TY - JOUR
T1 - Drying of porous materials at pore scale using lattice Boltzmann and pore network models
AU - Zhao, Jianlin
AU - Qin, Feifei
AU - Derome, Dominique
AU - Carmeliet, Jan
N1 - Publisher Copyright:
© 2021 Institute of Physics Publishing. All rights reserved.
PY - 2021/12/2
Y1 - 2021/12/2
N2 - Drying at macroscale shows a first drying period with constant drying rate followed by second drying period showing a receding moisture front, phenomena that can be tailored upon need. In order to study the drying of materials, we present a new hybrid computational method, where the dynamics of the liquid-vapor interfaces is modelled by lattice Boltzmann modelling (LBM) in the two-phase pores, while the single-phase flow in the pores filled solely by vapor or liquid is solved by pore network model (PNM). This hybrid method is validated by comparison with reference full LBM simulations. The hybrid method combines the advantages of both methods, i.e., accuracy and computational efficiency. LBM and the hybrid LBM-PNM method are used to study the drying of porous media at pore scale. We analyse two different pore structures and consider how capillary pumping effect can maximize the drying rate. Finally, we indicate how optimized drying rates are relevant when designing facade or pavement solutions that can mitigate higher surface temperatures in urban environments by evaporative cooling.
AB - Drying at macroscale shows a first drying period with constant drying rate followed by second drying period showing a receding moisture front, phenomena that can be tailored upon need. In order to study the drying of materials, we present a new hybrid computational method, where the dynamics of the liquid-vapor interfaces is modelled by lattice Boltzmann modelling (LBM) in the two-phase pores, while the single-phase flow in the pores filled solely by vapor or liquid is solved by pore network model (PNM). This hybrid method is validated by comparison with reference full LBM simulations. The hybrid method combines the advantages of both methods, i.e., accuracy and computational efficiency. LBM and the hybrid LBM-PNM method are used to study the drying of porous media at pore scale. We analyse two different pore structures and consider how capillary pumping effect can maximize the drying rate. Finally, we indicate how optimized drying rates are relevant when designing facade or pavement solutions that can mitigate higher surface temperatures in urban environments by evaporative cooling.
UR - http://www.scopus.com/inward/record.url?scp=85121430162&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2069/1/012001
DO - 10.1088/1742-6596/2069/1/012001
M3 - 会议文章
AN - SCOPUS:85121430162
SN - 1742-6588
VL - 2069
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012001
T2 - 8th International Building Physics Conference, IBPC 2021
Y2 - 25 August 2021 through 27 August 2021
ER -