TY - JOUR
T1 - Haines jumps: Pore scale mechanisms
AU - Sun, Zhonghao
AU - Santamarina, Carlos
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Support for this research was provided by King Abdullah University of Science and Technology
PY - 2019/8/27
Y1 - 2019/8/27
N2 - Haines instabilities are sudden jumps of the fluid interface accompanied by fluid redistribution and a transient pressure response. Haines jumps affect global displacement patterns in porous media, promote fingered invasion, increase fluid trapping, and contribute to hysteretic saturation. Detailed analyses and experimental results show that jumps take place when the pressure-volume response is multivalued across the pore throat, during either advancing or receding tests. This situation emerges in "soft systems" such as liquids with entrapped gas bubbles, compliant substrates, and when multiple menisci interact across the porous networks. Elastic deformations and capillarity combine to form the dimensionless elastocapillary number Nec for a given pore geometry and fluid mixture: a system with elastocapillary number Nec
AB - Haines instabilities are sudden jumps of the fluid interface accompanied by fluid redistribution and a transient pressure response. Haines jumps affect global displacement patterns in porous media, promote fingered invasion, increase fluid trapping, and contribute to hysteretic saturation. Detailed analyses and experimental results show that jumps take place when the pressure-volume response is multivalued across the pore throat, during either advancing or receding tests. This situation emerges in "soft systems" such as liquids with entrapped gas bubbles, compliant substrates, and when multiple menisci interact across the porous networks. Elastic deformations and capillarity combine to form the dimensionless elastocapillary number Nec for a given pore geometry and fluid mixture: a system with elastocapillary number Nec
UR - http://hdl.handle.net/10754/658597
UR - https://link.aps.org/doi/10.1103/PhysRevE.100.023115
UR - http://www.scopus.com/inward/record.url?scp=85072126121&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.100.023115
DO - 10.1103/PhysRevE.100.023115
M3 - Article
C2 - 31574718
SN - 2470-0045
VL - 100
JO - Physical Review E
JF - Physical Review E
IS - 2
ER -