For application of lattice Bohzmann method (LBM) in aeroacoustics field, four fundamental acoustic cases are simulated. Sound waves propagating with planar source and single point source are used to investigate reliability of LBM in aeroacoustics. Capability for reflecting waves is then investigated with diffraction and interference. Doppler effect is simulated to illustrate coupled acoustics and flows. In all cases, simulated acoustics is found in good agreement with analytic solutions. It shows that LBM has good performance in computational aeroacoustics field.

Direct numerical simulations of binary electrolyte in an electrode channel with turbulent mass transfer are performed under limiting current condition and galvanostatic current conditions. Behaviors of turbulent concentration diffusion from electrodes to adjacent electrolyte in a wide range of Schmidt numbers are examined and mechanism of turbulent mass transfer in electrolytic processes is analyzed. A physical model for turbulent electrodes channel flow is established with electrochemistry theories as well as fluid dynamics. Effect of Schmidt numbers on turbulent mass transport, mean and fluctuating concentrations, mass transfer coefficient, Sherwood numbers, and instantaneous structures of concentration fields are exhibited and analyzed. It shows that mass transfer at electrodes in turbulent electrolyte is sensitive to current conditions.