistent withthose observed experimentally.

Original language	English
Pages (from-to)	451-458
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	122
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2018.01.094
Publication status	Published - 8 Feb 2018

Bibliographical note

Keywords

Droplets
heating
evaporation
drying
chitosan
water

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10.1016/j.ijheatmasstransfer.2018.01.094Licence: Unspecified

Sazhin et al IJHMT 2018 Accepted Version.pdfAccepted author manuscript, 750 KBLicence: CC BY-NC-ND

Oyuna Rybdylova
- O.Rybdylovabrighton.acuk
- School of Arch, Tech and Eng - Principal Lecturer
- Centre for Precision Health and Translational Medicine
- Advanced Engineering Centre
Person: Academic
Sergei Sazhin
- S.Sazhinbrighton.acuk
- School of Arch, Tech and Eng - Professor of Thermal Physics
- Centre for Precision Health and Translational Medicine
- Advanced Engineering Centre
Person: Academic

Cite this

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title = "A new model for a drying droplet",

abstract = "A new model for droplet drying is suggested. This model is based on theanalytical solutions to the heat transfer and species di usion equations insidespherical droplets. Small solid particles dispersed in an ambient evaporatingliquid, or a non-evaporating substance dissolved in this liquid, are treatedas non-evaporating components. Three key sub-processes are involved in theprocess of droplet drying within the new model: droplet heating/cooling, diffusionof the components inside the droplets, and evaporation of the volatilecomponent. The model is used to analyse the drying of a spray consistingof chitosan dissolved in water. After completion of the evaporation process,the size of the residual solid ball predicted by the model is consistent withthose observed experimentally.",

keywords = "Droplets, heating, evaporation, drying, chitosan, water",

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T1 - A new model for a drying droplet

AU - Sazhin, Sergei

AU - Rybdylova, Oyuna

AU - Pannala, Ananth

AU - Somavarapu, S.

AU - Zaripov, Shamil

PY - 2018/2/8

Y1 - 2018/2/8

N2 - A new model for droplet drying is suggested. This model is based on theanalytical solutions to the heat transfer and species di usion equations insidespherical droplets. Small solid particles dispersed in an ambient evaporatingliquid, or a non-evaporating substance dissolved in this liquid, are treatedas non-evaporating components. Three key sub-processes are involved in theprocess of droplet drying within the new model: droplet heating/cooling, diffusionof the components inside the droplets, and evaporation of the volatilecomponent. The model is used to analyse the drying of a spray consistingof chitosan dissolved in water. After completion of the evaporation process,the size of the residual solid ball predicted by the model is consistent withthose observed experimentally.

AB - A new model for droplet drying is suggested. This model is based on theanalytical solutions to the heat transfer and species di usion equations insidespherical droplets. Small solid particles dispersed in an ambient evaporatingliquid, or a non-evaporating substance dissolved in this liquid, are treatedas non-evaporating components. Three key sub-processes are involved in theprocess of droplet drying within the new model: droplet heating/cooling, diffusionof the components inside the droplets, and evaporation of the volatilecomponent. The model is used to analyse the drying of a spray consistingof chitosan dissolved in water. After completion of the evaporation process,the size of the residual solid ball predicted by the model is consistent withthose observed experimentally.

KW - Droplets

KW - heating

KW - evaporation

KW - drying

KW - chitosan

KW - water

U2 - 10.1016/j.ijheatmasstransfer.2018.01.094

DO - 10.1016/j.ijheatmasstransfer.2018.01.094

M3 - Article

SN - 0017-9310

VL - 122

SP - 451

EP - 458

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

A new model for a drying droplet

Abstract

Bibliographical note

Keywords

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Profiles

Oyuna Rybdylova

Sergei Sazhin

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