These are inertia, Brownian diffusion, thermophoresis, diffusiophoresis
, Magnus effect, fluid drainage, and gravity settling.
From these studies, diffusion, diffusiophoresis
, impaction, and thermophoresis were put forward as important mechanisms for lacquer formation on EGR coolers and valves, summarized by Hornig et al.
Dry deposition occurs with several mechanisms like turbulent diffusion, sedimentation, Brownian diffusion, interception, inertial forces, electrical migration, thermophoresis, and diffusiophoresis
He considers seven slip mechanisms, including inertia, Brownian diffusion, thermophoresis, diffusiophoresis
, Magnus, fluid drainage, and gravity, and claimed that, of these seven, only Brownian diffusion and thermophoresis are important slip mechanisms in nanofluids.