Abstract

As a result of superambient pressures at the gape and of subambient pressures lateral to the valves, flow-induced forces augment the action of the hinge ligament in reopening scallop shells between cycles of closing. As the gape angle increases, flow-induced forces increase while the recoil of the hinge ligament decreases. At a gape angle of 13.3° and a speed of 0.5 m · s-1, the overall hydrodynamically generated opening moment is estimated as 22.3% of that due to ligament elasticity.

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