Particle retention in PWR ice compartments

Computer code ICEDF has been written to improve understanding of particle retention in PWR ice compartments, and to help plan experimental tests to validate retention models. ICEDF models the following mechanisms for particle capture: sedimentation, Brownian diffusion, impaction/interception, thermophoresis, diffusiophoresis, and turbulent deposition. Also modeled are detailed gas phase thermodynamics, heat transfer, and aerosol descriptions, including particle/droplet growth in supersaturated atmospheres. This paper describes a sensitivity study of parameters (inlet particle size distribution and mass loading, inlet gas temperature and steam fraction, compartment parameters, ice availability and gas flow rates) on the relative importance of the particle capture mechanisms