Research on Claw Motion Characteristics and Cavitation Bubbles of Snapping Shrimp

Figure 4

(a) The contour of jet velocity. The core velocity is much higher than the surroundings, forming a submerged jet in water. (b) The contour of vortex. Vortices are formed around the orifice of the nozzle, causing the pressure drop. (c) The contour of vapor. At the position of the vortex, cavitation incepts and the initial shape is toroidal. (d) The cavitation bubble in the socket cavity due to inertia. (e) Vortex core regions are indicated in grey. It gradually develops into a ring structure close to the dactyl. (f) The development of the cavitation bubble. The bubble is formed first at the nozzle orifice, and then changes from a toroidal bubble to a more conical one. (g) The pictures of cavitation bubbles generated by snapper claw.

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