Deposition of Oil Mist from Horizontal Turbulent Pipe Flow in the Presence of Liquid Film Flow

摘要

Experimental approaches were made to investigate the deposition of oil mist from horizontal turbulent pipe flow in the presence of liquid film flow. 1-Dodecane mist having mass median diameter of 1.7 #mu#m, with geometric standard deviation 1.35, are usedin air flows which Reynolds numbers are controlled at selected values between 3700 and 8300. Measurements are made for the deposition flux, pressure drop and liquid film velocity at gas-liquid interface. The observed deposition velocities are affected by concentrations of oil mist, friction velocities and velocities of liquid film. The observed data for deposition velocity are compared with the previous results for the deposition of aerosol particles in horizontal and vertical turbulent pipe flows, and shows a lager value compared to the previous ones. A new correlation is proposed for the deposition velocity of oil mist from horizontal turbulent pipe flow in the presence of liquid film flow.