In this work, a passive scalar multi-component LB model, as developed by , employing the D3Q27 lattice (three dimensions with twenty-seven discrete velocities) within a Bhatnagar-Gross-Krook (BGK) framework and an isothermal guided equilibrium approach is implemented. Macroscopic quantities such as density 𝜌 and velocity 𝑣 can be obtained by summing up the discrete populations 𝑓 and discrete velocities 𝑐 in the direction 𝛼 = 𝑥, 𝑦, 𝑧: