Method for determining penetration efficiency of aerosol in geometric unknown micro-scale rectangular groove

A method for determining the penetration efficiency of aerosol in a geometric unknown micro-scale rectangular groove comprises the following steps: obtaining the flow characteristic size of the rectangular groove, namely the flow characteristic height of the micro-scale rectangular groove, by using a linear regression method according to the corresponding relationship between the square difference of inlet and outlet pressures of the rectangular groove and the leakage flow; obtaining a transition Reynolds value of the micro-scale rectangular groove based on a slope deviation judgment method; and then domination analysis of gravity settling, Brown diffusion and turbulent deposition is carried out according to the particle parameters of aerosol penetration and the carrier gas flow state, and the total penetration efficiency of the aerosol in the micro-scale rectangular groove is obtained through estimation. The method is suitable for estimating the aerosol penetration share in the micro-channel with the unknown