Turbophoresis

Turbophoresis is the tendency for particles to migrate in the direction of decreasing turbulence level. The principle tends to segregate particles entrained in high velocity gases axially toward the wall region.

Dasgupta et al., (1997) demonstrated that the non-uniform cross-sectional particle distribution observed during high-velocity flow of gas-particle mixtures through a vertical duct is indeed driven by turbophoresis.

References

Ind. Eng. Chem. Res., 36 (8), 3375 -3390, 1997.