Abstract: We proposed a new lattice Boltzmann model for the small disturbance subsonicpotential flows. Using ChapmanEnskog expansion and multiscale technique, we obtained a series of lattice Boltzmann equations and the equilibrium disturbance functions that satisfied with the small disturbance subsonic linear flows equation. The numerical simulation agreed with the classical result well.

Key words: lattice Boltzmann model, multiscale method, subsonic flow, small disturbance, potential function 