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
SN - 0045-7930
VL - 178
SP - 132
EP - 140
JO - Computers & Fluids
JF - Computers & Fluids
ER -