With lattice Boltzmann method, thermal miscible displacement process in porous media was investigated numerically in pore scale. Influence of thermal viscous diffusion coefficient (βT) and Lewis number (Le) on interface shape and sweep efficiency are quantitatively analyzed. It shows that with the increase of βT, the instability of interface increases and the sweep efficiency decreases. As βT>0, with increase of Le, interface instability decreases; Interface between displacement fluid and displaced fluid tends to be flat; Fingertip residual rate decreases and sweep efficiency increases. As βT<0, effects of Le on sweep efficiency are opposite.
|Translated title of the contribution||Lattice Boltzmann Study on Displacement Process of Thermal Miscible Fluids in Porous Media|
|Original language||Chinese (Traditional)|
|Number of pages||11|
|Journal||Jisuan Wuli/Chinese Journal of Computational Physics|
|State||Published - Nov 25 2019|
Bibliographical notePublisher Copyright:
© 2019, Editorial Board of Chinese Journal of Computational. All right reserved.
- Fluid displacement
- Lattice Boltzmann method
- Pore scale
- Sweep efficiency
ASJC Scopus subject areas
- Modeling and Simulation
- Physics and Astronomy(all)
- Applied Mathematics