ABSTRACT
Particle deposition is a phenomenon in which particles, suspended in a fluid, are transported to a wall and make permanent or temporary contact with the surface of the wall. Particle deposition is an important phenomenon in many fields: the fouling of channel walls exposed to dusty gas, microcontamination problems in advanced material processing, the dry deposition of particulate matter in an atmospheric environment, the development of gas filtration devices, the designed deposition of particles for the fabrication of functional devices, and so forth. Particle reentrainment means resuspension of deposited particles. In general, small primary particles are hard to reentrain from a wall; however, aggregate particles are readily reentrained from a particle deposition layer. The aggregate reentrainment affects various engineering applications, such as powder dispersion, particles size classification, dust collection, particle synthesis, and aerosol sampling.
