Mass transfer characteristics for CO2 absorption in nanoabsorbents

Lirong Li, Hwan Suk Lim, Yong Tae Kang

Research output: Contribution to journalArticle

Abstract

In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.

LanguageEnglish
Pages650-659
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume129
DOIs
Publication statusPublished - 2019 Feb 1

Fingerprint

mass transfer
bubbles
Mass transfer
drag
Drag
Methanol
Liquids
methyl alcohol
Gases
Nanoparticles
nanoparticles
liquids
Pressure gradient
pressure gradients
gases
Volume fraction
Momentum
liquid phases
momentum
gradients

Keywords

  • AlO nanoparticles
  • Bubble behavior visualization
  • CO absorption
  • Drag force
  • Mass transfer enhancement

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Mass transfer characteristics for CO2 absorption in nanoabsorbents. / Li, Lirong; Lim, Hwan Suk; Kang, Yong Tae.

In: International Journal of Heat and Mass Transfer, Vol. 129, 01.02.2019, p. 650-659.

Research output: Contribution to journalArticle

@article{f46c1be70bfe48479fdd048d33a90914,
title = "Mass transfer characteristics for CO2 absorption in nanoabsorbents",
abstract = "In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.",
keywords = "AlO nanoparticles, Bubble behavior visualization, CO absorption, Drag force, Mass transfer enhancement",
author = "Lirong Li and Lim, {Hwan Suk} and Kang, {Yong Tae}",
year = "2019",
month = "2",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2018.10.005",
language = "English",
volume = "129",
pages = "650--659",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Mass transfer characteristics for CO2 absorption in nanoabsorbents

AU - Li, Lirong

AU - Lim, Hwan Suk

AU - Kang, Yong Tae

PY - 2019/2/1

Y1 - 2019/2/1

N2 - In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.

AB - In this work, an improved VOF-PLIC model is developed to simulate 3D bubble behavior and to analyze the mass transfer characteristics for CO2 absorption in pure methanol and methanol with Al2O3 nanoparticles. The lower bound boundary value of CO2 volume fraction(αg) is redefined according to the influence of αg on bubble shape and diameter as well as the interfacial area between gas and liquid. In addition, a reasonable drag force is added into the momentum equation using UDF code based on the assumption that the drag force only exists in liquid phase. It is found that the level lines of bubbles with the αg value of 0.05 agree well with the real case, and the drag force has significant influence on the bubble behavior and mass transfer characteristics. The velocity contours and pressure gradients around the bubble are proposed to analyze the influence of drag force on the mass transfer characteristics. Also, the influence of the Al2O3 nanoparticles on the mass transfer enhancement is studied, and the results show that the dispersed particles can significantly enhance the mass transfer by increasing the gas–liquid interfacial surface renewal frequency.

KW - AlO nanoparticles

KW - Bubble behavior visualization

KW - CO absorption

KW - Drag force

KW - Mass transfer enhancement

UR - http://www.scopus.com/inward/record.url?scp=85054431458&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054431458&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2018.10.005

DO - 10.1016/j.ijheatmasstransfer.2018.10.005

M3 - Article

VL - 129

SP - 650

EP - 659

JO - International Journal of Heat and Mass Transfer

T2 - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -