Abstract
By studying the impact of human respiratory droplets aerosol particles on indoor air quality, the wall attached jet model was established in the optimization of ventilation mode. The conclusions showed the trajectory and concentration distribution in the condition of with wall attached jet and without wall attached jet. The results indicated that particle concentration can be quickly reduced in the 30 seconds to the aerosol particles for particle size of 1 micron, under the effect wall attached jet. To the aerosol particles for particle size of 10 microns and 100 microns, due to the influence of Brownian motion, aerosol particles concentration increased first and then decreased. The whole process needs a long time. In conclusion, wall attached jet can effectively weaken the small diameter of aerosol particles, instead of large diameter of aerosol particles. To the lager diameter of aerosol particles, it assists to other methods to improve indoor air quality.
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