Abstract
To elucidate the effects of particulate fouling on performance of heat exchangers, the mechanism of particle deposition onto a cylinder in turbulent gas flow was experimentally investigated by changing the flow conditions with the dust (fly ash) for industrial testing No. 5, JIS Z 8901 (1974).
Particles were apt to deposit near the stagnant point and beyond the separation points of the cylinder, and they were affected by Reynolds number and the turbulent intensity. The cumulative number-size distributions of particles were measured by a Lasor Granulometer, and deposited particles at the stagnant points were found to be coarser than those of deposited at the wake zone.
