Abstract
This study describes immiscible fluid displacement near a transitional boundary at which inertial effect occurs. We simulated two-phase fluid flow in a 2D micromodel using the lattice Boltzmann method with varying Reynolds numbers (Re) (log Re = −2 to 2) and viscosity ratios (M) (log M = −2 to 0). To highlight the role of inertial force rather than capillary and viscous forces, the capillary number (Ca) was kept constant at log Ca = −5. As Re and M increased, development in the preferential flow became more pronounced with tortuous paths. We found the transitional boundary exists near log Re = −1 to 1 at which residual saturation of the displaced fluid starts to fluctuate and changes 5%–14% in the transitional regime. In particular, this boundary describes the effect of inertia on immiscible fluid displacement before an increase in the work done due to inertial force occurs.
| Original language | English |
|---|---|
| Article number | 123934 |
| Journal | Journal of Hydrology |
| Volume | 577 |
| DOIs | |
| Publication status | Published - 2019 Oct |
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All Science Journal Classification (ASJC) codes
- Water Science and Technology
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Transitional non-Darcy displacement of immiscible fluids due to inertial effect. / Kang, Dong Hun; Yun, Tae Sup.
In: Journal of Hydrology, Vol. 577, 123934, 10.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Transitional non-Darcy displacement of immiscible fluids due to inertial effect
AU - Kang, Dong Hun
AU - Yun, Tae Sup
PY - 2019/10
Y1 - 2019/10
N2 - This study describes immiscible fluid displacement near a transitional boundary at which inertial effect occurs. We simulated two-phase fluid flow in a 2D micromodel using the lattice Boltzmann method with varying Reynolds numbers (Re) (log Re = −2 to 2) and viscosity ratios (M) (log M = −2 to 0). To highlight the role of inertial force rather than capillary and viscous forces, the capillary number (Ca) was kept constant at log Ca = −5. As Re and M increased, development in the preferential flow became more pronounced with tortuous paths. We found the transitional boundary exists near log Re = −1 to 1 at which residual saturation of the displaced fluid starts to fluctuate and changes 5%–14% in the transitional regime. In particular, this boundary describes the effect of inertia on immiscible fluid displacement before an increase in the work done due to inertial force occurs.
AB - This study describes immiscible fluid displacement near a transitional boundary at which inertial effect occurs. We simulated two-phase fluid flow in a 2D micromodel using the lattice Boltzmann method with varying Reynolds numbers (Re) (log Re = −2 to 2) and viscosity ratios (M) (log M = −2 to 0). To highlight the role of inertial force rather than capillary and viscous forces, the capillary number (Ca) was kept constant at log Ca = −5. As Re and M increased, development in the preferential flow became more pronounced with tortuous paths. We found the transitional boundary exists near log Re = −1 to 1 at which residual saturation of the displaced fluid starts to fluctuate and changes 5%–14% in the transitional regime. In particular, this boundary describes the effect of inertia on immiscible fluid displacement before an increase in the work done due to inertial force occurs.
UR - http://www.scopus.com/inward/record.url?scp=85068614637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068614637&partnerID=8YFLogxK
U2 - 10.1016/j.jhydrol.2019.123934
DO - 10.1016/j.jhydrol.2019.123934
M3 - Article
AN - SCOPUS:85068614637
VL - 577
JO - Journal of Hydrology
JF - Journal of Hydrology
SN - 0022-1694
M1 - 123934
ER -