2020
DOI: 10.1017/jfm.2020.671
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The mixing of airborne contaminants by the repeated passage of people along a corridor

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Cited by 22 publications
(19 citation statements)
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“…Enhanced longitudinal dispersion by the repeated movement along a corridor has also recently been reported (Mingotti et al. 2020).…”
Section: Peoplementioning
confidence: 66%
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“…Enhanced longitudinal dispersion by the repeated movement along a corridor has also recently been reported (Mingotti et al. 2020).…”
Section: Peoplementioning
confidence: 66%
“…Experiments on a cylinder passing through an air curtain in a doorway, show that the air curtain is strongly disrupted by the passage and a large volume is transported through the doorway (Jha, Frank & Linden 2020a;Jha et al 2020b). Enhanced longitudinal dispersion by the repeated movement along a corridor has also recently been reported (Mingotti et al 2020).…”
Section: People Movementmentioning
confidence: 72%
“…Although aerosols greater than about 10 μ m might, in some settings, settle from the space relatively rapidly and so they may be dispersed by people movement, smaller aerosols (e.g. less than 5 μ m) which can remain airborne for several tens of minutes may be much more strongly affected by such dispersal [70]. This dispersal may in fact dominate other dispersal processes if there is a sufficient frequency of people passing through a space.…”
Section: The Indoor Spread Of Covid-19 and Wintertimementioning
confidence: 99%
“…People have widths typically in the range 0.3–0.5 m, and move at speeds of 1–2 m s −1 even when walking, and this leads to a highly turbulent wake with Reynolds number of about 10 5 . The mixing associated with this wake in corridors, supermarket aisles, meeting rooms, school classrooms or other spaces with relatively high people density and movement (even with 2 m spacing) may be key for quantifying the aerosol dispersion prior to it being ventilated or settling out from the space [70]. Indeed, with ventilation timescales of 10–20 min in typical buildings, with 5–10 air changes per hour, and the settling time of small aerosols (less than 10 μ m) being of comparable duration, the aerosols may be mixed by the wakes of many people.…”
Section: The Indoor Spread Of Covid-19 and Wintertimementioning
confidence: 99%
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