Abstract
We present an analytical approach, as well as computer simulations based on the free surface lattice-Boltzmann (FSLB) method, in order to model capillary-driven infiltration of liquids into porous structures. The analytical method is an extension of the Lucas-Washburn (LW) equation and applies to axisymmetric geometries with a circular cross-section. The treatment of irregular capillaries is achieved by a discretization procedure in which the original geometry is divided into small cylinders. In order to validate the derived analytical equation, we perform FSLB simulations in test geometries which show a good agreement.
| Original language | English |
|---|---|
| Pages (from-to) | 132-140 |
| Number of pages | 9 |
| Journal | Computers & Fluids |
| Volume | 178 |
| DOIs | |
| Publication status | Published - 15 Jan 2019 |
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Keywords
- Capillary-driven infiltration
- Free-surface lattice-Boltzmann (FSLB)
- Spontaneous imbibition
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Modeling of capillary-driven flows in axisymmetric geometries. / Chassagne, Romain (Corresponding author); Dörfler, Fabian; Guyenot, Michael; Harting, Jens.
In: Computers & Fluids, Vol. 178, 15.01.2019, p. 132-140.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Modeling of capillary-driven flows in axisymmetric geometries
AU - Chassagne, Romain
AU - Dörfler, Fabian
AU - Guyenot, Michael
AU - Harting, Jens
PY - 2019/1/15
Y1 - 2019/1/15
N2 - We present an analytical approach, as well as computer simulations based on the free surface lattice-Boltzmann (FSLB) method, in order to model capillary-driven infiltration of liquids into porous structures. The analytical method is an extension of the Lucas-Washburn (LW) equation and applies to axisymmetric geometries with a circular cross-section. The treatment of irregular capillaries is achieved by a discretization procedure in which the original geometry is divided into small cylinders. In order to validate the derived analytical equation, we perform FSLB simulations in test geometries which show a good agreement.
AB - We present an analytical approach, as well as computer simulations based on the free surface lattice-Boltzmann (FSLB) method, in order to model capillary-driven infiltration of liquids into porous structures. The analytical method is an extension of the Lucas-Washburn (LW) equation and applies to axisymmetric geometries with a circular cross-section. The treatment of irregular capillaries is achieved by a discretization procedure in which the original geometry is divided into small cylinders. In order to validate the derived analytical equation, we perform FSLB simulations in test geometries which show a good agreement.
KW - Capillary-driven infiltration
KW - Free-surface lattice-Boltzmann (FSLB)
KW - Spontaneous imbibition
UR - http://www.scopus.com/inward/record.url?scp=85056256937&partnerID=8YFLogxK
U2 - 10.1016/j.compfluid.2018.08.024
DO - 10.1016/j.compfluid.2018.08.024
M3 - Article
AN - SCOPUS:85056256937
VL - 178
SP - 132
EP - 140
JO - Computers & Fluids
JF - Computers & Fluids
SN - 0045-7930
ER -