| 摘要 |
A cavity system that tends to increase the thickness (28) of the shear layer (22), comprising: a cavity 2 and a plurality of rods 4 extending away from the cavity base 3 to a height extending beyond the leading edge 14. The rods are positioned downstream of, and in the proximity of, the leading edge. The rods may extend to different heights and/or be positioned longitudinally offset from each other (e.g. in a zig-zag pattern). The rods may be reversibly movable to a configuration in which they are fully enclosed in the cavity 2 when the cavity 2 is closed. Flow alteration elements (34, 38), for example channels (34) passing through the rods (4) and/or protrusions (38) extending from the rod (4) may be provided on the rods (4). At least a portion of one or more rods may slant in the flow direction 6 of an ambient fluid. The cavity system may be utilised for cavities recessed in a surface of a vehicle such as an aircraft bay. |
