Abstract
This paper studies a new type of homogeneous(HOM)-heterogeneous(HET) reactions in Al2O3-water-based nanofluid flowing through porous media over a stretching plate. Prior investigators have focused mainly on the catalytic effects on the plate, we model the influence of heterogeneous catalysis in porous media on these reactions. The HET reactions on the surfaces of porous media and plate are both governed by the first-order kinetics, while the HOM reaction in the fluid is given by the isothermal cubic autocatalytic kinetics. In addition, the thermal conductivity of four distinct shapes of nanoparticle, sphere, brick, cylinder, and platelet, is taken into consideration with the Hamilton-Crosser model. The obtained nonlinear differential systems simplified by using similarity transformations are numerically calculated by the bvp4c algorithm. Results demonstrate that the increase of interfacial area of porous media enhances the rate of surface-catalyzed reaction and therefore porous media can greatly shorten the chemical reaction time. Moreover, we find that platelet nanoparticles exhibit the highest convective heat transfer capacity.
| Original language | English |
|---|---|
| Article number | 104434 |
| Number of pages | 7 |
| Journal | International Communications in Heat and Mass Transfer |
| Volume | 110 |
| Early online date | 30 Nov 2019 |
| DOIs | |
| Publication status | Published - Jan 2020 |
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Keywords
- Nanofluid
- Particle shape
- Porous media
- Surface-catalyzed reaction
Cite this
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Effects of heterogeneous catalysis in porous media on nanofluid-based reactions. / Liu, Chunyan; Pan, Mingyang; Zheng, Liancun; Lin, Ping.
In: International Communications in Heat and Mass Transfer, Vol. 110, 104434, 01.2020.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effects of heterogeneous catalysis in porous media on nanofluid-based reactions
AU - Liu, Chunyan
AU - Pan, Mingyang
AU - Zheng, Liancun
AU - Lin, Ping
N1 - The work of the authors is supported by the National Natural Science Foundations of China (Nos. 11772046, 81870345, 11771040, 11861131004).
PY - 2020/1
Y1 - 2020/1
N2 - This paper studies a new type of homogeneous(HOM)-heterogeneous(HET) reactions in Al2O3-water-based nanofluid flowing through porous media over a stretching plate. Prior investigators have focused mainly on the catalytic effects on the plate, we model the influence of heterogeneous catalysis in porous media on these reactions. The HET reactions on the surfaces of porous media and plate are both governed by the first-order kinetics, while the HOM reaction in the fluid is given by the isothermal cubic autocatalytic kinetics. In addition, the thermal conductivity of four distinct shapes of nanoparticle, sphere, brick, cylinder, and platelet, is taken into consideration with the Hamilton-Crosser model. The obtained nonlinear differential systems simplified by using similarity transformations are numerically calculated by the bvp4c algorithm. Results demonstrate that the increase of interfacial area of porous media enhances the rate of surface-catalyzed reaction and therefore porous media can greatly shorten the chemical reaction time. Moreover, we find that platelet nanoparticles exhibit the highest convective heat transfer capacity.
AB - This paper studies a new type of homogeneous(HOM)-heterogeneous(HET) reactions in Al2O3-water-based nanofluid flowing through porous media over a stretching plate. Prior investigators have focused mainly on the catalytic effects on the plate, we model the influence of heterogeneous catalysis in porous media on these reactions. The HET reactions on the surfaces of porous media and plate are both governed by the first-order kinetics, while the HOM reaction in the fluid is given by the isothermal cubic autocatalytic kinetics. In addition, the thermal conductivity of four distinct shapes of nanoparticle, sphere, brick, cylinder, and platelet, is taken into consideration with the Hamilton-Crosser model. The obtained nonlinear differential systems simplified by using similarity transformations are numerically calculated by the bvp4c algorithm. Results demonstrate that the increase of interfacial area of porous media enhances the rate of surface-catalyzed reaction and therefore porous media can greatly shorten the chemical reaction time. Moreover, we find that platelet nanoparticles exhibit the highest convective heat transfer capacity.
KW - Nanofluid
KW - Particle shape
KW - Porous media
KW - Surface-catalyzed reaction
UR - http://www.scopus.com/inward/record.url?scp=85075710789&partnerID=8YFLogxK
U2 - 10.1016/j.icheatmasstransfer.2019.104434
DO - 10.1016/j.icheatmasstransfer.2019.104434
M3 - Article
AN - SCOPUS:85075710789
VL - 110
M1 - 104434
ER -