Note on the experimental measurement of particles embedded in one and two in-line tubes in a high speed gas stream

• Published in: Wear Vol. 126; no. 2; pp. 211 - 218
• Main Authors: Schweitzer, M.O., Humphrey, J.A.C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.1988
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/0043-1648(88)90139-1

Solid particle deposition on one and two in-line tubes has been measured. Experiments were conducted in a vertical duct containing the tube(s) oriented perpendicular to the mean flow. Dilute particle concentrations corresponding to 40 or 97 μm glass beads, at mass loading ratios less than 0.007, were investigated. Air approaching the tube(s) at 18.5 m s −1 and 1.4% turbulence intensity was used as the carrier fluid. Various differences observed in the circumferential depositions for the two bead sizes are attributed to the fivefold difference between their respective inertia numbers. In the case of two in-line tubes, the wake of the first substantially alters the deposition characteristics of the second. Some photographic evidence of this effect was obtained.