Collision limited reaction rates for arbitrarily shaped particles across the entire diffusive Knudsen number range.

摘要: Aerosol particle reactions with vapor molecules and molecular clusters are often collision rate limited, hence determination of particle-vapor molecule particle-molecular cluster rates fundamental importance. These collisions typically occur in the mass transfer transition regime, wherein kernel (collision coefficient) is dependent upon diffusive Knudsen number, KnD. While this alone prohibits analytical kernel, aerosol particle- further complicated when particles non-spherical, as case for formed high temperature processes (combustion). Recently, through a combination mean first passage time simulations dimensional analysis, it was shown that spherical could be expressed dimensionless H, which solely function In work, similar times redefi...