The deposition of monodisperse particles (1.0-26.0 mum diameter) in an idealized mouth-throat geometry has been studied numerically. The continuous phase flow is solved using a RANS (Reynolds averaged Navier-Stokes) turbulence model at inhalation flow rates of 90.0 and 30.0 1/min. The particulate phase is simulated using a random-walk/Lagrangian stochastic eddy-interaction model (EIM). Without near-wall corrections in the EIM, poor agreement is seen with experimental data on deposition. However, when a new near-wall correction in the EIM is implemented, the particle deposition results in the idealized mouth-throat geometry are in relatively good agreement when compared with measured data obtained in separate experiments. (C) 2003 Elsevier Ltd. All rights reserved.