التفاصيل البيبلوغرافية
| العنوان: |
Homogenized color-gradient lattice Boltzmann model for immiscible two-phase flow in multiscale porous media. |
| المؤلفون: |
Liu, Yang, Feng, Jingsen, Min, Jingchun, Zhang, Xuan |
| المصدر: |
Journal of Applied Physics; 5/14/2024, Vol. 135 Issue 18, p1-17, 17p |
| مصطلحات موضوعية: |
POROUS materials, STOKES flow, DRAG force, SURFACE forces, SEEPAGE, TWO-phase flow, LATTICE Boltzmann methods, COMPOSITE structures |
| مستخلص: |
In this paper, a homogenized multiphase lattice Boltzmann (LB) model is established for parallelly simulating immiscible two-phase flow in both solid-free regions (pore scale) and porous areas (continuum scale). It combines the color-gradient multiphase model with the Darcy–Brinkman–Stokes method by adding a term that includes surface force and drag force of porous matrix to multiple-relaxation-time LB equation in moment space. Moreover, an improved algorithm is proposed to characterize and implement the apparent wettability in the locally homogenized porosity field. Validations and test cases are given to demonstrate the accuracy and robustness of this new model, as well as its applicability for trans-scale fluid simulation of transport and sorption behavior from porous (Darcy flow) area to free (Stokes flow) area. For practicality, the two-phase seepage flow in a composite rock structure with multiscale pores is simulated by this new model, and the effects of viscosity ratio and wettability on the displacement process are discussed. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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