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. B. Fig, Two-dimensionnal LES modelling of a channel contained within a cavity at time (a) t=9.6 s and (b) at t=314.5 s. (Credit P.Brady and J.Reizes) Observations on the external velocity disturbances on the flow behaviour

. B. Fig, 3 Development of the large convective structures within the room and tracking of the effect of one of them. The white ellipse indicates one of this large convective structures entrained in the channel and its effect on the flow behaviour. The dotted line ellipse shows another external convective structures which is being entrained in the channel