Influense of Oscillations on Coagulation and Sedimentation of Aerosols in Tubes

Abstract eng:
Experimental investigations of oscillations of an aerosol were carried out for tubes with various geometry on end in shock-wave and shock-free modes near resonance frequencies. Numerical concentration of aerosol droplets monotonously decreases with time. With increase of intensity of oscillations, these times decrease. The dependence of the time scale of sedimentation of aerosol in closed tube and time scale of clearing of aerosol in an open tube on the excitation frequency likewise exhibits a nonmonotonic pattern. It is established, that presence of a flange slows down process of the sedimentation of aerosol. Reduction of internal diameter of a flange results in increase in the time scale of sedimentation of aerosol. The time scale of sedimentation of aerosol in the closed tube is 2-4 times, time scale of clearing of aerosol in an open tube is 6-12 times and a partially open tube is 5-10 times lower than at natural depositing.

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