Numerical simulations have been carded out to investigate the liquid atomization and spray process using theDiscrete Phase Model of the commercial CFD code combined with the Wall-Film boundary conditions. The effectso...Numerical simulations have been carded out to investigate the liquid atomization and spray process using theDiscrete Phase Model of the commercial CFD code combined with the Wall-Film boundary conditions. The effectsof spray parameters on droplets Santer mean diameter (SMD), droplet collision speed, the thickness of liquid-film,the surface temperature and its uniformity were analyzed in the present study. The simulation results andthe experimental data obtained in the available literature agree within 13.8%. The computational results show thatthe spray pressure is the main factor to realize the atomization. Increasing the mass flux and the spray pressure,the droplet collision speed increases while the corresponding maximum film thickness on the heated surface declines.The surface temperature changes indistinctively with the increase of the spray distance, but the temperaturedistribution tends to be uniform.展开更多
基金supported by National Natural Science Foundation of China (No.50776087).
文摘Numerical simulations have been carded out to investigate the liquid atomization and spray process using theDiscrete Phase Model of the commercial CFD code combined with the Wall-Film boundary conditions. The effectsof spray parameters on droplets Santer mean diameter (SMD), droplet collision speed, the thickness of liquid-film,the surface temperature and its uniformity were analyzed in the present study. The simulation results andthe experimental data obtained in the available literature agree within 13.8%. The computational results show thatthe spray pressure is the main factor to realize the atomization. Increasing the mass flux and the spray pressure,the droplet collision speed increases while the corresponding maximum film thickness on the heated surface declines.The surface temperature changes indistinctively with the increase of the spray distance, but the temperaturedistribution tends to be uniform.
