Shortening Experiments

To test the importance of the overall shape and the length on drag and reconfiguration, shortening experiments were conducted. Two individuals of an intermediate morphology were tested at a velocity of 2.0 m s-1. The blades had initial lengths of LIV = 4.25 m (specimen IV; Table 3.1) and LVIII = 3.80 m (specimen VII; Table 3.1) and were then both shortened twice by cutting off 1 m from the distal end and tested again. By cutting of the ends of the blades, the stream-optimized shapes of the kelp were disturbed. The resulting flow-induced forces on the kelp can be expected to reflect the changes in size but also in shape.

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