Boundary scheme for lattice Boltzmann modeling of micro-scale gas flow in organic-rich pores considering surface diffusion<xref rid="cpb_28_3_030202fn1" ref-type="fn">*</xref><fn id="cpb_28_3_030202fn1"><label>*</label><p>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).</p></fn>

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 Hong^{1, 2}, Deng Shou-Chun^{1, †}, Li Hai-Bo¹

Velocity vectors of micro-gaseous flow in tree-like model under different surface diffusivity values: (a) D_s = 10^–5 m²/s, (b) D_s = 10^–6 m²/s, and (c) D_s = 10^–8 m²/s, and (d) flows in the continuum regime with no-slip boundary. Other parameters are ∇ p = 0.1 MPa/m, p_out = 10 MPa, q_sat = 4000 mol/m³, b = 0.125 MPa^–1, height = 75 nm, and length = 75 nm.