An experimental and numerical study of the aeolian erosion of isolated and successive piles

摘要: Open storage yards at industrial sites usually comprise several piles of granular materials, representing a particulate matter source that may significantly deteriorate air quality. The aeolian erosion stockpiles is affected by changes in airflow patterns due to the pile shape and presence nearby or buildings. aim this study was analyse impact wind successive parallel on flow behaviour particle emissions. A tunnel experiment conducted six configurations: one isolated two separated gaps 0.9h 1.8h (h height) oriented 60° 90° with respect main direction. particles had bimodal size distribution consisting sand erodible (white) non-erodible (black) investigated velocity range. contrasting colours enabled visualisation accumulation. mean field wall shear stress pathlines predicted numerical simulation were associated experimental patterns. emitted mass experimentally quantified as difference between initial final stockpile weights. Downstream large it highly eroded result from upstream pile. emissions consecutive greater than twice an for both orientations. Additionally, lower configurations which perpendicular.