Boundary scheme for lattice Boltzmann modeling of micro-scale gas flow in organic-rich pores considering surface diffusion*

Project supported by the Strategic Program of Chinese Academy of Sciences (Grant No. XDB10030400), the Hundred Talent Program of Chinese Academy of Sciences (Grant No. Y323081C01), and the National Natural Science Foundation of China (Grant No. 51439008).

Zuo Hong1, 2, Deng Shou-Chun1, †, Li Hai-Bo1
       

Relationship between normalized apparent permeability and Langmuir constant b for different values of model size H and Langmuir volume qsat: qsat = 1000 mol/m3 (gray), 2000 mol/m3 (brown), 3000 mol/m3 (purple), 4000 mol/m3 (blue), 5000 mol/m3 (green), 6000 mol/m3 (red). Other parameters are ∇ p = 0.1 MPa/m, pout = 20 MPa, and Ds = 10–6 m2/s.