On feasibility of direct numerical simulation of channel flow based on LBM (lattice boltzmann method)

Aim: The introduction of the full paper reviews Refs. 1, 2 and 3 and then proposes exploring the feasibility of direct numerical simulation; the answer, we believe, is affirmative according to our presentation in sections 1, 2 and 3. Their core is that the numerical simulation results of the boundary layer velocity profile, the mean square root velocity, the Reynolds stress profile and the energy spectrum in the central channel zone display satisfactory agreements respectively with the Kim, Moin and Moser's classical results in Ref. 5; their corresponding figures are: Fig. 4 (the boundary layer velocity profile), Fig. 5 (the mean square root velocity), Fig. 6 (the Reynolds stress profile) and Fig. 7 (the energy spectrum in the central channel zone). The agreements indicate preliminarily that the LBM can indeed predict the evolution of boundary layer and the effect of wind tunnel wall on flow, thus demonstrating that the LBM can be applied to the correction of wind tunnel wall interference.